Attestify OS
MCP stdio server for Attestify OS — governed agent execution and Attestify Trust signed evidence.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
attestify-mcpclaude mcp add attestify-os -e 'ATTESTIFY_BASE_URL=https://attestifyos.com' -e 'ATTESTIFY_API_KEY=<your attestify_api_key>' -e 'TRUST_AGENT_ID=<TRUST_AGENT_ID>' -e 'TRUST_PRIVATE_KEY=<your trust_private_key>' -- npx -y attestify-mcp@0.2.1
{
"mcpServers": {
"attestify-os": {
"command": "npx",
"args": [
"-y",
"attestify-mcp@0.2.1"
],
"env": {
"ATTESTIFY_BASE_URL": "https://attestifyos.com",
"ATTESTIFY_API_KEY": "<your attestify_api_key>",
"TRUST_AGENT_ID": "<TRUST_AGENT_ID>",
"TRUST_PRIVATE_KEY": "<your trust_private_key>"
}
}
}
}
Environment variables
ATTESTIFY_BASE_URLBase URL of the deployed Attestify app.ATTESTIFY_API_KEYsecret Tenant API key issued via POST /api/keys, sent as X-API-Key on /api/run calls.TRUST_AGENT_IDAttestify Trust agent ID, from a one-time `npx attestify trust-init` run. Enables attestify_trust_submit_evidence and attestify_trust_verify.TRUST_PRIVATE_KEYsecret That agent's Ed25519 private key (base64url), from the same trust-init run. Never leaves this server except as a signature.
Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
attestify-mcp
MCP server exposing Attestify OS agents — and Attestify Trust's no-wallet agent identity + signed evidence — as callable tools for Claude Desktop, Cursor, Windsurf, and any MCP-compatible host.
Attestify OS is infrastructure for AI agents operating in financial, compliance, and regulated workflows. Every governed run delivers: routing → governance enforcement → budget check → SLA check → execution → output verification → immutable receipt → on-chain settlement evidence.
Live base URL: https://attestifyos.com
This package is a real Model Context Protocol stdio server — your MCP host spawns it as a subprocess and talks JSON-RPC to it directly. It is not a plain HTTP client library.
Quick start
Add to your MCP host's config (e.g. Claude Desktop's claude_desktop_config.json):
{
"mcpServers": {
"attestify": {
"command": "npx",
"args": ["-y", "attestify-mcp"],
"env": {
"ATTESTIFY_BASE_URL": "https://attestifyos.com",
"ATTESTIFY_API_KEY": "<your-tenant-api-key>",
"TRUST_AGENT_ID": "<optional — see Attestify Trust below>",
"TRUST_PRIVATE_KEY": "<optional — see Attestify Trust below>"
}
}
}
}
ATTESTIFY_API_KEY is a tenant API key issued via POST /api/keys — it's sent as the X-API-Key header on every run. Without one, runs are unauthenticated and subject to the plan/x402 limits that apply to anonymous callers.
TRUST_AGENT_ID / TRUST_PRIVATE_KEY are optional and unlock two more tools — see Attestify Trust below.
Tools
attestify_research
Runs a deep research query through the Attestify Research Agent (researcher-v2) via POST /api/run. Returns a structured briefing with executive summary, key findings, and caveats. Each call is metered at $0.023 USDC and logged to the Attestify evidence ledger.
Arguments:
| Field | Required | Description |
|---|---|---|
query | Yes | The research question, topic, or subject to investigate. |
url | No | Optional source URL to include as context for the research run. |
session_id | No | Optional session ID for conversation continuity. |
Returns: a JSON blob with summary, loop_id, run_id, input_hash, output_hash, price_usdc, agent_id, receipt_url, and created_at.
attestify_trust_submit_evidence / attestify_trust_verify
Available whenever TRUST_AGENT_ID and TRUST_PRIVATE_KEY are both set. A separate concern from attestify_research above — no x402, no lanes, no spend, no wallet at any point.
attestify_trust_submit_evidence signs (Ed25519, via Node's built-in node:crypto — no extra dependency) and submits evidence that the agent completed real work, returning a signed, timestamped, publicly verifiable receipt.
| Field | Required | Description |
|---|---|---|
summary | Yes | Plain-language description of the work done. Gets signed and permanently recorded. |
schema | No | Evidence schema version. Default work-completion/v1. |
action_basis | No | explicit (default) or discretionary. |
attestify_trust_verify independently re-verifies any receipt by ID — public, no API key needed, works for receipts from any agent.
| Field | Required | Description |
|---|---|---|
receipt_id | Yes | The receipt ID to verify. |
Getting TRUST_AGENT_ID / TRUST_PRIVATE_KEY: run this once, outside of any MCP session — never generate a fresh identity per session, it would both break the agent's own verified-active streak and add noise to Attestify's public census instead of a real, citable number:
npx attestify trust-init --name "My MCP Agent"
This registers a free Trust agent, generates its Ed25519 signing key locally, and prints the two values to set in your MCP host's config. The private key never leaves your machine except as a signature.
Enterprise self-serve
Issue a tenant key, set a budget, attach policies — every subsequent run through this server is auto-governed:
1. POST /api/keys → issue tenant API key
2. POST /api/budgets → set USDC spend ceiling
3. POST /api/policies → attach governance rules
4. (this MCP server) → every run auto-enforced
Links
- Homepage: https://attestifyos.com
- Attestify Trust: https://attestifyos.com/trust
- Quickstart: https://attestifyos.com/quickstart
- OpenAPI spec: https://attestifyos.com/openapi.json
- x402 discovery: https://attestifyos.com/.well-known/x402.json
- GitHub: https://github.com/attestifyagent/attestify-mcp
Frequently asked questions
What is Attestify OS?
MCP stdio server for Attestify OS — governed agent execution and Attestify Trust signed evidence.
How do I install Attestify OS?
It runs on your machine. In Claude Code: claude mcp add attestify-os -e 'ATTESTIFY_BASE_URL=https://attestifyos.com' -e 'ATTESTIFY_API_KEY=<your attestify_api_key>' -e 'TRUST_AGENT_ID=<TRUST_AGENT_ID>' -e 'TRUST_PRIVATE_KEY=<your trust_private_key>' -- npx -y attestify-mcp@0.2.1. For other clients, paste the JSON configuration from this page into their MCP settings.
Does Attestify OS need an API key?
Yes. It expects ATTESTIFY_API_KEY, TRUST_PRIVATE_KEY, which you set in its configuration.
Is Attestify OS open source?
Its code is public on GitHub, but the repository does not declare a standard license.
Who maintains Attestify OS?
It is published by attestifyagent. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.