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wikipedia-mcp-server MCP Server

Search Wikipedia, read summaries and full text, target sections, find nearby pages, list languages.

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

Pod has not dialled wikipedia-mcp-server yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

Connect

Published as @cyanheads/wikipedia-mcp-server on npm. Runs locally.

Known issues

34 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 12.

Most discussed

bug(wikipedia_search): float limit bypasses validation, triggers spurious no_results

Server version

0.1.2

mcp-ts-core version

0.9.9

Runtime

Bun

Runtime version

Bun 1.3.11

Transport

HTTP (Streamable HTTP)

OS

macOS 25.1.0

Description

wikipedia_search accepts a limit: number parameter that passes Zod validation for float values (e.g., 5.7). The float is then passed as "5.7" to the Wikipedia Action API's srlimit parameter, which rejects non-integers with badinteger. The server handles this by receiving an empty results array and t

Read the thread · 2026-05-25 · closed · 3 comments

bug(all tools): not_found error contract declares reason but notFound() factory omits data.reason

Server version

0.1.2

mcp-ts-core version

0.9.9

Runtime

Node.js

Runtime version

Bun 1.3.11

Transport

HTTP (Streamable HTTP)

OS

macOS 25.1.0

Description

All six tools declare a not_found entry in their errors[] contract, but when the error fires, result.structuredContent.error.data.reason is absent. Agents and tooling that check data.reason === "not_found" to distinguish this error from others will never match.

The root cause: the service layer (`w

Read the thread · 2026-05-25 · closed · 3 comments

bug(all tools): non-existent Wikipedia language editions expose full API URL in network error

Valid BCP 47 language codes that don't correspond to an existing Wikipedia edition (e.g. "xx", "zz") pass the regex validation in buildBaseUrl() but produce a network error after 4 retry attempts. The error message leaks the full internal API URL and exposes implementation details.

Steps to reproduce

  1. Call wikipedia_search with language: "xx" (valid format, no Wikipedia edition).
  2. Observe network error after ~10s (4 retries × timeout).

Actual behavior

{
  "code"

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/6) · 2026-05-24 · closed · 3 comments

### bug(wikipedia_get_article): side-box template text renders as prose — Library resources, sister projects, and spoken-article boxes

### Server version

0.1.14

### mcp-ts-core version

0.11.0

### Runtime

Bun

### Runtime version

Bun 1.3.14

### Transport

stdio

### Description

Related: #28, #32

`htmlSectionToPlainText` renders the text of `{{Side box}}`-family templates — `{{Library resources box}}`, `{{Sister project links}}`, `{{Spoken Wikipedia}}` — as article prose. They are `<div class="side-box metadata …">`, and only `<table>` is checked against MediaWiki's `metadata` class, so the `<div>` form is walked into an

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/34) · 2026-07-30 · closed · 2 comments

### bug(wikipedia_get_article): text of display:none elements leaks into plain text — MathML duplicates every formula, gadgets emit UI labels

### Server version

0.1.14

### mcp-ts-core version

0.11.0

### Runtime

Bun

### Runtime version

Bun 1.3.14

### Transport

http

### Description

Related: #28

Tag stripping keeps the text of elements MediaWiki hides with an inline `style="display:none"`. Nothing in the pipeline reads inline styles, so hidden markup reaches the caller as prose. Two shapes account for it:

- **Math.** The [Math extension](https://www.mediawiki.org/wiki/Extension:Math) emits `<span class="mwe-math-element">` c

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/33) · 2026-07-30 · closed · 2 comments

### Most recent

### feat(wikipedia_search_nearby): truncated results are unreachable — raise the limit cap to the upstream 500 and fix the cap notice

`wikipedia_search_nearby` caps `limit` at 50 and discloses truncation via `ctx.enrich.truncated`, but nothing lets a caller reach the results past the cap. [MediaWiki's geosearch module](https://www.mediawiki.org/wiki/Extension:GeoData#list=geosearch) has no `offset` or `continue` parameter, so there is no pagination to fall back on — the server's own cap is the entire ceiling.

That cap is 10× stricter than upstream. `action=paraminfo&modules=query%2Bgeosearch` reports `gslimit` `max: 500` (`hi

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/29) · 2026-07-30 · closed · 2 comments

### bug(wikipedia_get_article): section reads hoist headings into a fake TOC and drop inline template text

### Server version

0.1.13

### mcp-ts-core version

0.10.14

### Runtime

Bun

### Runtime version

Bun 1.3.14

### Transport

http

### Description

Section-targeted reads (`wikipedia_get_article` with `section_index`) fetch raw wikitext via `action=parse&prop=wikitext` and strip it through `stripWikitext` / [wtf_wikipedia](https://github.com/spencermountain/wtf_wikipedia). Full-article reads take a different route — `action=query&prop=extracts&explaintext` — and the two produce materially dif

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/28) · 2026-07-30 · closed · 2 comments

### bug(wikipedia_get_languages): redirect titles are not resolved — alias returns no_other_languages

### Server version

0.1.13

### mcp-ts-core version

0.10.14

### Runtime

Bun

### Runtime version

Bun 1.3.14

### Transport

http

### Description

`wikipedia_get_languages` is the one read path that does not pass `redirects: 'true'` to the Action API. `getSummary` (REST, implicit), `getArticleFull`, `getArticleSection`, and `getSections` all resolve redirects; the `langlinks` query in `getLanguages` does not. A redirect page carries no interwiki links of its own, so the tool reports the arti

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/27) · 2026-07-30 · closed · 2 comments

### bug(invalid_language): hardcoded edition allowlist rejects ~49 real Wikipedia editions and contains a phantom entry

### Server version

0.1.13

### mcp-ts-core version

0.10.14

### Runtime

Bun

### Runtime version

Bun 1.3.14

### Transport

http

### Description

`KNOWN_WIKIPEDIA_EDITIONS` in `src/services/wikipedia/wikipedia-service.ts` is a hand-maintained set of 227 codes gating every tool's `language` parameter. [Wikipedia currently runs ~340 language editions](https://meta.wikimedia.org/wiki/List_of_Wikipedias), so the list is materially incomplete, and a hardcoded list cannot track editions as they a

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/26) · 2026-07-30 · closed · 2 comments

### bug(wikipedia_get_sections): getSections relies on the deprecated MediaWiki prop=sections parameter

### Server version

0.1.11

### mcp-ts-core version

0.10.14

### Runtime

Bun

### Runtime version

Bun 1.3.14

### Transport

N/A — reproduces on the upstream MediaWiki Action API directly, independent of transport.

### Description

`WikipediaService.getSections()` (`src/services/wikipedia/wikipedia-service.ts`) calls the MediaWiki Action API with `action=parse&prop=sections`. MediaWiki now flags this parameter as deprecated in favor of `prop=tocdata` on every response. The call still succeed

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/25) · 2026-07-17 · closed · 1 comment

### bug(wikipedia_get_languages): missing-url fallback composes wrong host for langcode≠subdomain editions

### Server version

0.1.11

### mcp-ts-core version

0.10.14

### Runtime

Bun

### Runtime version

Bun 1.3.x

### Transport

http

### Description

`wikipedia_get_languages` derives each interwiki entry's `url` from the MediaWiki `langlinks` API (`llprop=url`). When the API omits `url` for an entry, the service falls back to composing `https://<language_code>.wikipedia.org/...` from the language code. For editions whose language code differs from their URL subdomain — e.g. `gsw` → `als.wikiped

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/24) · 2026-07-17 · closed · 2 comments

### feat(wikipedia_get_article): add overflow handling for full-article responses

`wikipedia_get_article` can return very large full-article payloads in a single response. A live call for `{ "title": "Python (programming language)" }` returned `content.length === 40428`, and larger articles will be more expensive for clients to ingest blindly.

## Proposal

Add explicit overflow handling for full-article reads while preserving targeted section reads as the precise path.

### Proposed behavior

When a full article exceeds a configured/default threshold, return a compact outlin

[Read the thread](https://github.com/cyanheads/wikipedia-mcp-server/issues/23) · 2026-06-28 · closed · 1 comment

[See all 19 reports Pod holds for wikipedia-mcp-server](/mcp/wikipedia-mcp-server/issues) — of 34 qualified upstream.

## Firsthand observations

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