jackwener/OpenCLI · error · CommandExecutionError

Nowcoder detail returned a different post identity

Error message

Nowcoder detail returned a different post identity

What it means

After projecting the detail, projectNowcoderDetail verifies that the returned post's identity matches what you asked for: for content targets the API's id must equal the requested content ID; for moment targets the API's uuid must equal the requested UUID. If Nowcoder's API returns data for a different post than requested (redirect, stale cache, alias resolution), the library throws this CommandExecutionError instead of showing wrong data.

Source

Thrown at clis/nowcoder/posts.js:209

        || (host !== 'nowcoder.com' && host !== 'www.nowcoder.com')) {
        throw new ArgumentError('nowcoder detail only accepts canonical https://www.nowcoder.com post URLs');
    }
    const content = url.pathname.match(/^\/discuss\/([1-9]\d*)\/?$/);
    if (content) return { post_type: 'content', value: content[1] };
    const moment = url.pathname.match(/^\/feed\/main\/detail\/([0-9a-f]{32})\/?$/i);
    if (moment) return { post_type: 'moment', value: moment[1].toLowerCase() };
    throw new ArgumentError('Unsupported Nowcoder URL; expected /discuss/<content-id> or /feed/main/detail/<moment-uuid>');
}

export function projectNowcoderDetail(data, target) {
    if (!isRecord(data) || !isRecord(data.frequencyData)) throw new CommandExecutionError('Nowcoder detail returned malformed post data');
    const isContent = target.post_type === 'content';
    const expectedEntityType = isContent ? CONTENT_ENTITY_TYPE : MOMENT_TYPE;
    if (data.entityType !== expectedEntityType) throw new CommandExecutionError('Nowcoder detail returned a mismatched post entity type');
    const uuid = requiredUuid(data.uuid, `${target.post_type} uuid`);
    const entityId = requiredId(data.entityId, `${target.post_type} entity id`);
    const id = isContent ? requiredId(data.id, 'content id') : uuid;
    if (isContent ? id !== target.value : uuid !== target.value) throw new CommandExecutionError('Nowcoder detail returned a different post identity');
    if (!isContent && entityId !== requiredId(data.id, 'moment id')) throw new CommandExecutionError('Nowcoder detail returned mismatched moment entity ids');
    const expectedAuthorId = isContent ? data.authorId : data.userId;
    const body = cleanBody(isContent ? data.richText : data.content, `${target.post_type} detail body`);
    return {
        post_type: target.post_type,
        id,
        uuid,
        entity_id: entityId,
        url: isContent
            ? `https://www.nowcoder.com/discuss/${id}`
            : `https://www.nowcoder.com/feed/main/detail/${uuid}`,
        title: optionalText(data.title, `${target.post_type} title`) || '(untitled)',
        ...authorFields(data.userBrief, expectedAuthorId, target.post_type),
        content: body,
        likes: metric(data.frequencyData, 'likeCnt'),
        comments: metric(data.frequencyData, 'commentCnt'),
        views: metric(data.frequencyData, 'viewCnt'),
        time: isoTime(isContent ? data.createTime : data.createdAt, `${target.post_type} timestamp`),

View on GitHub (pinned to 49907e53dc)

Solutions

1. Re-check the content ID / moment UUID for typos and confirm it matches the post you want in the browser.
2. Clear any cache/CDN layer between you and the API, or retry to rule out stale responses.
3. If the post was deleted or merged, find and use the new canonical ID/UUID.
4. If this occurs consistently for a valid ID, report it — the identity check may need to accommodate server-side ID migration.

Example fix

// before
nowcoder detail 70123457  // typo'd id resolves to another post's record
// after
nowcoder detail 70123456  // id copied from the post's canonical URL

// verify the canonical URL actually resolves to this exact ID before fetching
const canonical = `https://www.nowcoder.com/discuss/${id}`;
// confirm canonical URL matches the post you intend before invoking the CLI

try {
  const post = await nowcoderDetail(id);
} catch (err) {
  if (err instanceof CommandExecutionError && /different post identity/.test(err.message)) {
    console.error(`API returned a different post for ${id}; it may be deleted/merged. Re-fetch the canonical URL.`);
  } else throw err;
}

When it happens

Trigger: Requesting /discuss/<id> but the API returns a record whose id differs from <id> (e.g. the ID was redirected/merged to another post), or requesting a moment UUID that the API resolves to a different uuid in the response.

Common situations: Deleted posts being aliased to other content; cached/stale CDN responses; typos in the ID that happen to resolve to another valid post; Nowcoder server-side redirects on merged or moderated posts.

Related errors

• Nowcoder detail returned mismatched moment entity ids
• Malformed toutiao recommend row: group_id/source_url mismatc
• Bilibili ${label} API returned a malformed payload
• Bilibili ${label} API failed: ${message} (${payload.code})
• Bilibili ${label} API returned malformed data

AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/0b5177779df04433. Report an issue: GitHub.