Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Peptide Library MCP Server compare semaglutide and tirzepatide: mechanism, evidence and FDA status"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
A remote Model Context Protocol server providing structured peptide research information, educational comparison tools, and research resources for compatible AI assistants.
Website: https://peptidelibrary.app
Server URL: https://peptidelibrary.app/mcp
Documentation: https://peptidelibrary.app/developers/mcp
The server is hosted by Peptide Library. It is free, anonymous and read-only: no account, no API key and nothing to install. This repository holds its public documentation, client configuration examples and registry metadata; the server itself runs from Peptide Library's private codebase.
Tool | Description |
| Fuzzy search by name, synonym or alias, with research-category and research-area filters and pagination |
| Research profile: classification, mechanism and targets, evidence by tier (regulatory label, controlled human trials, other human studies, animal and in-vitro research) with cited sources, safety, FDA/WADA status, review dates |
| Side-by-side comparison of 2 or 3 profiles on structured fields; never ranks |
| Search Peptide Library's FAQ, per-peptide FAQs, articles and courses, with links |
| Research categories with descriptions, counts and member profiles |
| This week's most-researched peptides in the community, as percentages |
| mg ↔ mcg, and IU only with a peptide's documented IU-per-mg factor |
| Amount ÷ volume as mg/mL, mcg/mL (IU/mL with a documented factor) |
| Per-component concentration and share in one volume |
| Total cost and cost per mg/mcg/IU from a price you enter |
Resources: peptidelibrary://categories, peptidelibrary://evidence-levels, peptidelibrary://methodology, peptidelibrary://glossary, peptidelibrary://disclaimer, peptidelibrary://peptide/{id}.
Prompts: compare_peptide_research, summarize_peptide_evidence, explain_mechanism, find_research_topics, understand_research_limitations.
Every result includes the Peptide Library URL it came from and a research-use disclaimer. Fields the library doesn't have are returned as not_documented.
Give doses, regimens, cycles, reconstitution or injection instructions.
List vendors, prices or purchase links.
Read or change any account or personal data.
Rank peptides or invent studies or citations.
Research and educational use only. Not medical advice. Peptide Library does not sell peptides.
Related MCP server: Vocaneo MCP Server
Customize → Connectors → Add custom connector → name Peptide Library, URL https://peptidelibrary.app/mcp. On Team and Enterprise plans an owner adds it under Organization settings → Connectors. Free plans allow one custom connector.
claude mcp add --transport http peptide-library https://peptidelibrary.app/mcpWhere your plan or workspace allows custom MCP servers: Plugins → + → Add custom MCP server → URL https://peptidelibrary.app/mcp, Authentication No authentication → Create as a plugin. Then type @ in a chat to use it. See examples/chatgpt.md.
~/.cursor/mcp.json (or .cursor/mcp.json in a project): examples/cursor-mcp.json
{ "mcpServers": { "peptide-library": { "url": "https://peptidelibrary.app/mcp" } } }.vscode/mcp.json: examples/vscode-mcp.json
Streamable HTTP at https://peptidelibrary.app/mcp, no authentication. Generic config: examples/mcp.json.
npx -y @modelcontextprotocol/inspector --cli https://peptidelibrary.app/mcp --transport http --method tools/listWhat does the research say about BPC-157, and how much of it is in humans?
Compare semaglutide and tirzepatide: mechanism, evidence and regulatory status.
Which peptides in the library are studied for cognition?
What is the FDA and WADA status of bremelanotide (PT-141)?
If 10 mg is dissolved in 2 mL, what is the concentration in mcg/mL?
Transport: Streamable HTTP (POST), stateless. Protocol revision 2026-07-28 and 2025-era clients (2024-11-05 to 2025-11-25).
Authentication: none; every tool is read-only (readOnlyHint: true).
Limits: about 300 requests per minute per IP, 64 KB per request, 25 results per page.
Health check: GET https://peptidelibrary.app/mcp/health.
No account and no personal data. Peptide Library keeps daily counts of requests, tool calls, errors and the client name your assistant reports; it does not store tool arguments, results or IP addresses. The hosting provider processes IPs to apply rate limits. Full policy: https://peptidelibrary.app/privacy#mcp-server
Profiles follow Peptide Library's editorial policy and methodology: claims cite PubMed, DOI, trial registries and FDA or WADA records, and evidence is labelled by kind.
Website: https://peptidelibrary.app
iOS app: https://apps.apple.com/us/app/peptide-library-peptide-log/id6755092737
Android app: https://play.google.com/store/apps/details?id=com.peptidelibrary.app
Support: https://peptidelibrary.app/support · support@peptidelibrary.app
Security: SECURITY.md
Documentation and examples in this repository: MIT. The hosted service and Peptide Library content are subject to the terms of service.
This server cannot be deployed
Read-only AI impact metrics with search, methodology and cited sources. No authentication required.
Evidence-ranked supplement data: search, compare, price history, goal recs. No API key.
Read-only approved AI tools, public stacks, guides, and evidence-aware comparisons.
Live research peptide prices, price history, vendor trust records and a reconstitution calculator.
