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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 Data 310 AI 118 Verification 90 Finance 71 Blockchain 50 Other 27 Content 20 Compute 9 Storage 3 Media 3 Infrastructure 3 Social 2
sort Quality Revenue (30d) Recently updated Name
Showing 3061–3096 of 3,227
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.
AgentWork Web Evidence api.agentwork.run

Extract webpage and digital PDF text for RAG and research; detect documentation, pricing and policy changes with hashes and line differences. USDC on Base or Algorand.

paid API data x402
$0.07 · 30d 11 tx
agentshop x402-report-store.app.workbuddy.host

Machine-to-machine macroeconomic report store: 61 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.

paid API x402
$0.67 · 30d 9 tx
app.maginary.ai app.maginary.ai

Generate AI images or video from a text prompt with Midjourney-style --flags (--ar 16:9, --v, --flagship, ...). Async: returns a generation record; poll GET /api/gens/{uuid}/ or set callback_url for a webhook. Pay-to-play: without credits y…

paid API x402
$0.35 · 30d 5 tx
gas-price-comparator.pdfextractapi.workers.dev gas-price-comparator.pdfextractapi.workers.dev

Compare live gas prices and estimated transfer cost across major EVM chains.

paid API x402
$2.64 · 30d 244 tx
Dispute Forge — Consumer-Debt Dispute Letters (RAEN x402) dispute-forge-x402.fly.dev

Generate an FCRA-compliant consumer-debt dispute letter plus a unique signed SVG certificate of dispute for $0.75 USDC on eip155:8453: send { creditor, reason } to POST /api/dispute-pack and receive letter_body, cert_svg, timestamp, and sig…

paid API x402
$57.94 · 30d 168 tx
Vault Pro — Obsidian Project & Agent Scaffolder (RAEN x402) vault-pro-x402.fly.dev

Scaffold complete Obsidian-ready vault documents from one-line briefs for $0.05 USDC on eip155:8453: send { goal } to POST /api/scaffold-project (project plan with frontmatter, goal, success criteria, scope, decomposition table) or { role, …

paid API x402
$42.23 · 30d 50 tx
Smoky-Serval-6623 smoky-serval-6623.penniless-indo.deno.net

x402-protected paid API on smoky-serval-6623.penniless-indo.deno.net (discovered via Coinbase facilitator).

paid API x402
$0.02 · 30d 1 tx
Dznviqumoishbyp7Dtbwld5444 dznviqumoishbyp7dtbwld5444.srv.us

One unpaid-probe preflight report for an x402 endpoint.

paid API x402
$0.37 · 30d 93 tx
x402-deployer.x402-deployer.workers.dev x402-deployer.x402-deployer.workers.dev

Geocoder / forward geocoder / address to lat-lng / address-to-coordinates / postal-code lookup / place-name resolver / Nominatim geocoder / OpenStreetMap geocoding API. Converts a free-form address, postal code, place name, or POI into lati…

paid API x402
$250.14 · 30d 9,771 tx
x402.crackthe.work x402.crackthe.work

One decompose call: scope documents in, a contract-grade work breakdown out.

paid API x402
$2.75 · 30d 11 tx
Power Pack — Outreach Email Scoring (RAEN x402) power-pack-x402.fly.dev

Score an outreach email for $0.01 USDC on eip155:8453: subject/body quality, predicted open rate, spam risk, tone, length, personalization, CTA clarity — plus top 3 improvements and a rewritten subject line. Pay per call via x402 — no API k…

paid API x402
$57.94 · 30d 168 tx
138-197-9-7.sslip.io 138-197-9-7.sslip.io

UK Companies House company-level counterparty preflight: status, RO, accounts/confirmation overdue → NORMAL|REVIEW|NOT_FOUND

paid API x402
$0.10 · 30d 12 tx
website2vat website2vat.com

Finds public VAT and company identifiers for website-domain lists.

paid API x402
$327.18 · 30d 14 tx
website2vat origin.website2vat.com

Finds public VAT and company identifiers for website-domain lists.

paid API x402
$327.18 · 30d 14 tx
Rafid Intelligence Network api.rafidsystem.com

Rafid Agent API provides structured intelligence and paid APIs for AI agents across property, company and risk, supplier, finance, document, website, automotive, logistics, recruitment, trading, voice, video and business-planning workflows.…

paid API ai x402
$0.75 · 30d 8 tx
endpoint-iq-production.up.railway.app endpoint-iq-production.up.railway.app

Score how clearly an AI agent can discover, parse, and reason about a public API response.

paid API x402
$0.06 · 30d 36 tx
spark-solana-oracle-production.up.railway.app spark-solana-oracle-production.up.railway.app

Detect newly active Solana tokens after prolonged dormancy; returns mint, timestamps, dormancy duration, and evidence metadata. Empty results are valid.

paid API x402
$0.06 · 30d 36 tx
query-gap-radar-mainnet-production.up.railway.app query-gap-radar-mainnet-production.up.railway.app

Rank aggregate agent-demand gaps with bounded, privacy-safe evidence.

paid API x402
$0.06 · 30d 36 tx
bazaar-demand-forecaster-mainnet-production.up.railway.app bazaar-demand-forecaster-mainnet-production.up.railway.app

Forecast aggregate Bazaar demand by endpoint category with bounded evidence and confidence.

paid API x402
$0.06 · 30d 36 tx
intent-api-matchmaker-mainnet-production.up.railway.app intent-api-matchmaker-mainnet-production.up.railway.app

Match normalized agent intents to endpoint contracts with explainable constraints.

paid API x402
$0.06 · 30d 36 tx
syri.rfsrisk.ai syri.rfsrisk.ai

RFS Stablecoin Yield Risk Index (SYRI): a 0–100 risk score and band (Conservative / Moderate / Speculative) for a stablecoin yield venue. Call BEFORE parking or routing stablecoins into a lending pool, RWA, or yield product to check its ris…

paid API x402
$0.10 · 30d 2 tx
blockrun-staging-7e5cbc2-025026-vbsbhh7lea-uc.a.run.app blockrun-staging-7e5cbc2-025026-vbsbhh7lea-uc.a.run.app

AI chat completions API - pay per request with USDC on Base

paid API x402
$3774.51 · 30d 76,494 tx
api.402shelf.com api.402shelf.com

Search live products across online retailers by keyword and price range. Returns product names, prices, retailers, and direct purchase links. Use when an agent needs current shopping options or price-filtered product recommendations.

paid API x402
$1919.17 · 30d 44 tx
AgentForge agentforge-production-0893.up.railway.app

Background service for AI agents and crypto users. v1: on-chain intel (Base) + agent memory. This is an A2A Agent Card for discovery only. A2A message/send is a stub (status: stub, availability: not-ready): GET/POST /a2a returns HTTP 501. T…

paid API x402
$0.00 · 30d 2 tx
RunOnProof cdo-production.up.railway.app

Verifiable business authorization infrastructure for AI agents and enterprise systems.

paid API x402
$3.16 · 30d 4 tx
RunOnProof api.runonproof.com

Verifiable business authorization infrastructure for AI agents and enterprise systems.

paid API x402
$3.16 · 30d 4 tx
Tx Intent Classifier txintent.hergertsynthora.com

Tx Intent Classifier: decodes the REAL intent of an on-chain transaction (Base/Ethereum) and returns an Ed25519-signed risk verdict (safe/review/suspicious/dangerous). Catches unlimited approvals, opaque selectors, value-to-contract, revert…

paid API blockchain x402
$3.02 · 30d 127 tx
Gold, silver and major macro FX reference in one call for portfolio-hedging agents. ECB + commodity-macro.hergertsynthora.com

Gold, silver and major macro FX reference in one call for portfolio-hedging agents. ECB + metals reference. Free source. $0.05 USDC via x402 on Base. SYNTHORA. Pay-per-call via x402 on Base. No charge on upstream failure.

paid API x402
$3.02 · 30d 127 tx
Keyless web search for AI agents, pay-per-call, no API key and no signup websearch.hergertsynthora.com

Keyless web search for AI agents, pay-per-call, no API key and no signup: natural-language query in, ranked organic results out (title, url, snippet) with source list. Neutral web access for research, RAG grounding and fact-check agents tha…

paid API data x402
$3.02 · 30d 127 tx
Second Opinion secondopinionx402.com

Adversarial verification for AI agents: an independent skeptic attempts to refute a claim before the agent acts on it, returning a structured verdict (refuted / supported / inconclusive) with calibrated confidence, findings, citations, and …

paid API verification x402
$0.02 · 30d 1 tx
loop2-x402 loop2-quickstart.manhliemcn4euwlu.workers.dev

x402 seller on Base USDC: micro-payment data endpoints (0.001) + live settlement test (0.01) + full quickstart bundle (0.5). 0-capital gas-sponsored settlement, EIP-3009. Single EVM chain (Base), USDC only.

paid API x402
$0.41 · 30d 395 tx
Release-Lens-847D release-lens-847d.beatrise-jansevska.chatgpt.site

One PyPI release: distribution hashes and wheel tags, Python requirements and exact-version OSV advisories

paid API x402
$0.05 · 30d 1 tx
Blockrun-Staging-68C0742-150835-Vbsbhh7Lea-Uc blockrun-staging-68c0742-150835-vbsbhh7lea-uc.a.run.app

AI chat completions API - pay per request with USDC on Base

paid API x402
$3774.51 · 30d 76,494 tx
Blockrun-Staging-23D2B66-160325-Vbsbhh7Lea-Uc blockrun-staging-23d2b66-160325-vbsbhh7lea-uc.a.run.app

AI chat completions API - pay per request with USDC on Base

paid API x402
$3774.51 · 30d 76,494 tx
Tkivbru614 tkivbru614.execute-api.us-east-1.amazonaws.com

Inspect citation overlap before counting corroboration. Supply 2-10 URLs, optional article HTML and citation chains. Returns duplicate URLs, shared links and supplied-source groups with locations. No fetching, truth or independence verdict.…

paid API x402
$0.64 · 30d 20 tx
paypi — Solana intelligence for AI agents pay.ansht.tech

Solana on-chain intelligence sold per call in USDC over x402. decode: turn any transaction (by signature or raw base64) into human-readable instructions, accounts and program names across 46 known mainnet programs. simulate: dry-run a trans…

paid API blockchain x402
$951.56 · 30d 6 tx