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elba-mcp-server: Instructions file for Claude Code

CLAUDE.md

elba-mcp-server CLAUDE.md is an instructions file for Claude Code from Kolsetu-Opensource/elba-mcp-server. It costs 479 tokens per session, scanned A, original, MIT.

An MCP server that connects AI assistants to Elba, a platform for building voice-based AI agents.

In plain words
What is it for?
Use it to list agents or voices and create or update voice AI agents through Elba's API.
Why use it?
It provides a standard way for coding tools to view available agents and voices and send agent changes to Elba.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is Kolsetu-Opensource/elba-mcp-server's own configuration. It tells Claude Code how to work on elba-mcp-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything elba-mcp-server configures →

not rated 3repo 4d ago A scan 479 tokens original MIT
View source ↗ Kolsetu-Opensource/elba-mcp-server elba.kolsetu.com
Reuse

Borrowing it

Nothing to install: this file belongs to Kolsetu-Opensource/elba-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.

Copy the file
curl -O https://raw.githubusercontent.com/Kolsetu-Opensource/elba-mcp-server/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/Kolsetu-Opensource/elba-mcp-server

Made for: Claude Code.

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Per session 479 This file is loaded in full into every session.
When invoked 479 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00479 $0.00479
Opus 5.5 $0.00192 $0.00192
Sonnet 5.5 $0.00096 $0.00096
Haiku 4.5 $0.00048 $0.00048

Measured 2mo ago against content hash d7153e93882c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

elba-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 2mo 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.

CLAUDE.md · 48 lines

What it actually says

CLAUDE.md

This file provides context for AI assistants working on this codebase.

Project Overview

This is an open-source MCP (Model Context Protocol) server for Elba, a voice AI agent platform. It exposes Elba's agent lifecycle as MCP tools callable from any MCP-compatible client (Claude Code, Cursor, VS Code, etc.).

Current Status

Phase 1 tools are implemented and wired into the server:

  • list_agents — lists all agents in the organization
  • list_voices — lists available voices
  • upsert_agent — creates or updates a voice AI agent

Auth validation (src/auth.ts) checks token format (must start with elba_). Full token validation happens server-side via the Elba API.

Architecture

  • Thin client pattern: The MCP server is a thin wrapper around Elba's backend API. All business logic lives in the Elba platform — this server just translates MCP tool calls into API requests.
  • Authentication: Uses integration tokens (ELBA_INTEGRATION_TOKEN env var) validated against the Elba backend on every tool call.
  • Transport: stdio (local) by default. The server is started by the MCP client process.

Key Files

  • src/index.ts — CLI entry point (shebang, starts server)
  • src/server.ts — MCP server initialization, tool registration
  • src/auth.ts — Token validation against Elba backend
  • src/tools/ — One file per MCP tool
  • __tests__/ — Mirrors src/ structure, uses vitest

Commands

  • npm run build — Compile TypeScript to dist/
  • npm run dev — Run server in development mode (tsx)
  • npm test — Run tests (vitest)
  • npm run lint — ESLint
  • npm run typecheck — TypeScript type checking
  • npx changeset — Create a changeset for version bumping

Conventions

  • ESM only ("type": "module" in package.json)
  • Imports use .js extensions (NodeNext module resolution)
  • One tool per file in src/tools/
  • Tests mirror source structure in __tests__/
  • All tools validate auth before executing
Changes

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.

  1. 2mo ago First seen · 48 lines · 479 tokens per session scan A d7153e93882c

Subscribe to this mod's changes

elba-mcp-server CLAUDE.md is an instructions file published in the GitHub repository Kolsetu-Opensource/elba-mcp-server (3 stars, last pushed 4d ago), licensed MIT. It adds 479 tokens to every session, about $0.0019 per session on Opus 5.5. 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.

Building agentsTypeScriptai-agentselbamcpmodel-context-protocolvoice ai
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