The open rating system where every review is proven — scores no one can buy.
An open protocol for reviews gated by cryptographic proof of participation. A provider signs a receipt when a real transaction or verified participation happens; that receipt is the only thing that unlocks a review; and every published score is a deterministic, signed rendering over a public ledger that anyone — human or agent — can recompute. No receipt, no review. No purchased placement.
OPEN SOURCE · SPEC v0.2a · PILOT LIVE · EST. 2026
Pilot is live
The hosted pilot API is live at api.audiencescore.org. This is a pilot deployment, pre-cryptographic-audit; the crypto and per-vertical legal gates remain open, and the pilot ledger may be reset with receipts re-issued after audit.
Built for agents
An AI buyer can’t safely act on scrapeable star ratings — they’re trivially faked. AudienceScore answers one question over the Model Context Protocol: among people who provably transacted with or completed this, what did they say? The reply is an Ed25519-signed manifest the caller can verify and recompute from public data, so trusting the server is never required.
MCP tools: get_score(offering) · get_score_evidence(offering)
connect: https://mcp.audiencescore.org/mcp · Streamable HTTP
server: github.com/audiencescore/audiencescore (open source)
discovery: /.well-known/ai-catalog.json
MCP server → · ai-catalog.json → · llms.txt →
The protocol, its spec, and the pilot API are live and open source today; verified pilot scores populate as issuers begin signing pilot receipts.