mcp-server

[](https://smithery.ai/servers/cronozen/proof) [](https://www.npmjs.com/package/cronozen) [](LICENSE)

Tamper-proof audit trail for AI decisions. Record, verify, and export cryptographic proof chains via MCP.

This MCP server exposes 6 tools for AI decision provenance — recording decisions, verifying cryptographic integrity, and exporting audit-ready evidence. AI clients such as Claude Desktop connect over Streamable HTTP transport and interact with decision proofs through a standard MCP interface.

• Transport: Streamable HTTP (not SSE, not stdio)
• Session model: Stateful per-session transport with UUID session IDs
• Auth forwarding: Per-request Bearer token is forwarded to the underlying API

| Tool | Description | Required Params | Optional Params | |------|-------------|-----------------|-----------------| | proof_record | Records an AI execution as a DPU. Creates a cryptographically chained proof record with SHA-256 hash chain. | domain (string), purpose (string), final_action (string) | evidence_level (DRAFT \| PARTIAL \| AUDIT_READY), reviewed_by, reviewer_role, approved (boolean), tags (string[]), reference_type, reference_id | | proof_verify | Verifies a specific proof record's cryptographic integrity. Checks hash consistency. | proofId (string) | data (Record\<string, unknown\>) | | proof_chain_verify | Verifies the entire SHA-256 hash chain for a domain. Reports the first broken index if tampering is detected. | domain (string) | fromIndex (number), toIndex (number), batchSize (number) | | proof_get | Retrieves a DPU by ID with full details including hash chain position, evidence level, and compliance info. | id (string) | -- | | proof_export_jsonld | Exports a DPU as a JSON-LD v2.0 do