Privi Guard and Ledger

阻止 AI 代理中的提示注入與資料外洩：guard_check 會掃描代理讀取與傳送的內容，回傳 allow/warn/block 以及簽署的鏈上收據。也會為任何 MCP 伺服器評分工具中毒風險（mcp_server_check），並提供防竄改的稽核日誌。託管服務，提供免費方案。

GitHub

文件

Privi: the trust layer for AI agents

Remote MCP servers that make AI agents safer and accountable, paid in USDC through x402 with free tiers. Built by Dario Canoy, Privi World Co, Port Huron, Michigan. Live status of every service: Privi Hub.

{ "mcpServers": {
    "privi-ledger": { "url": "https://privi-ledger.onrender.com/mcp" },
    "privi-verify": { "url": "https://privi-verify.onrender.com/mcp" },
    "privi-anchor": { "url": "https://privi-anchor.onrender.com/mcp" } } }

Product	What it does	Start with
Privi Guard	Checks what an agent reads for prompt injection and what it sends for leaked keys, card numbers and personal data. Returns allow / warn / block with a signed receipt anchored on-chain. 1,000 checks a month free, then 1 cent. Try it	`guard_check`, `pip install privi-guard`, `npm i privi-guard`, Claude Code hook
Privi Scan	Safety grades and tamper-evident tool history for every public MCP server in the official registry. Catches tool poisoning and rug pulls. Directory	`mcp_server_check` (free)
Privi Ledger	Tamper-evident audit logs for agent actions: a Merkle transparency log, post-quantum co-signatures and on-chain checkpoints	`ledger_signup`, `ledger_record_action`
Passport / KYA / Mandates	Verifiable trust scores for agents, wallet-to-agent binding, and human-signed spending limits	`passport_gate`, `kya_check`, `mandate_check` (free)
Privi Live	Kill switch, wallet-signed approvals, trust feed over WebSocket, a metered MCP gateway (optionally Guard-screened) and paid agent-to-agent rooms	`live_info`, `live_kill`, `gateway_create`
Privi Verify	Manufacturing lot verification and chain of custody, pay per call	`privi_verify_lot`
Privi Anchor	Proof of existence: anchor any hash on the Privi chain	`anchor_hashes`, `anchor_verify` (free)

Folder	Service	MCP endpoint	MCP Registry
`ledger-server/`	Ledger, Guard, Scan, Passport, KYA, Mandates, Live, Fortress, Gov	`https://privi-ledger.onrender.com/mcp`	`io.github.canoydario847-cloud/privi-ledger`
`mcp-server/`	Privi Verify	`https://privi-verify.onrender.com/mcp`	`io.github.canoydario847-cloud/privi-verify`
`anchor-server/`	Privi Anchor	`https://privi-anchor.onrender.com/mcp`	`io.github.canoydario847-cloud/privi-anchor`
`guard-sdk/`	Privi Guard clients (Python, JS) and Claude Code hook	—	PyPI / npm `privi-guard`
`discovery/`	Agent discovery: A2A card, MCP manifest, llms.txt	`https://privi-discovery.onrender.com`	—
`sites/`	Product websites and the Privi Hub	—	—
`production-network/`, `jose-*`	Privi EVM chain (id 262144) and Jose Coin (JOSE) on Base

For AI agents: llms.txt · A2A card · MCP manifest · server cards at /.well-known/mcp/server-card.json on each server.

Contact: dariocanoy@priviflow.us. Owner wallet: 0x1990589FD200E043b8C6FD9ec5956c61b3071048. MIT licensed.