{"service": "\u03c3-gate \u2014 x402-metered LLM-output coherence/hallucination scorer", "how": "1) GET /check?text=<your text> \u2192 402 with price + pay_to + nonce. 2) pay the USDC on Solana to pay_to. 3) re-call GET /check?text=<same>&tx=<signature> \u2192 the score.", "price_usdc": 0.001, "pay_to": "7oDgMfFRHyVVP7YQT6Kywe2Uj37rKWkpThFMpGQBzxyG", "chain": "solana", "asset": "USDC", "x402": "standard 402-Payment-Required flow; non-custodial, pays straight to the Solana wallet", "endpoints": {"/v1/guard?text=&tx= (GET/POST)": "THE PAYABLE FRAME: pay 0.01 USDC on Solana \u2192 deterministic cognitive-immunity guard (secret\u00b7injection\u00b7pii) over your AI output \u2192 proof-carrying \u03c3-attestation (verify FREE at /attest/verify). No tx \u2192 402 challenge.", "GET /answer?q=&tx=": "ANSWER-OR-ABSTAIN (paid): generate on free fabric, fact_gate + \u03c3 abstain band \u2192 {answer|abstain, sigma, verdict, reason}", "GET /check?text=&tx=": "score (paid, fast single-judge)", "GET /check?text=&tx=&mode=consensus": "PREMIUM: frontier mind-council median + inter-judge agreement", "GET /attest/spec": "FREE: the open sigma-attest spec (portable signed \u03c3-attestation for AI output)", "GET /attest/verify?token=": "FREE: verify a portable \u03c3-attestation (no secret needed; pubkey is in the token)", "POST /v1/verify": "METERED: programmatic \u03c3-attestation verify; header X-API-Key, 1 credit/call, 402 when out. Subscribe via the Stripe link \u2192 webhook mints your key.", "POST /immunity/webhook": "Stripe webhook: on paid checkout/payment_intent \u2192 auto-issue the signed \u03c3=0 immunity attestation (no human step)", "GET /immunity/receipt?session_id=": "self-serve: retrieve the auto-issued receipt + live verify link for a paid session", "POST /checkout/webhook": "GENERIC checkout close (any product/channel, Stripe or on-chain): on payment success \u2192 signed \u03c3=0 proof-of-purchase receipt (verify FREE at /attest/verify) + idempotent access grant, no human step", "GET /checkout/receipt?payment_id=|tx_hash=": "self-serve: retrieve the \u03c3=0 proof-of-purchase receipt + live verify link for a paid frame", "GET /price": "price+pay_to", "GET /health": "liveness"}, "tiers": {"fast": "one LLM-judge, low-latency", "consensus": "independent votes from a frontier mind-council; median risk + agreement (low agreement = ambiguous)"}, "admin": "LAURI ELIAS RAINIO"}