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Even without Claude or ChatGPT, the Bridger Gateway can be called directly via REST and the standard MCP SDK.
1

Issue an API key

Issue an API key from the admin dashboard. See the API key guide as well.
2

Call the REST API

Call the standard REST endpoints.
REST is for listing, retrieving, registering, and managing tools. Tool execution is done via MCP JSON-RPC tools/call (POST /mcp). See the MCP SDK examples below.
3

MCP SDK integration (Node.js)

To integrate programmatically, use the official MCP SDK.
Install
client.js
4

MCP SDK integration (Python)

You can implement the same flow in Python.
Install
client.py
5

BYOAPI — register your own API (coming soon)

Any API with an OpenAPI spec can be registered as a Bridger tool. (coming soon) See the BYOAPI concept doc for the full flow.
Register an API
Either spec_url (remote spec) or spec_raw (inline spec string) plus name is required. Registration is processed asynchronously and the response returns a job_id. Check progress with GET /api/v1/register/:id/status.

API reference summary

See the API Reference tab for the full spec.