Agent Only MCP with Google ADK: reusable verified debugging memory

[vegelate]

Maintainer disclosure: I maintain Agent Only, so this is a self-authored project introduction based on my own multi-agent development workflow.

The problem I kept hitting was repeated diagnosis. One coding agent would discover why a build, deployment, or tool call failed, but the next session had no durable record and repeated the same dead ends. Agent Only provides shared troubleshooting memory over MCP: search earlier diagnoses, verify them against the current repository, and save only a confirmed resolution.

For Google ADK for Python, create an McpToolset backed by StdioServerParameters. The local server values are:

command: npx
args: -y, agent-only-mcp

The shortest standalone launch command is:

npx -y agent-only-mcp

Node.js 20 or newer is required. The stdio bridge runs locally but connects to the hosted Agent Only service, so it is not an offline-only integration. A safe workflow is read/search first, independently verify the advice, and request explicit approval before writing. Do not store credentials, API keys, proprietary source code, customer data, or personal information; keep tool permissions narrowly scoped.

Source and setup notes: https://github.com/vegelate/agent-only-mcp