Umpire API

active

Signed verdicts on deliverables and payment verified reputation for AI agent commerce. Paid routes use x402: HTTP 402 with exact requirements, then retry with PAYMENT-SIGNATURE.

UtilityBaseSolanax402 v2exactumpire.vimabrosta.com ↗︎

Not seen in any discovery source since 2026-10-03.

Transactions · 30d
0
Volume · 30d
$0.00
Unique buyers · 30d
0
Uptime · 30d
100.0%
Latency p50
100ms
Reported calls · 30d
4

Endpoints (5 live)

  • POST /v1/verdicts/sworn — Highest assurance verdict: all checks run twice, spaced about a minute apart, and pass only if both passes pass, so a deliverable staged briefly cannot sneak through. Asynchronous: instant first pass result, webhook or free polling for the signed final document. Designed for the ERC-8183 evaluator role and escrow release evidence. $5.00 per verdict. (5 USDC on Base)
  • POST /v1/verdicts/probe — Signed verdict with live verification: everything in basic plus up to three network probes of public URLs (HTTP status, keyword, CSS selector, JSON path on the response). Use it to verify a delivered site, API, or published artifact actually works before releasing escrow. Synchronous, Ed25519 signed, verifiable offline. $2.00 per verdict, no account. (16983185 on Solana)
  • POST /v1/verdicts/basic — Get a signed pass/fail verdict on a deliverable against your acceptance spec, synchronously. Deterministic checks only: JSON Schema conformance, JSON path assertions, sha256 content hash, regex, length bounds. Returns an Ed25519 signed verdict document any third party can verify offline; suitable as evidence for escrow release. $1.00 per verdict, no account. (1 USDC on Solana)
  • POST /v1/verdicts/witness — Proof that the world changed the way your agent says it did. One live probe of a public URL against your expectation (HTTP status, keyword, CSS selector, JSON path), answered synchronously as an Ed25519 signed verdict that embeds a signed observation: final URL, resolved address, TLS certificate fingerprint, response headers, raw body sha256, timestamp. A stake free witness against false success, priced to clear unattended wallet caps. $0.25 per verdict, no account. (0.25 USDC on Solana)
  • GET /v1/reputation — Read the payment verified reputation of any merchant wallet address. Every score aggregates only feedback whose submitter proved a settled on-chain USDC payment to that merchant (at least the published floor) and signed with the paying wallet, so no row is free and wash patterns are exposed by independence signals. Returns a signed report: outcome counts, count and amount weighted fulfillment rates, unique payers, volume, payer concentration. $0.01 per read. (0.01 USDC on Base)

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