TrustAtom MCP Server

Cryptographic receipts for AI decisions. 5 minutes to your first receipt.

Every AI decision in your org is unsigned — and your auditor is going to ask about it. TrustAtom signs every decision with Ed25519 and returns a verifiable receipt in under 3ms.

Quick Start

git clone https://github.com/CWNApps/trustatom-mcp
cd trustatom-mcp
npm install
npm run keygen    # Generate Ed25519 key pair
npm test          # Run 8 eval tests

Add to Claude Desktop

{
  "mcpServers": {
    "trustatom": {
      "command": "npx",
      "args": ["tsx", "src/server.ts"],
      "cwd": "/path/to/trustatom-mcp",
      "env": { "TRUSTATOM_KEY_PATH": "./keys/trustatom_keys.json" }
    }
  }
}

Then in Claude: "Sign this AI decision with TrustAtom" → receipt issued automatically.

What It Does

Tool	Description	When
`create_trustatom`	Sign a decision, return receipt	At every AI decision point
`verify_trustatom`	Verify an existing receipt	During audit, dispute resolution
`query_receipts`	Query the receipt ledger	Compliance reporting
`get_compliance_report`	Framework-mapped report	Board report, ATO package

Example: Healthcare AI Triage (HIPAA)

You: "Our clinical AI just triaged patient #4422 as ESI-3 with 67% confidence.
      Sign this decision for HIPAA compliance."

Claude (via TrustAtom MCP):
  ✅ Receipt ta_7f3a2b signed in 1.2ms
  Action: TRIAGE_PATIENT
  Decision: ALLOW
  Compliance: HIPAA:164.312(b), HL7
  Risk Score: 0.80
  Signature: ed25519:abc123...

What the auditor sees: "On Mar 7 at 14:22, clinical-ai-v2 classified patient #4422 as ESI-3. Receipt ta_7f3a2b is Ed25519-signed. Control: HIPAA 164.312(b)."

Compliance Frameworks

TrustAtom auto-maps actions to framework controls:

Action	Frameworks
`TRIAGE_PATIENT`	HIPAA 164.312(b), HL7
`APPROVE_LOAN`	SOX 302, FCRA
`TRADE_SIGNAL`	SOX 302, SEC 17a-4
`DEPLOY`	NIST PR, SOC2 CC6.1
`EXPORT_INTEGRATION`	NIST PR/RS, SOC2 A1.2
Custom	NIST PR (default)

Performance

Signing: <3ms average (Ed25519 + SHA-256)
Verification: <1ms
Receipt size: ~500 bytes JSON

Architecture

Your AI Agent
    ↓ (MCP call)
TrustAtom MCP Server (local)
    ├── Ed25519 key pair (you own the keys)
    ├── SHA-256 evidence hash
    ├── Compliance auto-mapping
    └── In-memory ledger (pluggable to Neo4j/SQLite)
    ↓
Receipt returned to your agent

Eval Tests

8 tests covering signing, verification, tampering detection, compliance mapping, risk scoring, and performance:

npm test
# ✅ Signs a decision and returns a valid receipt
# ✅ Verifies an authentic receipt
# ✅ Detects tampered receipt
# ✅ Auto-maps TRIAGE_PATIENT to HIPAA compliance tags
# ✅ Auto-maps APPROVE_LOAN to SOX compliance tags
# ✅ Computes risk score from action when not provided
# ✅ Signs DENY decisions with same integrity
# ✅ Signs within 3ms target for production use
# Results: 8 passed, 0 failed

Enterprise

Need hosted infrastructure with SLA? Contact [email protected]

Tier	Calls/day	Price
Developer	1,000	Free
Professional	100,000	$299/mo
Enterprise	Unlimited	$2,499/mo

Built By

Cyber Warrior Network — Trust Gate: Policy-gated AI decisions with cryptographic receipts.

No Receipt. No Trust.

TrustAtom MCP Server