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invinoveritas Decision Receipt
x402
invinoveritas Decision Receipt is a paid API for AI agents from api.babyblueviper.com, paid per call via x402, $0.0825/call, status unknown (last checked 2026-10-20).
Issues a cryptographically signed, tamper-evident receipt for a bounded-choice AI decision, committing the question, options, choice, and decider identity to a verifiable record.
Price / call$0.0825
Success—
StatusUnknown
How this service works
invinoveritas /decision-receipt — a signed receipt for a bounded-choice decision (OpenAI Decisions API, Jev, any classifier): hashes of
Output
A signed, verifiable receipt containing hashed commitments of the question, context, options, and chosen answer, along with decider identity fields (provider, model, hashed request_id), a BIP-340 signature if decider pubkey was provided, and metadata such as timestamp and score — forming a tamper-evident audit record of the AI decision.
Example use cases
Auditable content moderation decision
“The moderation classifier just flagged a post as 'violating' out of the options ['safe','violating','uncertain'] — can you create a signed decision receipt for that choice, including the post text as context and the model's confidence score of 0.91, so we have a tamper-proof audit trail?”
Irreversible action gating with review proof
“Before my agent executes the 'terminate_contract' option, I need a decision receipt for the question 'Should this vendor contract be terminated?' with options ['renew','terminate_contract','escalate'] — mark 'terminate_contract' as irreversible and attach the review proof we got back from /review.”
Compliance record for hiring classifier
“Our hiring classifier returned 'advance' for a candidate from options ['advance','reject','hold'] — can you commit that decision to a signed receipt with the candidate profile hashed as context and the recruiter model's pubkey, so we have a verifiable record for compliance?”
Technical details
Endpoint
POSThttps://api.babyblueviper.com/decision-receipt?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a cryptographically signed, auditable receipt for a bounded-choice AI decision — especially before executing irreversible actions, for compliance logging, or when you need to prove a specific model made a specific choice at a specific time. Prefer this over generic logging when non-repudiation, BIP-340 attestation, or decider-scoped commitments matter.
Side effects
- choice not in options array — validation error
- decider_sig fails BIP-340 verification against provided pubkey
- irreversible_options selected without a valid review_proof — rejected
- context and context_sha256 both missing — cannot commit
- salt not 64 hex characters — format error
- decider pubkey malformed or not x-only BIP-340 format
- payment not fulfilled (x402 payment required response)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| salt | string | Decider-scoped only: the decider's 64-hex salt for the commitments it signs |
| score | number | Decider score for choice, 0-1 (optional) |
| choice | string | The option returned; must be one of options |
| context | string | Input decided on; hashed and discarded |
| decider | object | {provider, model, request_id, pubkey}; request_id stored only as a hash; pubkey (x-only BIP-340) makes the slot decider-scoped |
| options | array | The fixed answer options (2-64) |
| question | string | The question the decider answered |
| decider_sig | string | Decider-scoped only: BIP-340 sig by decider.pubkey over sha256(JCS(decision claim)) |
| review_proof | object | Signed /review event over the same context |
| context_sha256 | string | Or its sha256 hex |
| decider_claimed_at | integer | Unix seconds in the signed claim |
| irreversible_options | array | Options that need a /review proof to be executable |
Tags
x402
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