Borrowing it
Nothing to install: this file belongs to SSIG-IT/3cx-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/SSIG-IT/3cx-mcp-server/main/CLAUDE.mdgit clone --depth 1 https://github.com/SSIG-IT/3cx-mcp-serverWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/ssig-it/3cx-mcp-server/claude-md)<a href="https://agentmods.dev/instructions/ssig-it/3cx-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/ssig-it/3cx-mcp-server/claude-md.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00737 | $0.00737 |
| Opus 5 | $0.00368 | $0.00368 |
| Sonnet 5 | $0.00147 | $0.00147 |
| Haiku 4.5 | $0.00074 | $0.00074 |
Grade A, and why
3cx-mcp-server CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.
3CX MCP Server
Was ist das?
Ein MCP-Server (Model Context Protocol) in TypeScript, der Claude mit einer 3CX Telefonanlage (V20+) verbindet.
Tech Stack
- TypeScript, Node.js (ESM)
- @modelcontextprotocol/sdk (MCP TypeScript SDK)
- zod (Schema-Validierung)
- Transport: stdio
3CX APIs
- XAPI (Configuration API): https://{FQDN}/xapi/v1/ — OAuth2, OData
- Call Control API: https://{FQDN}/callcontrol/ — REST + WebSocket, Enterprise only
- Legacy WebAPI: https://{FQDN}/webapi/{AccessKey}/ — Statischer Key
Auth
OAuth2 Client Credentials: POST /connect/token mit client_id + client_secret → Bearer Token (60 Min)
Wichtig: Rollen & Berechtigungen
- Dienstprinzipal braucht Rolle Systemeigentümer (System Owner), nicht nur Systemadministrator
- Systemadministrator reicht für: Users, Groups, Trunks, ActiveCalls, SystemStatus, EventLogs, Queues, RingGroups, Contacts
- Systemeigentümer nötig für: ReportCallLogData (Anrufhistorie), ChatHistoryView, Recordings, ScheduledReports (sonst 403)
Ports
- Gehostete Instanzen (*.my3cx.de): Port 443 (Standard-HTTPS)
- Selbst-gehostete Instanzen: typischerweise Port 5001
Verifizierte XAPI Endpoints (V20.0.8.1109)
- GET /SystemStatus — Systemstatus
- GET /Users, GET /Users({Id}), GET /Users(Number='{ext}'), POST /Users, PATCH /Users({Id}), POST /Users/Pbx.BatchDelete
- GET /Users({Id})/ForwardingProfiles — Weiterleitungsprofile
- PATCH /Users({Id}) mit CurrentProfileName — Profil setzen
- GET /Groups, POST /Groups, PATCH /Groups({Id}) — Abteilungen
- GET /Trunks, GET /Trunks({Id}) — SIP-Trunks
- GET /ActiveCalls — Aktive Anrufe
- GET /ReportCallLogData/Pbx.GetCallLogData(...) — Anrufhistorie V20 U6+ (braucht System Owner, liest aus cdr_output)
- GET /CallHistoryView — Nur Alt-Daten vor V20 U6 (cl_*-Tabellen, nicht mehr befüllt nach U6-Upgrade)
- GET /Queues — Warteschlangen
- GET /RingGroups — Ringgruppen
- GET /Contacts — Telefonbuch (supports OData contains() filter)
- GET /EventLogs — System-Ereignisse
Projektstruktur
src/index.ts — Entry, MCP Server Setup src/config.ts — Env-Validierung mit Zod src/auth/token-manager.ts — Token-Lifecycle src/api/xapi-client.ts — XAPI HTTP Client src/tools/*.ts — MCP Tool-Definitionen (system, users, departments, trunks, calls, queues, contacts, extensions, logs, forwarding)
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 7d ago First seen · 58 lines · 737 tokens per session scan A 3855e610e858
3cx-mcp-server CLAUDE.md is an instructions file published in the GitHub repository SSIG-IT/3cx-mcp-server (0 stars, last pushed 5mo ago), licensed MIT. It adds 737 tokens to every session, about $0.0037 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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