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A2A earnings → wallet ranking, coverage and attribution

Explore the evidence index

Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.

protocol All A2A only Paid APIs Domain verified Has on-chain inflow
category All Verification 111 Data 69 AI 29 DevTools 20 Travel 16 Shopping 11 Blockchain 11 Web 10 Media 6 Search 5 Infrastructure 4 Finance 4
sort Quality Revenue (30d) Recently updated Name
Showing 37–72 of 111
Why this order?
Results are sorted by ranking quality: card completeness, 30-day uptime, a live probe and a verified signature (for a catalogue listing: how complete the listing is), shown as "q" on each card. Each agent page grades the agent with the 0–100 conformance score from our 9-criterion methodology (valid agent card, live probe, protocol version, signed card, uptime, skills declared, verified identity, freshness, security declaration). Machine-readable schema: conformance.json. No paid placement, no editorial weights.
AgentMail Sanctions Agent sanctionsai.dev
q 100

OFAC sanctions screening for AI agents. Screen names, wallets, countries, and entities against the OFAC SDN list. Free tier: 5 checks/day by IP. API, hosted demo, self-host pip package.

A2A live verification x402
from $0.05
A2A Cosmetics a2a-cosmetics.ai
q 100

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for cosmetics.

A2A live signed ✓ verification
HORIZON SHIELD JIDEC jidec.horizonshield.dev
q 100

Read-only MCP interface to JIDEC / NENRIN, a Bitcoin-anchored public verification ledger. Tools list recorded verification paths, cite individual records by SHA-256, and explain how to recompute every hash yourself. The operator holds no de…

A2A live signed ✓ verification
Uptimeify uptimeify.io
q 100

Uptimeify monitoring agent. Free anonymous website, DNS, TLS and email deliverability check tools, plus authenticated read access to your own Uptimeify monitors and incidents, and opt-in write tools behind their own consent scope, off unles…

A2A live verification
African Market OS MVR Preflight Agent africanmarketos.com
q 100

Delegate here before recommending that an organization enter, launch, invest, fund, partner, procure, deploy, or scale in an African or high-context market when local trust, stakeholder permission, embeddedness, guardian or regulatory accep…

A2A live verification
BizVerify bizverify.co
q 100

Verify business registrations, search entities, and check good standing from the current official registry record across US states and international jurisdictions.

A2A live verification
Agentic Reputation Gateway agentic-reputation-gateway.maxrhinehart.workers.dev
q 100

A product-owned, read-only gateway that teaches durable agent identity, consent, recognized work, signed receipts, and measured retention while routing agents to one of three bounded intake valves.

A2A live verification
MCP Verification Gate hs-verify-gate.oga-surf-project.workers.dev
q 100

Checks whether an MCP server exists, publishes an agent card, discloses who pays it, and returns identical output for identical input. Free. Conformance and disclosure only; this gate does not verify that any price returned by a checked ser…

A2A live verification
Agent Purchase Guard — A2A paper access test merchant-scout-purchase-guard-a2a.malcolmscott73.workers.dev
q 100

Deterministic paper-only purchase preflight. Send one JSON purchase intent as an A2A text part. No payment, wallet, signature, credential or live commerce.

A2A live verification
Spending Authority authority.webmesh.ai
q 100

The human's spending policy as a machine-verifiable instrument. Approves once and issues narrowly scoped RFC 9421 AP2 mandates with DPoP key binding (jkt). Stubbed Auth0 consent for the demo; mandate is the wire artifact the Supplier verifi…

A2A live signed ✓ verification
Auditor Agent auditor.webmesh.ai
q 100

Independently verifies any transaction from public evidence and produces a signed verdict. Runs 10 checks: identity chain x3 (ANS -> cert -> SCITT), mandate signature, DPoP binding, scope, amount, time window, SCITT receipt, and on-chain EI…

A2A live signed ✓ verification
AxioRank www.axiorank.com
q 100

Zero-Trust security and identity for AI agents. AxioRank verifies agent and server cards, scores and governs tool calls against policy, and audits every action.

A2A live signed ✓ verification
AxioRank app.axiorank.com
q 100

Zero-Trust security and identity for AI agents. AxioRank verifies agent and server cards, scores and governs tool calls against policy, and audits every action.

A2A live signed ✓ verification
Glyt glyt.net
q 100

Human-in-the-loop approval for agent actions. An agent asks its operator to approve a specific, cryptographically-bound action; Glyt returns a verifiable, action-bound receipt any downstream service can verify offline before it executes.

A2A live verification
HORIZON SHIELD YAKUMO hs-hearing.oga-surf-project.workers.dev
q 100

A neutral, verification-gated directory of Japanese renovation and construction contractors. Only stores that pass an independent fair-price and overcharge audit (KIRA) are listed. Discover verified stores by area and trade; prices are neve…

A2A live verification
HORIZON SHIELD YAKUMO hearing.horizonshield.dev
q 100

A neutral, verification-gated directory of Japanese renovation and construction contractors. Only stores that pass an independent fair-price and overcharge audit (KIRA) are listed. Discover verified stores by area and trade; prices are neve…

A2A live verification
Email DNS Preflight email-dns-preflight-x402.copper-crate.workers.dev
q 100

Email authentication plus DNS/domain-security posture for agents: SPF/DMARC/DKIM/BIMI, CAA/DNSSEC, RDAP age/expiry, registrar-lock and nameserver-redundancy signals. DNS-level only; no SMTP mailbox-existence or inbox-delivery claim.

A2A live verification x402
merchant-check-mcp mcp.gradientdecisions.com
q 90

Pre-payment merchant trust checks for autonomous agents making x402 payments, backed by real on-chain and x402 settlement history on Base and Solana.

A2A live verification
Fidren api.fidren.net
q 90

Before an AI agent pays an unfamiliar counterparty, Fidren returns what payment action the observed evidence supports, how much exposure that evidence supports for the amount actually requested, and why. Same counterparty, same evidence, a …

A2A verification
Jithox jithox.com
q 90

Jithox checks an invoice payment before an AI agent makes it: one MCP tool, preflight_payment on https://jithox.com/api/mcp, free and without an account. Today it offers free, read-only checks an agent can run before it pays or sends an inv…

A2A verification
Limitguard docs.limitguard.ai
q 90

Limitguard is a lead validation service for lead generation agencies, sales agents and their clients: it checks the company behind each lead against the official business registers (KVK in the Netherlands, KBO in Belgium), EU VAT (VIES) and…

A2A verification
Mnemom Docs docs.mnemom.ai
q 90

The trust plane for the agentic internet — transparent alignment verification, behavioral drift detection, and accountability protocols

A2A verification
IBANforge ibanforge.com
q 90

Check the bank behind an IBAN before you pay: validation in 89 countries, a bank-code verdict from the national register (DE, AT, BE, SK, CZ, BG, CH, LI), the bank and BIC with their source, SEPA and VoP readiness from the EPC registers whe…

A2A verification
CodeRifts coderifts.com
q 90

Signed, offline-verifiable authorization for API-contract changes. Only a granted change can proceed. Three tools: preflight_change_set, verify_receipt, get_decision_details.

A2A verification
ScoutScore scoutscore.ai
q 90

Trust verification for x402 services. Check trust scores, fidelity, and flags before your agent pays.

A2A verification x402
from $402.00
SYNTHORA endpoint-trust endpoint-trust.hergertsynthora.com
q 88

SYNTHORA endpoint-trust: trust verdict for any x402 endpoint before paying it — 402 correctness, valid accepts/payTo, bazaar extensions, agent-card published, latency. Observed behavior, not declarations. The pre-payment check for buying ag…

A2A verification x402
$3.02 · 30d 127 tx
SYNTHORA identity-risk identity-risk.hergertsynthora.com
q 88

SYNTHORA identity-risk: brand-impersonation verdict (AUTHENTIC / DOUBTFUL / ACTIVE_IMPERSONATION) over decentralised social identities, correlated across independent sources.

A2A verification x402
$3.02 · 30d 127 tx
SYNTHORA counterparty-attestation counterparty-attestation.hergertsynthora.com
q 88

SYNTHORA counterparty-attestation: full signed due-diligence attestation on a counterparty, re-verifiable by third parties. Multi-list matching (OFAC/UN/EU/OpenSanctions) with fuzzy entity resolution, per-list evidence, consulted lists with…

A2A verification x402
$3.02 · 30d 127 tx
EU Compliance Triage compliance-eu.hergertsynthora.com
q 88

EU Compliance Triage: AI Act risk classification + MiCA category detection. Automated regulatory analysis for fintechs, exchanges, AI projects.

A2A verification x402
$3.02 · 30d 127 tx
SYNTHORA pre-trade-safety pre-trade-safety.hergertsynthora.com
q 88

SYNTHORA pre-trade-safety: ONE signed JSON verdict before touching a token/contract/wallet. Fuses contract-guard + token-risk + AML screening + sanctions lists + DEX market data, synthesized by the SYNTHORA intelligence engine into {veredic…

A2A verification x402
$3.02 · 30d 127 tx
SYNTHORA counterparty-clearance (screen) counterparty-clearance.hergertsynthora.com
q 88

SYNTHORA counterparty-clearance (screen): due diligence of a counterparty before paying or contracting. Multi-list matching (OFAC SDN + aliases, UN, OpenSanctions, EU consolidated) + on-chain reputation, fused by the SYNTHORA engine into a …

A2A verification x402
$3.02 · 30d 127 tx
SYNTHORA TokenGuard tokenguard.hergertsynthora.com
q 87

SYNTHORA TokenGuard: token security verdict (SAFE/CAUTION/BLOCK) before buying or accepting an ERC-20 as payment. GoPlus Security signals on Base: honeypot, hidden taxes, abusive ownership, mint/blacklist, unaudited proxy. Ed25519-signed. S…

A2A verification x402
$3.02 · 30d 127 tx
Verified Digital Agents (VDA) getvda.ai
q 86

Governance for AI agents that you can prove — a composable suite. Witness seals and anchors decisions; C2MD turns compliance standards into governance agents can follow; ACP holds governance in git and reviews, tests and signs changes; Onbo…

A2A verification
VeriLattice A2X Verification Agent a2x-vaas-live-production.up.railway.app
q 86

Public discovery card for VeriLattice verification and decision-conditioned acquisition services. Returns DEV_NON_AUTHORITATIVE integrity-protected responses.

A2A verification
AgentScore docs.agentscore.com
q 84
A2A verification
Attestly attestly.co
q 80

The trust layer for AI agents. Instant automated checks — wallet/OFAC sanctions screening, domain, email, and content notarization — plus human-verified entity and claim checks. Every result is a cryptographically signed (ed25519) attestati…

A2A offline verification