A2A MCP Server

Enables Claude to connect and interact with A2A Protocol agents, allowing discovery of agent capabilities, sending messages to remote agents, managing multi-turn conversations, and viewing artifacts returned by agents.

→ a2anet/a2a-mcp · listed on glama

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configA2A_MCP_AGENT_CARDS— "": "{\"tweet-search\": {\"url\": \"https://example.com/.well-known/agent-card.json\"}}"

configA2A_MCP_SEND_MESSAGE_CHARACTER_LIMIT— 50000 Character limit for artifact minimization in send_message

configA2A_MCP_MINIMIZED_OBJECT_STRING_LENGTH— 5000 Max string length when minimizing objects

configA2A_MCP_VIEW_ARTIFACT_CHARACTER_LIMIT— 50000 Character limit for view_text_artifact / view_data_artifact

configA2A_MCP_AGENT_CARD_TIMEOUT— 15 Timeout in seconds for fetching agent cards

configA2A_MCP_SEND_MESSAGE_TIMEOUT— 60 Timeout in seconds for send_message

configA2A_MCP_GET_TASK_TIMEOUT— 60 Timeout in seconds for get_task

configA2A_MCP_GET_TASK_POLL_INTERVAL— 5 Interval in seconds between get_task polls

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 1 concrete improvement we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/a2anet-a2a-mcp-1bsc7v)](https://m8ven.ai/mcp/a2anet-a2a-mcp-1bsc7v)

commit: 26791b781c1c8d77a8fb420c5aa0e10cfc46011c

code hash: d7106e8dfa09583c87cb67749fa89f2c04996f5a6acda5733fa9e8f4e9213caf

verified: 6/18/2026, 10:39:50 AM

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