Vault MCP
Let Claude or Cursor call paid APIs and log into services without ever reading your raw API keys or passwords in the chat context.
Overview
Vault MCP is a MCP server for the Ship phase that lets coding agents use passwords and API keys through tools without exposing secret values in the conversation.
What is this MCP server?
- MCP stdio server (npm chillai-vault-mcp v0.2.1) for credential isolation between agent and secret material
- Agents invoke tools that use passwords and API keys without those values appearing in prompts or tool returns
- stdio transport fits Claude Code, Cursor, and other local MCP hosts
- Reduces accidental secret leakage in logs, screenshots, and shared transcripts
- Pairs with any integration-heavy build where the agent needs authenticated actions
- Server version 0.2.1 on npm identifier chillai-vault-mcp
- stdio MCP transport
- Repository: github.com/Chill-AI-Space/vault-mcp
Community signal: 1 GitHub stars.
What problem does it solve?
Every time you paste a Stripe or AWS key into an agent thread, you risk leaks in history, exports, and support tickets.
Who is it for?
Indie builders running Claude Code or Cursor against production APIs who refuse to keep copying secrets into prompts.
Skip if: Teams that only use mock keys in local dev or who already enforce a full enterprise secrets manager with no agent access.
What do I get? / Deliverables
After you wire Vault MCP into your host, agents can perform authenticated tasks while secrets stay outside model-visible context.
- stdio MCP server registered in your agent config
- Tool calls that authenticate without surfacing raw secrets in context
- Lower risk of accidental credential exposure in agent sessions
Recommended MCP Servers
Journey fit
How it compares
MCP secrets broker, not a password manager UI or a generic cloud vault product.
Common Questions / FAQ
Who is Vault MCP for?
Solo and small-team builders who use MCP-enabled agents and need API keys and passwords used safely during ship and operate work.
When should I use Vault MCP?
Use it when you are wiring real credentials into agent workflows during security prep, integrations testing, or production operations.
How do I add Vault MCP to my agent?
Install the npm package chillai-vault-mcp, add a stdio MCP server entry in Claude Code or Cursor, and configure your tools to resolve secrets through the vault server.