Developers and AI agents
PeptideClear Data API
PeptideClear publishes its factual UK peptide seller data as a read-only public API and as an MCP server for AI clients. The data is the same one behind the UK Peptide Retailer CoA Trust Index: corporate identity, regulatory-status descriptors, and Certificate-of-Analysis (COA) verification signals (per-batch publishing, named third-party lab, QR-verifiable, CoA Trust Index tier). No authentication, no personal data, released under CC BY 4.0.
What this API is, and is not
This API provides factual catalogue and verification data only: who a seller is, how their corporate registration reads, and how they handle Certificates of Analysis. It contains no prices, no efficacy claims, no dosing data, and no health-outcome assertions. Nothing in this API is medical advice, and nothing in it is a recommendation to use any substance. Research peptides are sold for research use only. Always consult a qualified prescriber about any medication.
REST endpoints
Base URL https://peptideclear.co.uk/api. All responses are JSON with open CORS, an ETag and edge caching. Full machine-readable contract: OpenAPI 3.1 spec.
| Method | Path | Description |
|---|---|---|
| GET | /api/sellers | List all tracked UK peptide sellers with COA verification data. Optional filters: ?q=, ?category=, ?coa_tier=green, ?per_batch_coa=true. https://peptideclear.co.uk/api/sellers?category=research-peptide-retailer |
| GET | /api/sellers/{slug} | Verification record for one seller: corporate identity, regulatory status and Certificate-of-Analysis signals. https://peptideclear.co.uk/api/sellers/pure-peptides-uk |
| GET | /api/coa-snapshot | Aggregate COA verification snapshot: counts of UK research-peptide sellers by CoA Trust Index tier, per-batch publishing and named lab. https://peptideclear.co.uk/api/coa-snapshot |
MCP server
The same data is exposed as a remote Model Context Protocol server over streamable HTTP, so MCP-capable AI clients can read it directly.
- Endpoint:
https://peptideclear.co.uk/mcp(JSON-RPC 2.0, POST) - Manifest: /.well-known/mcp.json
- Resources:
pc://dataset,pc://coa-snapshot,pc://sellers/{slug} - Tool:
search_sellers(query?, category?, coa_tier?, per_batch_coa_only?)
Terms
Read-only and free under CC BY 4.0: attribute PeptideClear and link back to the CoA Trust Index. Every field originates in our published seller dataset, or is computed deterministically from our published CoA scoring methodology. CoA Trust Index tiers are editorial commentary on observable verification signals, not a safety or efficacy judgement. Please cache responses and avoid abusive request rates.