ContextFetch

dev.contextfetch/mcpcontextfetch.devstreamable-httpv1.1.0Scanned 1 hour ago

Web search and any page as LLM-ready Markdown for AI agents. Free keyless tier, no signup.

13 tools: 6 change things and 7 only read.

Reads private data · 2
Reads text others write · 13
Can send data out · 4
1 finding

Tools listed without sign-in. Remote posture

Anlyon alternative

6 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

13 tools

Changes things 6Creates or changes something that can be changed back.Claude Code: ask

contextfetch_answerAnswer a question with passages quoted verbatim from the web, never generated: searches, scores every passage of the top pages with a cross-encoder and returns the best ones with […Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Answer a question with passages quoted verbatim from the web, never generated: searches, scores every passage of the top pages with a cross-encoder and returns the best ones with [n] citations to their sources. Use it for quick factual lookups; the quotes may not fully answer an open-ended question. Costs 1 credit.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
contextfetch_auto_reloadTurn auto-reload on or off, or change it: when credits drop below `threshold`, the saved card buys `pack` again, up to `monthly_max_usd` per month.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Turn auto-reload on or off, or change it: when credits drop below `threshold`, the saved card buys `pack` again, up to `monthly_max_usd` per month. Needs an API key and a card saved at checkout. The monthly cap cannot be raised above $500 here.
Annotations the server declares
- readOnlyHint: false
- idempotentHint: true
- openWorldHint: true
contextfetch_crawlCrawl one website from a start URL and get its pages as Markdown: same-site links only, up to `max_depth` hops (<= 3) and `limit` pages (<= 50).Reads text others writeCan send data outNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe name "contextfetch_crawl" says "crawl": it reads web pages, which anyone can write.
- untrusted-inputThe description's first sentence says "crawl": it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Description, as the server wrote it
Crawl one website from a start URL and get its pages as Markdown: same-site links only, up to `max_depth` hops (<= 3) and `limit` pages (<= 50). Pass `query` to rank the pages by relevance and return only their relevant passages. Costs 1 credit per page returned.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
contextfetch_deep_researchDeep research in one call, no LLM: a deep search of the question, its sub-topics (or your sub_queries) as searches of their own, and the pages its list and index results link to, r…Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Deep research in one call, no LLM: a deep search of the question, its sub-topics (or your sub_queries) as searches of their own, and the pages its list and index results link to, returned as one cited report: summary, key facts, a section per sub-topic and the sources, every passage quoted verbatim with [n]. Costs 10 credits. For a quick evidence pack use contextfetch_research.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
contextfetch_get_free_keyGet a free ContextFetch API key (no signup, no payment) with starter credits, for when the keyless daily limit runs out.Reads text others write1 finding
Why it is in this group
- The name "contextfetch_get_free_key" says "get": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
  The server marks "contextfetch_get_free_key" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"openWorldHint":true}; The name "contextfetch_get_free_key" says "get": a word for reading.
  What this check looks for
Description, as the server wrote it
Get a free ContextFetch API key (no signup, no payment) with starter credits, for when the keyless daily limit runs out. One key per network, ever: keep the key it returns and use it as `Authorization: Bearer <key>`.
Annotations the server declares
- readOnlyHint: false
- openWorldHint: true
contextfetch_researchResearch a question in one call, server-side: runs up to 5 web searches (sub-queries) concurrently, dedupes the pages by URL, ranks them all against the question with a cross-encod…Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Research a question in one call, server-side: runs up to 5 web searches (sub-queries) concurrently, dedupes the pages by URL, ranks them all against the question with a cross-encoder and returns one Markdown evidence pack with numbered [n] sources and their query-pruned passages, quoted verbatim (no generated text). Costs 1 credit per sub-query. Pass your own `sub_queries` (distinct angles on the question) for better coverage; if omitted they are derived from `query`: the query, query + "documentation", and query + "benchmark" (speed or comparison questions) or + "example".
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

Only reads 7Looks things up and changes nothing.Show 7 read-only tools

contextfetch_balanceShow the API key's remaining credits, daily burn rate (7-day average) and auto-reload settings, including the last auto-reload error if a payment failed.Reads text others writeNo findings
Why it is in this group
- The description's first verb is "show": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Show the API key's remaining credits, daily burn rate (7-day average) and auto-reload settings, including the last auto-reload error if a payment failed. Needs an API key (Authorization: Bearer); free.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
contextfetch_extract_urlFetch a public web page (docs, articles, GitHub files, arXiv papers) as clean Markdown with tables preserved.Reads private dataReads text others writeCan send data outNo findings
Why it is in this group
- The description's first verb is "fetch": a word for reading.
What it can reach
- private-dataThe description's first sentence says "fetch" and "doc": it reads documents.
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe name "contextfetch_extract_url" says "url": it reads web pages, which anyone can write.
- untrusted-inputThe description's first sentence says "fetch" and "web": it reads web pages, which anyone can write.
- untrusted-inputThe input takes a URL (input.url), and the tool reads it: it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Claude Code: ask, because it is tagged outbound.
Description, as the server wrote it
Fetch a public web page (docs, articles, GitHub files, arXiv papers) as clean Markdown with tables preserved. Pass `query` to get only the passages relevant to it instead of the whole page.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
contextfetch_find_similarFind pages similar to a given URL (alternatives, related docs, competing libraries), excluding the source domain.Reads private dataReads text others writeCan send data outNo findings
Why it is in this group
- The name "contextfetch_find_similar" says "find": a word for reading.
What it can reach
- private-dataThe description's first sentence says "find" and "doc": it reads documents.
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "find" and "url": it reads web pages, which anyone can write.
- untrusted-inputThe input takes a URL (input.url), and the tool reads it: it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Claude Code: ask, because it is tagged outbound.
Description, as the server wrote it
Find pages similar to a given URL (alternatives, related docs, competing libraries), excluding the source domain. Returns titles, URLs and the most relevant passages as Markdown.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
contextfetch_mapList a website's URLs without fetching its pages: its sitemaps (from robots.txt, else /sitemap.xml) plus the start page's links, same site only, up to `limit` (<= 5,000).Reads text others writeCan send data outNo findings
Why it is in this group
- The description's first verb is "list": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "list" and "website": it reads web pages, which anyone can write.
- untrusted-inputThe input takes a URL (input.url), and the tool reads it: it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Claude Code: ask, because it is tagged outbound.
Description, as the server wrote it
List a website's URLs without fetching its pages: its sitemaps (from robots.txt, else /sitemap.xml) plus the start page's links, same site only, up to `limit` (<= 5,000). Use it to find the right pages before contextfetch_extract_url or contextfetch_crawl. Costs 1 credit.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
contextfetch_searchSearch the web and get LLM-ready Markdown.Reads text others writeNo findings
Why it is in this group
- The name "contextfetch_search" says "search": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "search" and "web": it reads web pages, which anyone can write.
Description, as the server wrote it
Search the web and get LLM-ready Markdown. Each result has its title, URL and only the passages relevant to the query (cross-encoder pruned context), so it costs far fewer tokens than raw pages. Use for current events, documentation, APIs, research and fact checking.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
fetchFetch the full text of a search result by its id (a URL).Reads text others writeNo findings
Why it is in this group
- The name "fetch" says "fetch": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "fetch" and "url": it reads web pages, which anyone can write.
Description, as the server wrote it
Fetch the full text of a search result by its id (a URL). Returns {id, title, text, url, metadata} as JSON.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
searchSearch the web.Reads text others writeNo findings
Why it is in this group
- The name "search" says "search": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "search" and "web": it reads web pages, which anyone can write.
Description, as the server wrote it
Search the web. Returns {results: [{id, title, url}]} as JSON; pass an id to `fetch` for the page text.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

104 paths in this server alone from private data, through text someone else wrote, to a way out. Denying 2 private-data tools breaks every one.

Reads private data2: Reads files, mail, messages, databases, secrets, calendars or repositories.; contextfetch_extract_url
contextfetch_find_similar
Reads text others write13: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; contextfetch_answer
contextfetch_auto_reload
contextfetch_balance
contextfetch_crawl
contextfetch_deep_research
contextfetch_extract_url
contextfetch_find_similar
contextfetch_get_free_key
contextfetch_map
contextfetch_research
contextfetch_search
fetch
and 1 more
Can send data out4: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; contextfetch_crawl
contextfetch_extract_url
contextfetch_find_similar
contextfetch_map

deny to break every path

{
  "permissions": {
    "deny": [
      "mcp__contextfetch__contextfetch_extract_url",
      "mcp__contextfetch__contextfetch_find_similar"
    ]
  }
}

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Tools listed without sign-in

Looked at Oct 22, 2026, 14:45 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable: yes
HTTP status of an anonymous initialize: 200
tools/list served without credentials: yes
Tools that change things, listed without credentials: 6
Protocol version: 2025-06-18
WWW-Authenticate on 401: not observed
resource_metadata in WWW-Authenticate: not observed
RFC 9728 protected resource metadata: not observed
Authorization servers: not observed
Legacy HTTP+SSE transport: no
Dynamic client registration: not observed
Client ID metadata documents: not observed

WarnThe whole server
The endpoint served tools/list without credentials, and the list has 6 tools that change things (6 write). Whether a call also works without credentials was not tested: tools are never called.
Matched text
https://api.contextfetch.dev/mcp: tools/list returned 13 tools to an anonymous client, including contextfetch_research (write), contextfetch_deep_research (write), contextfetch_answer (write), contextfetch_crawl (write), contextfetch_auto_reload (write) and 1 more
What this check looks for

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warncontextfetch_get_free_key
The server marks "contextfetch_get_free_key" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"openWorldHint":true}; The name "contextfetch_get_free_key" says "get": a word for reading.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http contextfetch https://api.contextfetch.dev/mcp

claude mcp add --transport http contextfetch https://api.contextfetch.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__contextfetch__contextfetch_search",
      "mcp__contextfetch__contextfetch_balance",
      "mcp__contextfetch__search",
      "mcp__contextfetch__fetch"
    ],
    "ask": [
      "mcp__contextfetch__contextfetch_extract_url",
      "mcp__contextfetch__contextfetch_find_similar",
      "mcp__contextfetch__contextfetch_research",
      "mcp__contextfetch__contextfetch_deep_research",
      "mcp__contextfetch__contextfetch_answer",
      "mcp__contextfetch__contextfetch_crawl",
      "mcp__contextfetch__contextfetch_map",
      "mcp__contextfetch__contextfetch_auto_reload",
      "mcp__contextfetch__contextfetch_get_free_key"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as contextfetch. Review it before you use it.

Capability tags behind 13 rules

mcp__contextfetch__contextfetch_search untrusted-input
mcp__contextfetch__contextfetch_extract_url private-data, untrusted-input, outbound
mcp__contextfetch__contextfetch_find_similar private-data, untrusted-input, outbound
mcp__contextfetch__contextfetch_research untrusted-input
mcp__contextfetch__contextfetch_deep_research untrusted-input
mcp__contextfetch__contextfetch_answer untrusted-input
mcp__contextfetch__contextfetch_crawl untrusted-input, outbound
mcp__contextfetch__contextfetch_map untrusted-input, outbound
mcp__contextfetch__contextfetch_balance untrusted-input
mcp__contextfetch__contextfetch_auto_reload untrusted-input
mcp__contextfetch__contextfetch_get_free_key untrusted-input
mcp__contextfetch__search untrusted-input
mcp__contextfetch__fetch untrusted-input

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/dev.contextfetch/mcp/verify?hash=4b0e1e152d4f504f7b9a9eb973ef28e655afee8f0fb84129548d9d29472106d2" | jq -e '.changed == false'

Pinned hash 4b0e1e152d4f, from Oct 22, 2026, 16:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/dev.contextfetch/mcp/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

[![anlyon.dev](https://anlyon.dev/badge/dev.contextfetch/mcp.svg)](https://anlyon.dev/servers/dev.contextfetch/mcp)

Source: MCP Registry · repository. Synced Oct 22, 2026, 17:18 UTC.