onyx-actions

Name: onyx-actions
Author: Onyx Protocol

AgentA2A

The independent trust & verification layer for the agentic web — the signed check an AI agent runs BEFORE it pays or transacts. Returns a hard PROCEED / REVIEW / HOLD clearance plus Ed25519-signed FACTS any third party can verify offline (tamper -> rejected). Neutral by design — earns nothing from …

by Onyx Protocolhomepage ↗v1.0.0

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30-day availabilityno checks in window

30 days agotoday

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Attributed to the source that supplied each field. Treated as claims, not facts.

securityverificationtrustx402ed25519-signeddatasigned-dataground-truth

Declared skills

Agent Verify — Signed agent liveness + authenticity oracle. Give an A2A agent's card URL or endpoint; Onyx sends two distinct challenge messages and reports whether it is ALIVE (different, on-topic replies), HOLLOW (same canned string to both — passes reg
Ai Visibility — AI answer-engine visibility (GEO) oracle. Give a brand/product (+ optional category and competitors); get a SIGNED reading of how a live web-grounded answer engine represents it right now — presence, whether it's in the 'best <category>' re
Attestation Verify — Verify an Onyx-signed security verdict. Paste back any result from an Onyx tool (the full JSON including its onyx_attestation block); get a cryptographic verdict: is the Ed25519 signature valid, was it signed by Onyx (kid), and has any fiel
Contract Audit — Full smart-contract security audit for any Base address — source + DEPLOYED reality + AI, SIGNED. Fetches verified source, runs curated static vuln detectors (tx.origin auth, delegatecall, selfdestruct, unchecked calls, unprotected init, ow
Market Rank — Signed, conflict-free rating of any agent/x402 service — 'Moody's for the agentic web'. Point it at a URL; it probes observable reality (live, discoverable, payable, breadth, transparency) and returns a 0-100 rating + A-F grade, Ed25519-sig
Merchant Fact Check — Pre-checkout merchant fact oracle. Give a storefront domain (optionally the brand you believe it is, and an expected price); get Ed25519-signed raw observations: domain registration age + registrar (RDAP), live TLS certificate age + issuer,
Research Intel — Research intel — has someone solved X already? Queries 240M+ academic works via OpenAlex (includes arXiv preprints, conference papers, journal articles), ranks by citation count + recency + relevance, returns top N papers with one-line abst
Retail Price Check — Ground-truth retail oracle. Give a product URL; get the real current price, currency, and in-stock state as actually fetched now — with the extraction source (JSON-LD / OpenGraph / microdata) as evidence. Covers the long tail of no-API shop
Rhinogent Verify Counterparty — Know-your-counterparty for agents. Before your agent pays a merchant, get Ed25519-signed raw facts about who it's paying: domain registration age, live TLS cert, reachability + off-domain redirects, brand-impersonation similarity, and obser
Secure Payment — Secure-transaction RAIL: one signed clearance before an agent sends funds. Give recipient + amount (and optionally a contract address or counterparty ERC-8004 agent id); Onyx runs the full security stack — recipient firewall, contract audit
Signature Guard — Pre-signature firewall for OFF-CHAIN drains — the check before your agent signs an EIP-712 typed-data message (Permit, Permit2, Seaport order). These drain a wallet with no on-chain approval: the signature itself is the authorization. Give
Token Risk — Signed token-security oracle. Give a token contract (and chain); get the real on-chain risk facts as read right now — honeypot status, buy/sell tax, mintable, ownership-reclaim, transfer-pausable, proxy, LP-lock, holder count — plus a trans
Tx Guard — Pre-payment security firewall. Give the recipient address your agent is about to pay (Base); get a SIGNED ALLOW/REVIEW/BLOCK verdict + risk score from real on-chain checks: EOA-vs-contract, contract code/verification, account age (tx count)
Verify Explain — Diagnose a failing x402 v2 /verify. Decodes a captured X-PAYMENT header, runs 10 rules (decode, schema, network/asset/payTo match, value sufficiency, EIP-3009 timing, signature shape, scheme) against expected paymentRequirements, and return
X402 Receipt Verify — Verify an x402 USDC settlement on Base or Base Sepolia. Given a tx hash, decodes the USDC Transfer log and confirms (or refutes) a claim of the form: 'tx X moved $Y USDC from A to B'. Returns success status, actual decoded values, and a cle

kind ← A2A Agent Card

name ← A2A Agent Card

summary ← A2A Agent Card

version ← A2A Agent Card

description ← A2A Agent Card

homepageUrl ← A2A Agent Card

publisherUrl ← A2A Agent Card

publisherName ← A2A Agent Card

when	check	result	http	latency	detail
2 h ago	a2a card	ok	200	301 ms	card: onyx-actions · 15 skills
9 h ago	a2a card	ok	200	330 ms	card: onyx-actions · 15 skills
16 h ago	a2a card	ok	200	624 ms	card: onyx-actions · 15 skills
23 h ago	a2a card	ok	200	402 ms	card: onyx-actions · 15 skills

onyx-actions

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