Docs

Consumer quickstart

Open the catalog and pick an API.
Sign in from the dashboard (GitHub OAuth, or Dev sign-in when enabled).
Create an app → mint a key → subscribe Free.
Call the gateway with your hub key:

curl -sS "https://gateway.apibroker.dev/v1/finance/v1/health" \
  -H "X-ApiBroker-Key: apb_…"

Hosts and headers

Path-style: https://gateway.apibroker.dev/v1/{slug}/…
Host-style: https://{slug}.p.apibroker.dev/… (same key header)
Key header: X-ApiBroker-Key: apb_…

Error codes

Code	Meaning
`401`	Missing or invalid hub key
`403`	No active subscription / not entitled for this listing
`429`	Quota or rate limit exceeded for the plan
`502`	Origin upstream error or unreachable through the gateway

MCP

Tool discovery and invoke live on the MCP worker. Authenticated tool calls use POST /v1/mcp with X-ApiBroker-Key (see mcp.apibroker.dev). Public lists: GET /v1/tools and GET /v1/registry.

Providers

To publish your own OpenAPI-backed API, use Provider Studio — create a draft, submit for review, and await curated approval.