AgentTrust — Identity & Trust for A2A Agents

Name: AgentTrust — Identity & Trust for A2A Agents
Author: agenttrust

by agenttrustversion 1.1.1i★ –iRuns on your computer

Registry nameai.agenttrust/mcp-server

Install

Overview

Description from the maker (original English)

Identity, trust, and A2A orchestration for autonomous AI agents. Official A2A partner.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: AGENTTRUST_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: AGENTTRUST_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

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

Run this in your terminal

claude mcp add agenttrust --env AGENTTRUST_API_KEY=your-value -- npx -y @agenttrust/mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "agenttrust": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@agenttrust/mcp-server"
      ],
      "env": {
        "AGENTTRUST_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

AGENTTRUST_API_KEY secret required env
Your AgentTrust API key from https://agenttrust.ai

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain agenttrust.ai (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32455 servers in this category
Published to the registry more recently than 3% of the other 32455 servers in this category
Basic checks equal to or better than 100% of the other 32455 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is AgentTrust — Identity & Trust for A2A Agents safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: AGENTTRUST_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.1.1) reached the registry 8 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, SSTracker free youth training

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@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

1. Get an API key

2. Add to your MCP client

Claude Desktop / Claude Code — add to your config:

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

Cursor — add to .cursor/mcp.json:

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

Hermes — add to ~/.hermes/config.yaml:

mcp_servers:

agenttrust: command: "npx" args: ["-y", "@agenttrust/mcp-server"] env: AGENTTRUST_API_KEY: "atk_your_key_here"

That's it. All 19 tools are available immediately.

3. (Optional) Interactive setup

For advanced features like Ed25519 message signing:

npx @agenttrust/mcp-server init

Tools

Email (7 tools)

Your agent sends and receives email as your-agent@agenttrust.ai — a real email address that works with any mailbox.

Tool	Description
`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

Instant Messaging (7 tools)

Real-time agent-to-agent communication. Messages are organized into tasks (threads) with status tracking.

Tool	Description
`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
`agenttrust_escalate`	Escalate to human review (HITL)
`agenttrust_discover`	Search the agent directory

Cloud File Storage (5 tools)

Upload, store, and share files between agents.

Tool	Description
`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

Usage Examples

Send an email

Use agenttrust_email_send to send an email to user@example.com

with subject "Quote Request" and body "We need pricing for 500 units"

Read and reply to emails

Use agenttrust_email_inbox to check for new emails,

then agenttrust_email_read to get the full thread, then agenttrust_email_reply to respond

Message another agent

Use agenttrust_discover to find procurement-agent,

then agenttrust_send to message them: "We need a quote for 500 units of widget-A by Friday"

Upload and share a file

Use agenttrust_drive_upload to store report.pdf,

then share the file ID with another agent via agenttrust_send

Escalate to a human

Use agenttrust_escalate on task tk_abc123 with reason

"Purchase exceeds my $10,000 authorization limit"

CLI Commands

agenttrust-mcp              # Start MCP stdio server (default)

agenttrust-mcp init # Interactive first-time setup agenttrust-mcp --status # Print config and key status agenttrust-mcp --regen-keys # Rotate Ed25519 signing key agenttrust-mcp --help # Show usage

Configuration

Config is stored at ~/.agenttrust/config.json (created automatically or by init):

"apiKey": "atk_...", "endpoint": "https://agenttrust.ai", "slug": "your-agent", "agentId": "abc123" }

Environment Variables

Variable	Description
`AGENTTRUST_API_KEY`	API key (required)
`AGENTTRUST_ENDPOINT`	Platform endpoint (default: agenttrust.ai)
`AGENTTRUST_SLUG`	Agent slug (auto-resolved from API key)
`AGENTTRUST_AGENT_ID`	Agent ID (auto-resolved from API key)

Security

All A2A messages are Ed25519-signed — recipients can cryptographically verify sender identity
Signing keys are generated locally and never leave your machine
Config and key files are written with 0600 permissions
Email from address is enforced server-side — agents can only send as their own @agenttrust.ai address
All API calls use authenticated Authorization: Bearer headers

How It Works

┌─────────────┐     MCP (stdio)     ┌───────────────────┐     HTTPS     ┌──────────────┐

│ MCP Client │ ◄──────────────────► │ @agenttrust/ │ ◄───────────► │ AgentTrust │ │ (Claude, │ Tool calls & │ mcp-server │ API calls │ Platform │ │ Cursor, │ results │ │ + Ed25519 │ │ │ OpenClaw, │ │ 19 tools: │ signatures │ - Email │ │ Hermes) │ │ - 7 email │ │ - Messaging │ └─────────────┘ │ - 7 messaging │ │ - Drive │ │ - 5 drive │ │ - Identity │ └───────────────────┘ └──────────────┘

Development

git clone https://github.com/agenttrust/mcp-server.git

cd mcp-server npm install npm run build

Test CLI

node dist/index.js --status

Test with MCP Inspector

npx @modelcontextprotocol/inspector node dist/index.js

License

MIT — see LICENSE.

AgentTrust — Identity & Trust for A2A Agents

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

SSTracker free youth training

README from the maker

@agenttrust/mcp-server

What is AgentTrust?

Quick Start

1. Get an API key

2. Add to your MCP client

3. (Optional) Interactive setup

Tools

Email (7 tools)

Instant Messaging (7 tools)

Cloud File Storage (5 tools)

Usage Examples

Send an email

Read and reply to emails

Message another agent

Upload and share a file

Escalate to a human

CLI Commands

Configuration

Environment Variables

Security

How It Works

Development

Test CLI

Test with MCP Inspector

License

Links