placetel-web-api-mcp-server

MCP (Model Context Protocol) server exposing the complete Placetel Web API v2 — all 124 endpoints as individual, well-annotated tools. Built with the MCP TypeScript SDK (registerTool), Zod validation, and a shared axios client with automatic rate-limit (HTTP 429 / Retry-After) handling.

• Base URL: https://api.placetel.de/v2
• Auth: Bearer token via PLACETEL_API_KEY
• Transport: stdio (local server for Claude Desktop / Claude Code)

Tool catalog (124 tools)

Tools are named placetel_<verb>_<resource> (snake_case). Read-only tools carry readOnlyHint, deletes carry destructiveHint. Full table with methods, paths and annotations: docs/BUILD-PLAN.md.

Domain	Tools	Domain	Tools
AI	1	Prompts	5
Call Center	8	Provisionings	9
Call detail records	1	Recordings	3
Calls	4	Routing plans (+objects)	7
Contacts	5	Routings	5
CTI	15	Sip Users	8
Devices	1	SIM Cards	2
Faxes	4	Sites	2
Groups	5	SMS	1
Microsoft Teams	5	Subscriptions	3
Numbers	8	Webex	14
Users (incl. /me)	8	Total	124

Every data tool accepts response_format (markdown default, or json). List tools accept page / per_page (note: not every endpoint honors per_page; Placetel list endpoints return bare arrays, so has_more is a heuristic).

Setup

npm install
cp .env.example .env        # then put your Placetel API key into .env
npm run build

.env:

PLACETEL_API_KEY=your_api_key_here

Get your key at https://web.placetel.de/integrations/web_api. Never commit .env — it is gitignored.

Run

npm start          # runs dist/index.js over stdio
npm run smoke      # starts the server, lists tools, prints TOOL_COUNT

Register in an MCP client (e.g. Claude Desktop / Claude Code)

Using the published npm package (no local checkout needed):

{
  "mcpServers": {
    "placetel": {
      "command": "npx",
      "args": ["-y", "placetel-web-api-mcp-server"],
      "env": { "PLACETEL_API_KEY": "your_api_key_here" }
    }
  }
}

The env value may reference an existing OS environment variable, e.g. "PLACETEL_API_KEY": "${MY_PLACETEL_KEY}".

Alternatively point at a local build with "command": "node" and "args": ["<absolute-path>/dist/index.js"].

Development

npm run dev        # tsx watch on src/index.ts
npm run build      # tsc -> dist/

• src/index.ts — entry point, registers all tool modules, connects stdio.
• src/services/ — shared client, error mapping, pagination, formatting.
• src/tools/ — one module per API domain (contacts.ts is the hand-written reference; the rest are generated to the same pattern from the Swagger spec).
• evaluation.xml — 10 read-only QA pairs (mcp-builder Phase 4).

Notes & limits

• CTI, Webex, Microsoft Teams and SIM-card tools require the corresponding Placetel add-on products / real devices; they are implemented and type-checked but may not be exercisable on every account.
• Error messages are actionable (401 → check key, 404 → check id, 422 → validation detail, 429 → rate limited).

Releasing

Publishing to npm is automated via GitHub Actions (.github/workflows/publish.yml) and runs when a GitHub Release is published:

1. Bump the version and update CHANGELOG.md: npm version patch|minor|major
2. Push the tag: git push --follow-tags
3. Publish a GitHub Release for that tag: gh release create vX.Y.Z --generate-notes

The workflow then builds and runs npm publish --provenance. It requires the repository secret NPM_TOKEN — an npm Automation token (Access Tokens → Classic → Automation), which bypasses 2FA. A plain repo push does not republish npm; only a new release with a bumped version does.