Peptide Library MCP

An official read-only MCP server that integrates Peptide Library's curated research data into AI assistants. It provides tools to search peptides, retrieve detailed research profiles with evidence tiers, compare peptides side-by-side, and access educational content. The server ensures all answers are grounded in cited sources from Peptide Library's editorial policy, focusing on research and educational use without providing medical advice or dosing instructions.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-18Operated by Peptide Library

MCP endpoint (Streamable HTTP)

https://peptidelibrary.app/mcp

Vendor documentation

What you can do with it

Search peptides by name or synonym with research category filters
Retrieve detailed peptide profiles including mechanism, targets, and evidence tiers
Compare multiple peptides side-by-side on structured fields
Search educational content like FAQs and articles

Tools advertised by the last live check:

search_peptides
get_peptide_details
compare_peptides
search_research
get_peptide_categories
get_research_trends
convert_units
solution_concentration
blend_concentrations
cost_per_amount

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http peptide-library-mcp https://peptidelibrary.app/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add peptide-library-mcp --url https://peptidelibrary.app/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable peptide-library-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "peptide-library-mcp": {
      "url": "https://peptidelibrary.app/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "peptide-library-mcp": {
      "type": "streamableHttp",
      "url": "https://peptidelibrary.app/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start peptide-library-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "peptide-library-mcp": {
      "type": "http",
      "url": "https://peptidelibrary.app/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http peptide-library-mcp https://peptidelibrary.app/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "peptide-library-mcp": {
      "url": "https://peptidelibrary.app/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "peptide-library-mcp": {
      "serverUrl": "https://peptidelibrary.app/mcp"
    }
  }
}

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