Peer39 External API

aid: peer39-external-api
name: Peer39 External API
description: 'The Peer39 External API manages Custom Categories — contextual targeting and brand-safety
  lists of keywords, URLs, mobile apps or CTV apps — and syncs them to a connected DSP partner. Nine operations
  are known: session login, list/get/create/ full-update/metadata-update/items-update/delete of custom
  categories, and a URL-example prediction preview. Authentication is a session bearer token obtained
  by POSTing a username and password to /api/external/login; the account must carry the "External API"
  and "RTB Buyer" roles, which are granted by a Peer39 integration manager. The API is credential-gated
  and publicly undocumented — Peer39 publishes no API reference page and no OpenAPI. This profile is derived
  from Peer39''s own publicly readable MCP server source plus live probes of the API host, and every path
  under /api/external returns HTTP 401 unauthenticated.'
humanURL: https://app.peer39.com
baseURL: https://app.peer39.com
tags:
- Contextual Targeting
- Brand Safety
- Custom Categories
- AdTech
- DSP
properties:
- type: Authentication
  url: authentication/peer39-authentication.yml
- type: Conventions
  url: conventions/peer39-conventions.yml
- type: ErrorCatalog
  url: errors/peer39-problem-types.yml
- type: DataModel
  url: data-model/peer39-data-model.yml
- type: Lifecycle
  url: lifecycle/peer39-lifecycle.yml
- type: RateLimits
  url: rate-limits/peer39-rate-limits.yml
- type: MCPServer
  url: mcp/peer39-mcp.yml
- type: ToolCrosswalk
  url: mcp/peer39-tool-crosswalk.yml
- type: Login
  url: https://app.peer39.com/login