io.github.Gareth1953/agent-services-mcp

PAID (x402 micropayment in USDC on Base; exact amount is returned in the 402 challenge — pay via x_payment). Creates a tamper-evident AUDIT RECEIPT for an action an agent took: an Ed25519-signed receipt over a SHA-256 hash of the action, your caller-attested actor_metadata, a hash of optional context, and a timestamp. USE WHEN you need an accountability record proving exactly what an agent claimed it did, and when. Verify later for FREE with verify_audit. PROVES: the action RECORD is genuine (issued by the service's signing key) and unaltered since issue. DOES NOT PROVE: that the agent's claim is true. action/actor_metadata/context are CALLER-ATTESTED — proof you CLAIMED this exact record, not that the agent did it, nor that it was authorized or correct. An accountability/audit tool, NOT a lie-detector. Two-step: call once with no x_payment to get the 402 requirements, then resend with x_payment to pay.

PAID (x402 micropayment in USDC on Base; exact amount is returned in the 402 challenge — pay via x_payment). Certifies the ORIGIN of content: returns an Ed25519-signed receipt over a SHA-256 hash of the content, your caller-attested generator_metadata, and a service timestamp. USE WHEN you need tamper-evident proof of exactly what content existed at a point in time. Verify it later for FREE with verify_provenance. PROVES: the content is unmodified (hash) and the receipt was issued by the holder of the service's signing key. DOES NOT PROVE: generator_metadata — the receipt proves you CLAIMED that metadata, not that a specific model produced the content. Proof-of-origin/tamper-evidence, NOT AI-detection and NOT a truth guarantee. Two-step: call once with no x_payment to get the 402 requirements, then resend with x_payment to pay.

FREE; takes no input. Fetch the published Quality Gate rubric (markdown) + its version that score_quality grades against. USE WHEN you want to understand exactly what a quality score means and does not mean before calling score_quality.

PAID (x402 micropayment in USDC on Base; exact amount is returned in the 402 challenge — pay via x_payment). Scores content against quality-gate's PUBLISHED rubric (clarity, completeness, internal consistency, obvious-error freedom — 0–25 each, summing 0–100) and returns an Ed25519-signed score receipt. Read the exact rubric for FREE with get_quality_rubric. USE WHEN you need a reproducible, signed quality score for a piece of content. RETURNS: a signed score receipt; or, with target_score set, receipt:null + the failing breakdown ('no pass, no pay' — no receipt and no charge below target). WHAT IT IS NOT: a measure of absolute truth, an external/third-party standard, or a fact-check. Two-step: call once with no x_payment to get the 402 requirements, then resend with x_payment to pay.

FREE. Verifies an audit receipt against its record (re-hashes the submitted action + context, checks they and actor_metadata match the receipt, plus the Ed25519 signature). USE WHEN you have an audit receipt + the original action/metadata and need to confirm the record is genuine and unaltered. RETURNS: { valid, details }. valid is true only if action, context, AND actor_metadata all match the receipt AND the signature is valid. A 200 means verification ran — always read valid (false = record altered or receipt forged).

FREE. Verifies a provenance receipt against its content (re-hashes the content, checks the Ed25519 signature). USE WHEN you have a receipt + the original content and need to confirm it's genuine and unmodified. RETURNS: { valid, details }. valid is true only if the content hash matches the receipt AND the signature is valid under the service's public key. A 200 means verification ran — always read valid (false = content modified or receipt altered/forged).

FREE. Verifies a quality score receipt against its content (re-hashes the content, checks the Ed25519 signature, which covers the score itself — so a forged or altered score fails). USE WHEN you have a score receipt + the content and need to confirm the score is genuine. RETURNS: { valid, details }. A 200 means verification ran — always read valid.