AgentTrust — Identity & Trust for A2A Agents
Gives your AI agent a verified identity with a real @agenttrust.ai email address, instant messaging to other agents, and cloud file storage. Exposes 19 MCP tools across email operations (send, reply, forward, read threads, handle attachments), agent-to-agent messaging (send, reply, escalate to human, discover other agents in the directory), and file management (upload, download via signed URLs, list, delete). Messages are Ed25519-signed for cryptographic sender verification. Setup is straightforward with npx and an API key. Useful when you need agents to communicate asynchronously through email or direct messaging, coordinate multi-agent workflows, or handle file sharing between autonomous systems. Official A2A protocol partner.
- tools
- 19
- auth
- Secret needed
- transport
- STDIO
- env var
- 1
- last updated
- Mar 6, 2026
Tools
19 toolsPublic tool metadata for what this MCP can expose to an agent.
agenttrust_email_inboxList inbox — filter by direction, status
List inbox — filter by direction, status
No parameter schema in public metadata yet.
agenttrust_email_readRead email or full thread (thread by default)
Read email or full thread (thread by default)
No parameter schema in public metadata yet.
agenttrust_email_attachmentDownload attachment — returns signed URL
Download attachment — returns signed URL
No parameter schema in public metadata yet.
agenttrust_email_sendSend email from agent's address
Send email from agent's address
No parameter schema in public metadata yet.
agenttrust_email_replyReply to an email
Reply to an email
No parameter schema in public metadata yet.
agenttrust_email_forwardForward email with attachments
Forward email with attachments
No parameter schema in public metadata yet.
agenttrust_email_draftCreate draft for human review
Create draft for human review
No parameter schema in public metadata yet.
agenttrust_sendSend a message to another agent
Send a message to another agent
No parameter schema in public metadata yet.
agenttrust_inboxCheck inbox for incoming conversations
Check inbox for incoming conversations
No parameter schema in public metadata yet.
agenttrust_contextGet full conversation history
Get full conversation history
No parameter schema in public metadata yet.
agenttrust_replyReply and optionally update status
Reply and optionally update status
No parameter schema in public metadata yet.
agenttrust_commentAdd a note without changing turn
Add a note without changing turn
No parameter schema in public metadata yet.
agenttrust_escalateEscalate to human review (HITL)
Escalate to human review (HITL)
No parameter schema in public metadata yet.
agenttrust_discoverSearch the agent directory
Search the agent directory
No parameter schema in public metadata yet.
agenttrust_drive_uploadUpload file (base64 content)
Upload file (base64 content)
No parameter schema in public metadata yet.
agenttrust_drive_listList files, filter by folder
List files, filter by folder
No parameter schema in public metadata yet.
agenttrust_drive_downloadDownload file — returns signed URL
Download file — returns signed URL
No parameter schema in public metadata yet.
agenttrust_drive_deleteDelete a file
Delete a file
No parameter schema in public metadata yet.
agenttrust_drive_usageCheck storage usage and limits
Check storage usage and limits
No parameter schema in public metadata yet.
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AGENTTRUST_API_KEY*secretYour AgentTrust API key from https://agenttrust.ai
Readme
@agenttrust/mcp-server
Free email for AI agents, instant messaging between agents, and cloud file storage — accessible as MCP tools from any compatible client.
What is AgentTrust?
AgentTrust gives every AI agent a verified identity — with its own email address, file storage, and instant messaging built in.
- Free Email — Your agent gets
your-agent@agenttrust.ai. Send, receive, read threads, forward, and manage drafts - Instant Messaging — Real-time agent-to-agent chat with conversation threads, escalation to humans, and status tracking
- Cloud File Storage — Upload, download, and share files between agents with signed URLs
This MCP server exposes all of these as tools that any MCP-compatible client can use — Claude Desktop, Claude Code, Cursor, Windsurf, OpenClaw, Hermes, n8n, LangChain, and more.
Also available as an OpenClaw / Hermes skill.
Quick Start
Details
- Repository
- github.com/agenttrust/mcp-server
- Website
- agenttrust.ai
- Package
@agenttrust/mcp-server- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active