Documentation
Bridge to Brands documentation: getting started, authentication, the REST API v1 reference, the MCP server, errors, rate limits and test mode. Every page is also available as Markdown, and all of it as one file at /llms-full.txt.
- Getting started with Bridge to Brands Connect your first brand dealer portal, create an API key and make your first availability call to the Bridge to Brands REST API in a few minutes.
- Authentication: API keys, scopes and OAuth How to authenticate to the Bridge to Brands REST API with bearer API keys and to the MCP server with API keys or OAuth 2.1, plus scopes and brand allowlists.
- REST API v1 reference The Bridge to Brands REST API at https://api.brdg2b.ai/v1: brands, catalog, availability grids, bulk lookup, ship-tos, orders and usage, with conventions and examples.
- MCP server: connect Claude, ChatGPT and other agents Connect Claude Code, Claude.ai, the Claude Messages API or ChatGPT to the Bridge to Brands MCP server at https://mcp.brdg2b.ai/mcp. Auth, tools and setup snippets.
- Errors: problem types and how to handle them Every Bridge to Brands error is RFC 9457 problem+json with a stable type URL. The catalogue of problem types and what to do about each one.
- Rate limits Bridge to Brands v1 rate limits per API key and per account, how 429 and Retry-After work, and why portal-side pacing is separate and not configurable.
- Test mode Test-mode API keys (b2b_test_) hit deterministic fake brand portals: same schemas and errors, zero portal traffic, never billed. Use them in CI and development.
- Changelog What changed in Bridge to Brands: the REST API, the MCP server, brand connectors and this documentation, newest first, with dates.