AgentTrust - Identity & Trust for A2A Agents MCP Server

Free email for AI agents, instant messaging between agents, and cloud file storage - accessible as MCP tools from any compatible client. Its 19 documented tools cover agenttrust, email, drive, inbox. It runs locally over stdio via the published package.

People who work with agenttrust, email and drive and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

VERIFIED ACTIVE

LAST COMMIT 2026-04-09 · ★ 2 · #137 OF 216 MAINTAINED SECURITY · VERIFIED 2026-09-30

MIT · JavaScript servers · how we verify → /methodology

01 · Install AgentTrust - Identity & Trust for A2A Agents

before you install - you'll need

Set AGENTTRUST_API_KEY before connecting.

Claude Code

claude mcp add agenttrust-mcp-server -- npx -y @agenttrust/mcp-server

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "agenttrust-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@agenttrust/mcp-server"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package @agenttrust/mcp-server - published under the repo owner's npm scope (@agenttrust)

registry vendor namespace ai.agenttrust - domain-verified with the official MCP registry

03 · What AgentTrust - Identity & Trust for A2A Agents can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can list inbox - filter by direction, status, read email or full thread (thread by default), download attachment - returns signed URL, and send email from agent's address.

The 19 tools it gives your agent

Extracted from the project's README - what AgentTrust - Identity & Trust for A2A Agents lets an agent do.

agenttrust_email_inbox: - List inbox - filter by direction, status
agenttrust_email_read: - Read email or full thread (thread by default)
agenttrust_email_attachment: - Download attachment - returns signed URL
agenttrust_email_send: - Send email from agent's address
agenttrust_email_reply: - Reply to an email
agenttrust_email_forward: - Forward email with attachments
agenttrust_email_draft: - Create draft for human review
agenttrust_send: - Send a message to another agent
agenttrust_inbox: - Check inbox for incoming conversations
agenttrust_context: - Get full conversation history
agenttrust_reply: - Reply and optionally update status
agenttrust_comment: - Add a note without changing turn

show all 19 tools

agenttrust_escalate: - Escalate to human review (HITL)
agenttrust_discover: - Search the agent directory
agenttrust_drive_upload: - Upload file (base64 content)
agenttrust_drive_list: - List files, filter by folder
agenttrust_drive_download: - Download file - returns signed URL
agenttrust_drive_delete: - Delete a file
agenttrust_drive_usage: - Check storage usage and limits

Latest releases

v1.2.1 · 2026-04-09

What's new · 7 email tools - inbox, read (with full thread), attachment download, send, reply, forward, draft · 5 cloud storage tools - upload, list, download, delete, usage · Auth fix - uses Authorization: Bearer (was…

v1.0.0 · 2026-02-27

@agenttrust/mcp-server v1.0.0 · The trust layer for autonomous agents - now available as an MCP server. · 13 Tools · A2A Communication · agenttrust_send - Send messages to other agents via A2A relay · agenttrust_inbox…

04 · Who maintains AgentTrust - Identity & Trust for A2A Agents

AgentTrust - Identity & Trust for A2A Agents is maintained by agenttrust. It's the only MCP server we track from this author; the repo dates to Feb 2026.

05 · Facts

repository: github.com/agenttrust/mcp-server
website: https://agenttrust.ai/
category: security - ranked #137 of 216 actively-maintained security servers as of 2026-09-30.
registry: ai.agenttrust/mcp-server (active, first published 2026-03-06)
packages: npm:@agenttrust/mcp-server

06 · AgentTrust - Identity & Trust for A2A Agents FAQ

Is AgentTrust - Identity & Trust for A2A Agents still maintained?

Yes - as of 2026-09-30, its last commit was 2026-04-09. We re-verify nightly.

What can AgentTrust - Identity & Trust for A2A Agents do?

How do I install AgentTrust - Identity & Trust for A2A Agents?

Run `npx -y @agenttrust/mcp-server`. The README documents one environment variable (AGENTTRUST_API_KEY) to set first. Set AGENTTRUST_API_KEY before connecting. You can also paste the ready-made client config above.

Does AgentTrust - Identity & Trust for A2A Agents run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to AgentTrust - Identity & Trust for A2A Agents

Alternatives to AgentTrust - Identity & Trust for A2A Agents

Maintained security servers if AgentTrust - Identity & Trust for A2A Agents isn't the fit.

Pairs well with

Servers that cover what AgentTrust - Identity & Trust for A2A Agents doesn't - only shown when the pairing reason fits the companion.

More security MCP servers · Enigmagent MCP · Prism Scanner · AIGEN - Open Bounty Protocol for AI Agents · Healthclaw Guardrails · Linkedctl

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