{ "data": { "tool": { "category": "", "endpoint": "https://ferritin.rs/mcp", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/ferritin-rustdoc.json", "kind": "mcp", "listed": "indexed", "liveUrl": "https://www.anchorterminal.com/api/v1/live/ferritin-rustdoc.json", "markdownUrl": "https://www.anchorterminal.com/tools/ferritin-rustdoc.md", "mcpTools": { "check": { "checker": "anchor-check/1.0", "totalTokens": 484, "counts": { "error": 0, "note": 1, "warn": 0 }, "findings": [ { "rule": "TC24", "severity": "note", "message": "2 of 2 tools have no outputSchema", "fix": "Declare outputSchema for tools that return structured data, and return structuredContent that matches it." } ] }, "checkedAt": "2026-10-04T22:25:52Z", "count": 2, "schemaTokens": 484, "status": "ok", "tools": [ { "name": "get", "description": "Show documentation for a Rust item by path.", "inputSchema": { "examples": [ { "description": "Look up a trait", "path": "serde::Deserialize" } ], "properties": { "path": { "description": "Item path, e.g. `serde::Deserialize` or `std::vec::Vec`. A crate segment\nmay carry an `@`-suffixed semver requirement (not an exact version):\n`tokio@1::runtime::Runtime` serves the newest 1.x, while `tokio@=1.40`\npins an exact release.", "type": "string" } }, "required": [ "path" ], "type": "object" }, "annotations": { "destructiveHint": false, "idempotentHint": true, "openWorldHint": true, "readOnlyHint": true } }, { "name": "search", "description": "Search for items within a crate's documentation, or — without a crate —\ndiscover which crate to use.", "inputSchema": { "examples": [ { "crate": "serde", "description": "Find deserialization items in serde", "query": "deserialize" }, { "description": "Discover which crate to use for MQTT", "query": "mqtt client" } ], "properties": { "crate": { "description": "Crate to search within, optionally with an `@`-suffixed semver\nrequirement (not an exact version): `serde`, `tokio@1` (newest 1.x), or\n`tokio@=1.40` to pin an exact release.\n\n**Omit only to discover which crate to use.** With `crate`, the search\nruns over that crate's full documentation — item names and prose.\nWithout it, it searches a different, much shallower dataset: crates.io\ncrate names, descriptions, and declared keywords. It returns crates,\nnot items, and cannot see any crate's actual documentation. If you\nalready know the crate name, always pass it.", "type": "string" }, "query": { "description": "Search query — one or more complete words. With `crate`, matched\nagainst item names and documentation prose; without it, against crate\nnames, descriptions, and declared keywords.", "type": "string" } }, "required": [ "query" ], "type": "object" }, "annotations": { "destructiveHint": false, "idempotentHint": true, "openWorldHint": true, "readOnlyHint": true } } ] }, "name": "Ferritin — Rust documentation", "note": "Indexed from the official MCP registry: facts and our own checks, not reviewed, so no score, grade or rank.", "packages": null, "pageJsonUrl": "https://www.anchorterminal.com/tools/ferritin-rustdoc.json", "popularity": { "githubStars": 37 }, "registryName": "rs.ferritin/rustdoc", "remotes": [ { "type": "streamable-http", "url": "https://ferritin.rs/mcp" } ], "repository": "https://github.com/jbr/ferritin", "reviewed": false, "slug": "ferritin-rustdoc", "source": "the official MCP registry", "sourceUrl": "https://registry.modelcontextprotocol.io/v0.1/servers?search=rs.ferritin/rustdoc", "summary": "Search and read Rust documentation for the standard library and any crate on crates.io", "updatedAt": "2026-07-22T01:29:14Z", "url": "https://www.anchorterminal.com/tools/ferritin-rustdoc", "vendor": "ferritin.rs", "vendorUrl": "https://ferritin.rs", "version": "2026.7.21", "websiteUrl": "https://ferritin.rs", "where": "hosted", "why": [ "vendor" ] } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/tools/ferritin-rustdoc", "json": "https://www.anchorterminal.com/tools/ferritin-rustdoc.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/tools/ferritin-rustdoc.md", "slim": "https://www.anchorterminal.com/tools/ferritin-rustdoc.min.md" }, "markdown": "# Ferritin — Rust documentation\n\n\u003e Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/\n\n- Kind: MCP server, by ferritin.rs (https://ferritin.rs)\n- Listed because: It's published in the registry under ferritin.rs, a namespace the registry only gives to whoever proves they control that domain.\n- What the official MCP registry says: Search and read Rust documentation for the standard library and any crate on crates.io\n\n## Facts\n\n- MCP registry: `rs.ferritin/rustdoc` 2026.7.21\n- Endpoint: https://ferritin.rs/mcp (streamable HTTP)\n- Source: https://github.com/jbr/ferritin\n- Website: https://ferritin.rs\n- GitHub stars: 37\n- Registry entry updated: 2026-07-22\n\n## Tools\n\n- Tools it lists (2, about 484 tokens of context, `tools/list` without credentials over MCP 2026-07-28, checked 2026-10-04 22:25 UTC):\n - `get` (read-only): Show documentation for a Rust item by path.\n - `search` (read-only): Search for items within a crate's documentation, or — without a crate — discover which crate to use.\n- How its tools read to an agent (0 errors, 0 warnings, 1 note, about 484 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):\n - note TC24 server: 2 of 2 tools have no outputSchema\n\n- JSON: https://www.anchorterminal.com/api/v1/tools/ferritin-rustdoc.json\n- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-05", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Terminal", "url": "https://www.anchorterminal.com/tools/" }, { "name": "Indexed", "url": "https://www.anchorterminal.com/indexed/" }, { "name": "Ferritin — Rust documentation", "url": "" } ], "description": "Ferritin — Rust documentation, an MCP server by ferritin.rs, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Search and read Rust documentation for the standard library and any crate on crates.io", "facts": [ "not reviewed", "not ranked", "facts only" ], "h1": "Ferritin — Rust documentation", "image": "https://www.anchorterminal.com/assets/og/indexed.png", "path": "/tools/ferritin-rustdoc", "published": "", "section": "indexed", "title": "Ferritin — Rust documentation, indexed from the official MCP registry", "toc": null, "updated": "2026-10-05", "url": "https://www.anchorterminal.com/tools/ferritin-rustdoc" }, "tokens": { "markdown": 550, "slim": 480 }, "version": 1 }