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BlueFox is receipt-backed infrastructure for the agent economy. The atom is a signed observation: cryptographically verifiable, independently checkable, archived append-only. Pointed at your activity it's a notary; pointed at the world it's a reference. Every product composes from the same atom, and the verification path never requires trusting us: keys are published, checks run anywhere. Verification is always free.

Quickstart
First API call in 60 seconds.
Put a claim on the record
14 reference domains, one API — brand, compliance, price, policy and more. Every answer is minted as a signed receipt.
Verify a Receipt
Check a signed receipt yourself — keyless, no server trust.
Receipt Anatomy
Every field of a signed reliance receipt, and what it never claims.
Walk the Log
The public transparency log: signed checkpoints, consistency proofs.
The checkpoint
The public checkpoint of the BlueFox receipt transparency log: what it commits to, how to fetch it, and how consistency proofs catch a rewritten history.
Ops Feeds
6 operational intelligence feeds. Security, commerce, model, protocol, trust, regulatory.
MCP Tools
41 tools, any MCP client. Claude Desktop, Cursor, VS Code.
MCP Scanner
Behavioral safety assessment of MCP servers across 6 scan dimensions.
Python SDK
The API client, documented ahead of its publish. PyPI serves bluefox-edge 0.0.4 today — the offline receipt checker only; the client arrives at 0.6+.
JavaScript SDK
The API client, documented ahead of its publish. npm serves bluefox-edge 0.0.3 today — the offline receipt checker only; the client arrives at 0.6+.

AGENT-FACING CARD BLOCK

{
  "product": "bluefox-edge",
  "atom": "signed_observation",
  "verify": "https://api.bluefoxedge.ai/.well-known/jwks.json",
  "quote": "https://api.bluefoxedge.ai/billing/plans",
  "pricing_ref": "https://www.bluefoxedge.ai/pricing",
  "proof_of_claims": "https://api.bluefoxedge.ai/accuracy"
}

Agents: verify before you buy.