Cyanheads MCP server

online · 100% uptime

by cyanheads·io.github.cyanheads/cyanheads-mcp-server·v0.5.0·1 stars

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Fleet discovery for the cyanheads MCP ecosystem — semantic search + install snippets.

A90/100grade A

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Safety scan

A90/100

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Adoption

Growing

1 stars218 downloads/wk

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Cyanheads tools

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How Cyanheads compares

Against every graded Web search MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 90/100; higher than 87% of 3,470 Web search servers
Uptime: 100%; of our recent checks; the typical remote Web search server answers 100%
Response time: 227 ms; faster than 63% of 2,238 Web search servers
GitHub stars: 1; more than 55% of 1,786 Web search servers
Downloads a week: 218; more than 71% of 827 Web search servers with a package

Release history: 6 versions in the registry since 2026-08-21, latest 2026-10-28, typically one every 11 days.

Install Cyanheads in Claude Code, Cursor or VS Code

claude mcp add --transport http cyanheads-mcp-server https://cyanheads.caseyjhand.com/mcp

Add to Cursor

What the publisher says

From the Cyanheads repository's README, as published. We do not edit it. Read it on GitHub

@cyanheads/cyanheads-mcp-server Fleet discovery for the cyanheads MCP ecosystem — semantic search + install snippets. 2 Tools • 0 Resources • 0 Prompts

Public Hosted Server: https://cyanheads.caseyjhand.com/mcp

Overview

Fleet discovery for the cyanheads MCP ecosystem, built on a hosted fleet.json catalog of pre-computed tool and server embeddings. Search the catalog by natural-language query, or resolve a known tool or server name to its description, connection URL, and per-client install snippet. Runs as a stdio process, a local Streamable HTTP server, or the public hosted endpoint above.

Tools

Capability reference

cyanheadssearchcatalog tool

query 1–500 characters; scope selects tools (default) or servers result granularity
Optional category filter: research, government, public-data, utility
limit 1–20 (default 5); results below the SIMILARITY_FLOOR (default 0.3) are dropped before the limit applies
Every result carries score (cosine similarity, [0, 1]), comparable only within one response
For scope tools, a servers roll-up (top 10 by best-matching tool, serversTotal for the full count) summarizes which servers matched
Throws retryable catalog_empty while the catalog is still loading

cyanheadsdescribeentry tool

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Cyanheads: common questions

Is Cyanheads MCP server safe?: Yes, by our scan: it is graded A (90/100). Read the Cyanheads safety report
How do I install Cyanheads?: It runs remotely at cyanheads.caseyjhand.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Cyanheads need an API key?: No secret keys are declared. It reads 17 settings from the environment.
Is Cyanheads maintained?: The last commit was 35 days ago (2026-09-30). The latest release is v0.5.0.
Is Cyanheads up?: 100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Cyanheads?: Servers from other publishers that do the same job: Arxiv MCP server, Socraticode MCP server and Octocode MCP server.
How does Cyanheads compare with other Web search MCP servers?: safety score 90/100 (higher than 87% of 3,470 Web search servers); uptime 100% (of our recent checks; the typical remote Web search server answers 100%); response time 227 ms (faster than 63% of 2,238 Web search servers). Full comparison.

Alternatives to Cyanheads

Same job from other publishers: the closest match first, then the best rated.

Arxiv
Search arXiv papers, download full text, semantic search, citation graphs, and alerts via MCP.
not reviewed
Widely used
A
Socraticode
MCP server for enterprise local codebase indexing, semantic search, and code dependency graphs.
not reviewed
Established
B
Octocode
AI-powered code indexer with semantic search and knowledge graphs
More from Muvon →
not reviewed
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A
Sui Knowledge Base (kapa.ai)
Semantic search across Sui documentation and knowledge sources, powered by kapa.ai
not reviewed
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A
Marm
Universal MCP Server with advanced AI memory capabilities and semantic search.
not reviewed
Established
A

Run it through the gateway

With the gateway added, ask your agent for it by name:

agent prompt

call io.github.cyanheads/cyanheads-mcp-server → <tool>

Free per call. Metered, capped by your key, logged for reliability.

Add the gateway (gw.mcp.market)

Rating: —
Safety grade: A · 90/100
Stars: 1
Downloads/wk: 218
Price: Free
Licence: Apache-2.0
Transport: Remote · mixed
Uptime: 100% · 28/28 checks
Version: 0.5.0
Category: Web search
Last release: 2026-09-30

Credentials it needs

MCP_LOG_LEVELMinimum log level: debug, info, notice, warning, error.
CATALOG_URLRemote fleet.json endpoint (schema v2 with baked embeddings).
CATALOG_FETCH_TIMEOUT_MSPer-request timeout for fleet.json fetches: integer milliseconds from 1 to 2147483647.
CATALOG_REFRESH_SECONDSBackground poll interval for fleet.json refreshes in seconds. 0 disables refresh; positive values up to 2147483.647 use the runtime's millisecond timer resolution.
EMBEDDING_MODEL_IDHugging Face model id for query embedding. Must match fleet.json.embeddingModel.
SIMILARITY_FLOORCosine similarity cutoff for cyanheads_search_catalog results. Must be within [0, 1].
MCP_TRANSPORT_TYPESelects the HTTP transport.
MCP_HTTP_HOSTHostname for the HTTP server.
MCP_HTTP_PORTPort to run the HTTP server on.
MCP_HTTP_ENDPOINT_PATHEndpoint path for the MCP server.
MCP_AUTH_MODEAuthentication mode: none, jwt, or oauth.
MCP_LOG_LEVELMinimum log level: debug, info, notice, warning, error.
CATALOG_URLRemote fleet.json endpoint (schema v2 with baked embeddings).
CATALOG_FETCH_TIMEOUT_MSPer-request timeout for fleet.json fetches: integer milliseconds from 1 to 2147483647.
CATALOG_REFRESH_SECONDSBackground poll interval for fleet.json refreshes in seconds. 0 disables refresh; positive values up to 2147483.647 use the runtime's millisecond timer resolution.
EMBEDDING_MODEL_IDHugging Face model id for query embedding. Must match fleet.json.embeddingModel.
SIMILARITY_FLOORCosine similarity cutoff for cyanheads_search_catalog results. Must be within [0, 1].

Endpoint

https://cyanheads.caseyjhand.com/mcp

streamable-http

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