feat(lists): add support for Twitter Lists

Add commands to fetch owned lists, list memberships, and list timelines:
- `bird lists` shows lists you own
- `bird lists --member-of` shows lists you're a member of
- `bird list-timeline <id-or-url>` fetches tweets from a list

Includes full --json and --json-full support for list timeline output.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

src/cli/program.ts

@@ -2,6 +2,7 @@ import { Command } from 'commander';
 import { registerBookmarksCommand } from '../commands/bookmarks.js';
 import { registerCheckCommand } from '../commands/check.js';
 import { registerHelpCommand } from '../commands/help.js';
+import { registerListsCommand } from '../commands/lists.js';
 import { registerPostCommands } from '../commands/post.js';
 import { registerQueryIdsCommand } from '../commands/query-ids.js';
 import { registerReadCommands } from '../commands/read.js';
@@ -23,6 +24,8 @@ export const KNOWN_COMMANDS = new Set([
   'following',
   'followers',
   'likes',
+  'lists',
+  'list-timeline',
   'help',
   'whoami',
   'check',
@@ -124,6 +127,7 @@ export function createProgram(ctx: CliContext): Command {
   registerReadCommands(program, ctx);
   registerSearchCommands(program, ctx);
   registerBookmarksCommand(program, ctx);
+  registerListsCommand(program, ctx);
   registerUserCommands(program, ctx);
   registerCheckCommand(program, ctx);
 

src/commands/lists.ts

@@ -0,0 +1,138 @@
+// ABOUTME: CLI command for fetching Twitter Lists.
+// ABOUTME: Supports listing owned lists, memberships, and list timelines.
+
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import type { TwitterList } from '../lib/twitter-client.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+const NUMERIC_ID_REGEX = /^\d+$/;
+const LIST_URL_REGEX = /(?:x\.com|twitter\.com)\/i\/lists\/(\d+)/i;
+
+function extractListId(listIdOrUrl: string): string | null {
+  const trimmed = listIdOrUrl.trim();
+
+  // Numeric ID
+  if (NUMERIC_ID_REGEX.test(trimmed)) {
+    return trimmed;
+  }
+
+  // URL formats:
+  // https://x.com/i/lists/1234567890123456789
+  // https://twitter.com/i/lists/1234567890123456789
+  const urlMatch = trimmed.match(LIST_URL_REGEX);
+  if (urlMatch) {
+    return urlMatch[1];
+  }
+
+  return null;
+}
+
+function printLists(lists: TwitterList[], ctx: CliContext): void {
+  if (lists.length === 0) {
+    console.log('No lists found.');
+    return;
+  }
+
+  for (const list of lists) {
+    const visibility = list.isPrivate ? '[private]' : '[public]';
+    console.log(`${list.name} ${ctx.colors.muted(visibility)}`);
+    if (list.description) {
+      console.log(`  ${list.description.slice(0, 100)}${list.description.length > 100 ? '...' : ''}`);
+    }
+    console.log(`  ${ctx.p('info')}${list.memberCount?.toLocaleString() ?? 0} members`);
+    if (list.owner) {
+      console.log(`  ${ctx.colors.muted(`Owner: @${list.owner.username}`)}`);
+    }
+    console.log(`  ${ctx.colors.accent(`https://x.com/i/lists/${list.id}`)}`);
+    console.log('──────────────────────────────────────────────────');
+  }
+}
+
+export function registerListsCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('lists')
+    .description('Get your Twitter lists')
+    .option('--member-of', 'Show lists you are a member of (instead of owned lists)')
+    .option('-n, --count <number>', 'Number of lists to fetch', '100')
+    .option('--json', 'Output as JSON')
+    .action(async (cmdOpts: { memberOf?: boolean; count?: string; json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '100', 10);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+
+      const result = cmdOpts.memberOf ? await client.getListMemberships(count) : await client.getOwnedLists(count);
+
+      if (result.success && result.lists) {
+        if (cmdOpts.json) {
+          console.log(JSON.stringify(result.lists, null, 2));
+        } else {
+          const emptyMessage = cmdOpts.memberOf ? 'You are not a member of any lists.' : 'You do not own any lists.';
+          if (result.lists.length === 0) {
+            console.log(emptyMessage);
+          } else {
+            printLists(result.lists, ctx);
+          }
+        }
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch lists: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('list-timeline <list-id-or-url>')
+    .description('Get tweets from a list timeline')
+    .option('-n, --count <number>', 'Number of tweets to fetch', '20')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(async (listIdOrUrl: string, cmdOpts: { count?: string; json?: boolean; jsonFull?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '20', 10);
+
+      const listId = extractListId(listIdOrUrl);
+      if (!listId) {
+        console.error(`${ctx.p('err')}Invalid list ID or URL. Expected numeric ID or https://x.com/i/lists/<id>.`);
+        process.exit(2);
+      }
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const result = await client.getListTimeline(listId, count, { includeRaw: cmdOpts.jsonFull });
+
+      if (result.success && result.tweets) {
+        ctx.printTweets(result.tweets, {
+          json: cmdOpts.json || cmdOpts.jsonFull,
+          emptyMessage: 'No tweets found in this list.',
+        });
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch list timeline: ${result.error}`);
+        process.exit(1);
+      }
+    });
+}

src/lib/query-ids.json

@@ -8,5 +8,9 @@
   "BookmarkFolderTimeline": "KJIQpsvxrTfRIlbaRIySHQ",
   "Following": "BEkNpEt5pNETESoqMsTEGA",
   "Followers": "kuFUYP9eV1FPoEy4N-pi7w",
-  "Likes": "JR2gceKucIKcVNB_9JkhsA"
+  "Likes": "JR2gceKucIKcVNB_9JkhsA",
+  "ListOwnerships": "wQcOSjSQ8NtgxIwvYl1lMg",
+  "ListMemberships": "BlEXXdARdSeL_0KyKHHvvg",
+  "ListLatestTweetsTimeline": "2TemLyqrMpTeAmysdbnVqw",
+  "ListByRestId": "wXzyA5vM_aVkBL9G8Vp3kw"
 }

src/lib/twitter-client-constants.ts

@@ -25,6 +25,10 @@ export const FALLBACK_QUERY_IDS = {
   Followers: 'kuFUYP9eV1FPoEy4N-pi7w',
   Likes: 'JR2gceKucIKcVNB_9JkhsA',
   BookmarkFolderTimeline: 'KJIQpsvxrTfRIlbaRIySHQ',
+  ListOwnerships: 'wQcOSjSQ8NtgxIwvYl1lMg',
+  ListMemberships: 'BlEXXdARdSeL_0KyKHHvvg',
+  ListLatestTweetsTimeline: '2TemLyqrMpTeAmysdbnVqw',
+  ListByRestId: 'wXzyA5vM_aVkBL9G8Vp3kw',
 } as const;
 
 export type OperationName = keyof typeof FALLBACK_QUERY_IDS;

src/lib/twitter-client-features.ts

@@ -170,6 +170,46 @@ export function buildLikesFeatures(): Record<string, boolean> {
   return buildTimelineFeatures();
 }
 
+export function buildListsFeatures(): Record<string, boolean> {
+  return {
+    rweb_video_screen_enabled: true,
+    profile_label_improvements_pcf_label_in_post_enabled: true,
+    responsive_web_profile_redirect_enabled: true,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    premium_content_api_read_enabled: false,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: false,
+    responsive_web_grok_analyze_post_followups_enabled: false,
+    responsive_web_grok_annotations_enabled: false,
+    responsive_web_jetfuel_frame: true,
+    responsive_web_grok_share_attachment_enabled: true,
+    articles_preview_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    responsive_web_grok_show_grok_translated_post: false,
+    responsive_web_grok_analysis_button_from_backend: true,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_grok_image_annotation_enabled: true,
+    responsive_web_grok_imagine_annotation_enabled: true,
+    responsive_web_grok_community_note_auto_translation_is_enabled: false,
+    responsive_web_enhance_cards_enabled: false,
+  };
+}
+
 export function buildFollowingFeatures(): Record<string, boolean> {
   return {
     rweb_video_screen_enabled: true,

src/lib/twitter-client-lists.ts

@@ -0,0 +1,429 @@
+// ABOUTME: Mixin for Twitter Lists GraphQL operations.
+// ABOUTME: Provides methods to fetch user's owned lists, memberships, and list timelines.
+
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildListsFeatures } from './twitter-client-features.js';
+import type { TimelineFetchOptions } from './twitter-client-timelines.js';
+import type { GraphqlTweetResult, ListsResult, SearchResult, TwitterList } from './twitter-client-types.js';
+import { parseTweetsFromInstructions } from './twitter-client-utils.js';
+
+export interface TwitterClientListMethods {
+  getOwnedLists(count?: number): Promise<ListsResult>;
+  getListMemberships(count?: number): Promise<ListsResult>;
+  getListTimeline(listId: string, count?: number, options?: TimelineFetchOptions): Promise<SearchResult>;
+}
+
+interface GraphqlListResult {
+  id_str?: string;
+  name?: string;
+  description?: string;
+  member_count?: number;
+  subscriber_count?: number;
+  mode?: string;
+  created_at?: string;
+  user_results?: {
+    result?: {
+      rest_id?: string;
+      legacy?: {
+        screen_name?: string;
+        name?: string;
+      };
+    };
+  };
+}
+
+function parseList(listResult: GraphqlListResult): TwitterList | null {
+  if (!listResult.id_str || !listResult.name) {
+    return null;
+  }
+
+  const owner = listResult.user_results?.result;
+  return {
+    id: listResult.id_str,
+    name: listResult.name,
+    description: listResult.description,
+    memberCount: listResult.member_count,
+    subscriberCount: listResult.subscriber_count,
+    isPrivate: listResult.mode === 'Private',
+    createdAt: listResult.created_at,
+    owner: owner
+      ? {
+          id: owner.rest_id ?? '',
+          username: owner.legacy?.screen_name ?? '',
+          name: owner.legacy?.name ?? '',
+        }
+      : undefined,
+  };
+}
+
+function parseListsFromInstructions(
+  instructions:
+    | Array<{
+        entries?: Array<{
+          content?: {
+            itemContent?: {
+              list?: GraphqlListResult;
+            };
+          };
+        }>;
+      }>
+    | undefined,
+): TwitterList[] {
+  const lists: TwitterList[] = [];
+  if (!instructions) {
+    return lists;
+  }
+
+  for (const instruction of instructions) {
+    if (!instruction.entries) {
+      continue;
+    }
+    for (const entry of instruction.entries) {
+      const listResult = entry.content?.itemContent?.list;
+      if (listResult) {
+        const parsed = parseList(listResult);
+        if (parsed) {
+          lists.push(parsed);
+        }
+      }
+    }
+  }
+
+  return lists;
+}
+
+export function withLists<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientListMethods> {
+  abstract class TwitterClientLists extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private async getListOwnershipsQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('ListOwnerships');
+      return Array.from(new Set([primary, 'wQcOSjSQ8NtgxIwvYl1lMg']));
+    }
+
+    private async getListMembershipsQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('ListMemberships');
+      return Array.from(new Set([primary, 'BlEXXdARdSeL_0KyKHHvvg']));
+    }
+
+    private async getListTimelineQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('ListLatestTweetsTimeline');
+      return Array.from(new Set([primary, '2TemLyqrMpTeAmysdbnVqw']));
+    }
+
+    /**
+     * Get lists owned by the authenticated user
+     */
+    async getOwnedLists(count = 100): Promise<ListsResult> {
+      const userResult = await this.getCurrentUser();
+      if (!userResult.success || !userResult.user) {
+        return { success: false, error: userResult.error ?? 'Could not determine current user' };
+      }
+
+      const variables = {
+        userId: userResult.user.id,
+        count,
+        isListMembershipShown: true,
+        isListMemberTargetUserId: userResult.user.id,
+      };
+
+      const features = buildListsFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getListOwnershipsQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/ListOwnerships?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{
+                          entries?: Array<{
+                            content?: {
+                              itemContent?: {
+                                list?: GraphqlListResult;
+                              };
+                            };
+                          }>;
+                        }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            const lists = parseListsFromInstructions(instructions);
+
+            return { success: true as const, lists, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching owned lists', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, lists: firstAttempt.lists };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, lists: secondAttempt.lists };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+
+    /**
+     * Get lists the authenticated user is a member of
+     */
+    async getListMemberships(count = 100): Promise<ListsResult> {
+      const userResult = await this.getCurrentUser();
+      if (!userResult.success || !userResult.user) {
+        return { success: false, error: userResult.error ?? 'Could not determine current user' };
+      }
+
+      const variables = {
+        userId: userResult.user.id,
+        count,
+        isListMembershipShown: true,
+        isListMemberTargetUserId: userResult.user.id,
+      };
+
+      const features = buildListsFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getListMembershipsQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/ListMemberships?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{
+                          entries?: Array<{
+                            content?: {
+                              itemContent?: {
+                                list?: GraphqlListResult;
+                              };
+                            };
+                          }>;
+                        }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            const lists = parseListsFromInstructions(instructions);
+
+            return { success: true as const, lists, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching list memberships', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, lists: firstAttempt.lists };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, lists: secondAttempt.lists };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+
+    /**
+     * Get tweets from a list timeline
+     */
+    async getListTimeline(listId: string, count = 20, options: TimelineFetchOptions = {}): Promise<SearchResult> {
+      const { includeRaw = false } = options;
+
+      const variables = {
+        listId,
+        count,
+      };
+
+      const features = buildListsFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getListTimelineQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/ListLatestTweetsTimeline?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                list?: {
+                  tweets_timeline?: {
+                    timeline?: {
+                      instructions?: Array<{
+                        entries?: Array<{
+                          content?: {
+                            itemContent?: {
+                              tweet_results?: {
+                                result?: GraphqlTweetResult;
+                              };
+                            };
+                          };
+                        }>;
+                      }>;
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.list?.tweets_timeline?.timeline?.instructions;
+            const tweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+
+            return { success: true as const, tweets, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching list timeline', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, tweets: firstAttempt.tweets };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, tweets: secondAttempt.tweets };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+  }
+
+  return TwitterClientLists;
+}

src/lib/twitter-client-types.ts

@@ -237,6 +237,27 @@ export interface TwitterClientOptions {
   quoteDepth?: number;
 }
 
+export interface TwitterList {
+  id: string;
+  name: string;
+  description?: string;
+  memberCount?: number;
+  subscriberCount?: number;
+  isPrivate?: boolean;
+  createdAt?: string;
+  owner?: {
+    id: string;
+    username: string;
+    name: string;
+  };
+}
+
+export interface ListsResult {
+  success: boolean;
+  lists?: TwitterList[];
+  error?: string;
+}
+
 export interface CreateTweetResponse {
   data?: {
     create_tweet?: {

src/lib/twitter-client.ts

@@ -1,5 +1,6 @@
 import type { AbstractConstructor } from './twitter-client-base.js';
 import { TwitterClientBase } from './twitter-client-base.js';
+import { type TwitterClientListMethods, withLists } from './twitter-client-lists.js';
 import { type TwitterClientMediaMethods, withMedia } from './twitter-client-media.js';
 import { type TwitterClientPostingMethods, withPosting } from './twitter-client-posting.js';
 import { type TwitterClientSearchMethods, withSearch } from './twitter-client-search.js';
@@ -8,6 +9,7 @@ import { type TwitterClientTweetDetailMethods, withTweetDetails } from './twitte
 import { type TwitterClientUserMethods, withUsers } from './twitter-client-users.js';
 
 type TwitterClientInstance = TwitterClientBase &
+  TwitterClientListMethods &
   TwitterClientMediaMethods &
   TwitterClientPostingMethods &
   TwitterClientSearchMethods &
@@ -16,7 +18,7 @@ type TwitterClientInstance = TwitterClientBase &
   TwitterClientUserMethods;
 
 const MixedTwitterClient = withUsers(
-  withTimelines(withSearch(withTweetDetails(withPosting(withMedia(TwitterClientBase))))),
+  withLists(withTimelines(withSearch(withTweetDetails(withPosting(withMedia(TwitterClientBase)))))),
 ) as AbstractConstructor<TwitterClientInstance>;
 
 export class TwitterClient extends MixedTwitterClient {}
@@ -25,10 +27,12 @@ export type {
   CurrentUserResult,
   FollowingResult,
   GetTweetResult,
+  ListsResult,
   SearchResult,
   TweetData,
   TweetResult,
   TwitterClientOptions,
+  TwitterList,
   TwitterUser,
   UploadMediaResult,
 } from './twitter-client-types.js';

tests/twitter-client.lists.test.ts

@@ -0,0 +1,495 @@
+// ABOUTME: Tests for TwitterClient list methods.
+// ABOUTME: Tests getOwnedLists, getListMemberships, and getListTimeline.
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+type TwitterClientPrivate = TwitterClient & {
+  getCurrentUser: () => Promise<{
+    success: boolean;
+    user?: { id: string; username: string; name: string };
+    error?: string;
+  }>;
+  getListOwnershipsQueryIds: () => Promise<string[]>;
+  getListMembershipsQueryIds: () => Promise<string[]>;
+  getListTimelineQueryIds: () => Promise<string[]>;
+  refreshQueryIds: () => Promise<void>;
+};
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient lists', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  describe('getOwnedLists', () => {
+    it('fetches owned lists and parses list results', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                list: {
+                                  id_str: '1234567890',
+                                  name: 'My Test List',
+                                  description: 'A test list for testing',
+                                  member_count: 10,
+                                  subscriber_count: 5,
+                                  mode: 'Public',
+                                  created_at: '2024-01-01T00:00:00Z',
+                                  user_results: {
+                                    result: {
+                                      rest_id: '12345',
+                                      legacy: { screen_name: 'testuser', name: 'Test User' },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListOwnershipsQueryIds = async () => ['test'];
+
+      const result = await client.getOwnedLists(100);
+
+      expect(result.success).toBe(true);
+      expect(result.lists).toHaveLength(1);
+      expect(result.lists?.[0].id).toBe('1234567890');
+      expect(result.lists?.[0].name).toBe('My Test List');
+      expect(result.lists?.[0].description).toBe('A test list for testing');
+      expect(result.lists?.[0].memberCount).toBe(10);
+      expect(result.lists?.[0].subscriberCount).toBe(5);
+      expect(result.lists?.[0].isPrivate).toBe(false);
+      expect(result.lists?.[0].owner?.username).toBe('testuser');
+    });
+
+    it('handles private lists correctly', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                list: {
+                                  id_str: '9999',
+                                  name: 'Secret List',
+                                  mode: 'Private',
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListOwnershipsQueryIds = async () => ['test'];
+
+      const result = await client.getOwnedLists(100);
+
+      expect(result.success).toBe(true);
+      expect(result.lists?.[0].isPrivate).toBe(true);
+    });
+
+    it('returns empty array when no lists exist', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListOwnershipsQueryIds = async () => ['test'];
+
+      const result = await client.getOwnedLists(100);
+
+      expect(result.success).toBe(true);
+      expect(result.lists).toEqual([]);
+    });
+
+    it('returns error on API failure', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 500,
+        text: async () => 'Internal Server Error',
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListOwnershipsQueryIds = async () => ['test'];
+
+      const result = await client.getOwnedLists(100);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns error when getCurrentUser fails', async () => {
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: false,
+        error: 'Unauthorized',
+      });
+
+      const result = await client.getOwnedLists(100);
+
+      expect(result.success).toBe(false);
+      // When getCurrentUser fails with an error, that error is used; otherwise fallback message is used
+      expect(result.error).toContain('Unauthorized');
+    });
+
+    it('handles API errors in response', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          errors: [{ message: 'Rate limit exceeded' }],
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListOwnershipsQueryIds = async () => ['test'];
+
+      const result = await client.getOwnedLists(100);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('Rate limit exceeded');
+    });
+  });
+
+  describe('getListMemberships', () => {
+    it('fetches list memberships and parses list results', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                list: {
+                                  id_str: '5555',
+                                  name: 'Member List',
+                                  member_count: 100,
+                                  user_results: {
+                                    result: {
+                                      rest_id: '99999',
+                                      legacy: { screen_name: 'otheruser', name: 'Other User' },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListMembershipsQueryIds = async () => ['test'];
+
+      const result = await client.getListMemberships(100);
+
+      expect(result.success).toBe(true);
+      expect(result.lists?.[0].id).toBe('5555');
+      expect(result.lists?.[0].name).toBe('Member List');
+      expect(result.lists?.[0].owner?.username).toBe('otheruser');
+    });
+  });
+
+  describe('getListTimeline', () => {
+    it('fetches list timeline and parses tweet results', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            list: {
+              tweets_timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              tweet_results: {
+                                result: {
+                                  rest_id: '111',
+                                  legacy: {
+                                    full_text: 'Tweet from list',
+                                    created_at: '2024-01-01T00:00:00Z',
+                                    reply_count: 0,
+                                    retweet_count: 0,
+                                    favorite_count: 0,
+                                    conversation_id_str: '111',
+                                  },
+                                  core: {
+                                    user_results: {
+                                      result: {
+                                        rest_id: 'u1',
+                                        legacy: { screen_name: 'listmember', name: 'List Member' },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getListTimelineQueryIds = async () => ['test'];
+
+      const result = await client.getListTimeline('1234567890', 20);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets?.[0].id).toBe('111');
+      expect(result.tweets?.[0].text).toBe('Tweet from list');
+      expect(result.tweets?.[0].author.username).toBe('listmember');
+    });
+
+    it('returns empty array when list has no tweets', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            list: {
+              tweets_timeline: {
+                timeline: {
+                  instructions: [],
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getListTimelineQueryIds = async () => ['test'];
+
+      const result = await client.getListTimeline('1234567890', 20);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets).toEqual([]);
+    });
+
+    it('returns error on API failure', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 403,
+        text: async () => 'Forbidden',
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getListTimelineQueryIds = async () => ['test'];
+
+      const result = await client.getListTimeline('1234567890', 20);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 403');
+    });
+
+    it('handles API errors in response', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          errors: [{ message: 'List not found' }],
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getListTimelineQueryIds = async () => ['test'];
+
+      const result = await client.getListTimeline('nonexistent', 20);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('List not found');
+    });
+
+    it('retries on 404 error after refreshing query IDs', async () => {
+      mockFetch
+        .mockResolvedValueOnce({
+          ok: false,
+          status: 404,
+          text: async () => 'Not Found',
+        })
+        .mockResolvedValueOnce({
+          ok: true,
+          status: 200,
+          json: async () => ({
+            data: {
+              list: {
+                tweets_timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                tweet_results: {
+                                  result: {
+                                    rest_id: '222',
+                                    legacy: {
+                                      full_text: 'Retry success',
+                                      created_at: '2024-01-01T00:00:00Z',
+                                      reply_count: 0,
+                                      retweet_count: 0,
+                                      favorite_count: 0,
+                                      conversation_id_str: '222',
+                                    },
+                                    core: {
+                                      user_results: {
+                                        result: {
+                                          rest_id: 'u2',
+                                          legacy: { screen_name: 'user2', name: 'User Two' },
+                                        },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          }),
+        });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getListTimelineQueryIds = async () => ['test'];
+      clientPrivate.refreshQueryIds = async () => {};
+
+      const result = await client.getListTimeline('1234567890', 20);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets?.[0].id).toBe('222');
+      expect(mockFetch).toHaveBeenCalledTimes(2);
+    });
+  });
+});