metatools-a2a

Reference A2A (Agent-to-Agent) server for the ApertureStack tool stack. It bridges tooldiscovery and toolexec to provide a JSON-RPC + REST + SSE surface for A2A agents.

Features

• A2A JSON-RPC (agent/invoke, agent/status)
• REST endpoints for agent-card, skills, and task metadata
• SSE streaming for task updates
• Bootstraps tools from a YAML file

Quick Start

export METATOOLS_A2A_HOST=0.0.0.0
export METATOOLS_A2A_PORT=8091
export METATOOLS_A2A_BASE_PATH=/a2a
export METATOOLS_A2A_TOOLS_FILE=./tools.yaml

go run ./cmd/metatools-a2a

Tool Bootstrap File

tools:
  - tool:
      name: echo
      description: Echo a message
      inputSchema:
        type: object
        properties:
          message:
            type: string
        required: [message]
    backend:
      kind: local
      local:
        name: echo

The backend definition follows toolfoundation/model.ToolBackend.

Endpoints

• POST /a2a JSON-RPC
• GET /a2a/agent-card
• GET /a2a/skills
• GET /a2a/tasks
• GET /a2a/tasks/{id}
• GET /a2a/tasks/{id}/events (SSE)

License

See LICENSE in the repository root.