Open Parliament MCP
A thin MCP connector to UK Parliament's public APIs and Members OData endpoint, providing generic tools to list, describe, and query data sources, with playbooks for procedural guidance.
README
open-parliament-mcp
A thin MCP connector to the UK Parliament's public APIs and the Members OData endpoint. It exposes five generic tools rather than modelling endpoints; the "how to use each source" knowledge lives in playbooks.
Tools
list_apis— list the available Parliament data sources.describe_api(api, detail?, path?)— show a source's endpoints (compact by default;detail:"full"for the raw spec;pathto filter). For the OData source, lists collections / returns$metadata.call_api(api, path, query?)— GET an endpoint and return JSON. The host is fixed by the source id (allowlist); read-only.list_playbooks/get_playbook(name)— procedural advice.
Running
npm install
npm run build
# stdio (Claude Desktop / Claude Code):
MCP_TRANSPORT=stdio node build/index.js
# streamable HTTP (default), port 3401:
node build/index.js
Configuration
| Env var | Default | Purpose |
|---|---|---|
MCP_TRANSPORT |
http |
http or stdio. |
PORT |
3401 |
HTTP port. |
CF_ACCESS_TEAM_DOMAIN, CF_ACCESS_AUD |
(unset) | Enable Cloudflare Access origin verification. |
PLAYBOOKS_REPO |
brynmrgn/open-parliament-mcp |
GitHub repo for live playbooks. |
PLAYBOOKS_REF |
main |
Git ref for playbooks. |
Playbooks are fetched live from the playbooks/ folder of PLAYBOOKS_REPO,
falling back to the copy bundled in the image when GitHub is unreachable.
Data sources
UK Parliament public APIs (read-only, no key required). See list_apis for
the full set. This connector is unaffiliated with UK Parliament; cite results
against the originating API.
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