PepBank

PepBank Peptides API

Identity, briefs, evidence maps and comparison.

Documentation GitHub OpenAPI

Operations 5

3 of 5 operations are conformant: apis.io called them with no credentials and the responses matched this contract. Checked 2026-11-12. how this works · status file

GET /v1/resolve Resolve a peptide name, alias or code to peptide IDs #

GET /v1/briefs/{peptide} Chat-ready summary of one peptide with key findings and citations conformant #

GET /v1/peptides List and filter peptides, with evidence counts per peptide conformant #

GET /v1/compare Compare 2 to 5 peptides side by side #

GET /v1/peptides/{peptide}/evidence-map Checked findings of one peptide, counted by outcome group, class and direction conformant #

Specifications

⚙

OpenAPI

https://artifacts.apis.io/pepbank-io/openapi/pepbank-io-peptides-api-openapi.yml

Schemas & Data

📊

JSONSchema

https://artifacts.apis.io/pepbank-io/json-schema/pepbank-io-peptide-brief-schema.json

📊

JSONSchema

https://artifacts.apis.io/pepbank-io/json-schema/pepbank-io-peptide-search-response-schema.json

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OpenAPI Specification

openapi: 3.2.0
info:
  title: PepBank Peptides API
  version: 1.0.0
  description: 'PepBank is an open, academic-grade database of peptide research. Every finding links to the sentence in the paper that supports it, and every finding has an evidence class: **human**, **animal**, **laboratory** or **predicted**.


    The same operations are available through the hosted MCP server (`/mcp`).


    ## Authentication


    Anonymous requests work with the Visitor quotas. For your own plan and quotas, send an API key: `Authorization: Bearer pepbank_...` or `X-API-Key: pepbank_...`. Create keys on your account page. Never put a key in browser code.


    ## Pagination and completeness


    Searches return a `search_response`. `total_count` is exact. Send `next_cursor` as `cursor` to read the next page, with the same filters. Every page reads the same `data_seq`, so the set does not change while you page. `complete` is true only on the last page, and the last page carries `result_set_hash` (SHA-256 of the ordered result IDs, joined by newline).


    ## Reproducibility


    `query_id` names a normalized query at one `data_seq`. `GET /v1/queries/{query_id}` runs it again and compares the hash. `as_of_seq` reads records as they were at an earlier `data_seq`. `GET /v1/changes` is the change feed.


    ## Data layers


    1. Study results (`/v1/findings`): extracted from papers and checked by code checks and an independent model review (`auto_checked`) or by a reviewer (`human_verified`).

    2. Stored papers (`/v1/publications`): papers without study results carry the notice `contains_unchecked_papers`.

    3. Live search (`/v1/live/publications`): Europe PMC, live. Labeled `live_result_not_checked`. Never mixed with findings.


    ## Errors and limits


    Errors are RFC 9457 problem details (`application/problem+json`) with a stable `code`. Each response that counts against a quota carries `RateLimit-Policy` and `RateLimit` headers (IETF draft-ietf-httpapi-ratelimit-headers-11). A 429 response carries `Retry-After`.


    ## License


    PepBank data is CC BY 4.0. Abstract and quotation text keeps the license of its source. Cite the `data_seq` that you used.


    **Information, not medical advice.** The API never recommends a dose. Doses appear only as studied doses in findings.'
  contact:
    name: PepBank
    url: https://pepbank.io/developers
    email: info@pepbank.io
  license:
    name: API terms; data CC BY 4.0
    url: https://creativecommons.org/licenses/by/4.0/
  x-contract-version: 0.3.0
servers:
- url: https://pepbank.io
  description: Production
security:
- {}
- bearerAuth: []
- apiKeyHeader: []
tags:


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# Full source: https://artifacts.apis.io/pepbank-io/openapi/pepbank-io-peptides-api-openapi.yml