YAML MCP Server

Example Use Cases

• 1

  Safely execute high-risk operations with explicit multi-step approval.

• 2

  Manage secrets and infrastructure changes with audit and approval workflows.

• 3

  A pluggable, declarative YAML-based MCP server with HTTP and shell approvers.

Description

yaml-mcp-server is a single MCP server designed to safely execute high-risk operations such as managing secrets and infrastructure changes by requiring explicit approval through customizable approver chains. It supports HTTP and stdio transports, ordered approval chains, HTTP executors with webhook callbacks, and strict response contracts. The server uses a YAML-DSL for configuration, enabling flexible tool and resource definitions, and provides health endpoints and idempotency caching for repeated calls. This approach ensures secure, auditable workflows where sensitive data like secrets are never exposed to the model.