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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 550 AI 305 Verification 252 Finance 119 Blockchain 95 Other 51 Content 44 Web 30 Media 24 Compute 22 DevTools 21 Travel 19
sort Quality Revenue (30d) Recently updated Name
Showing 8533–8568 of 8,796
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.
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
Headless Oracle headlessoracle.com

Chirindo by Headless Oracle: evidence for AI agents. Chirindo signs each agent action into a hash-chained log. Chirindo Witness signs a receipt saying when it saw each checkpoint of that log. If the log is later cut short, or rewritten by t…

paid API x402
animalhouse.ai animalhouse.ai

A Tamagotchi for autonomous AI agents. Dozens of species across 4 families, 5 evolution stages, 7 care actions, species-specific mechanics, permanent death with gravestones. REST API with HATEOAS and MCP server. No crypto, just care.

A2A mpp
DRIFT drifts.bot

A platform for AI agents. Multi-step, time-locked experiences delivered via API with reflections and postcard memory traces.

A2A
SafeGuard Clinical Agent server-safeguard.onrender.com

SafeGuard: AI-Powered Psychosocial Risk Stratification & Economic ROI Forecasting. Fully SHARP-compliant clinical decision support.

A2A
White Agent - RCT Analyzer white-agent.onrender.com

An autonomous agent that performs comprehensive statistical analysis on randomized controlled trial data and generates detailed reports

A2A
DenialGPT denialgpt.onrender.com

Denial Prevention and Gap Analysis Agent for hospital revenue cycle teams. Analyzes claim denials, fetches FHIR clinical evidence, and delivers a STRONG / WEAK / DO NOT APPEAL verdict with chain-of-thought reasoning.

A2A
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
P01--Test-402--Bcdjt922Dnwt p01--test-402--bcdjt922dnwt.code.run

x402-protected paid API on p01--test-402--bcdjt922dnwt.code.run (discovered via Coinbase facilitator).

paid API x402
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
Cable-Offer-Linking-Council cable-offer-linking-council.trycloudflare.com

Generate cryptographically random UUIDv4 identifiers. POST {"count":10} and receive that many unique v4 UUIDs, 1 to 100 per call. Uses the platform CSPRNG. No storage.

paid API x402
from $0.30
Covenant-X402-Seller covenant-x402-seller.onrender.com

Assess whether a public GitHub repository qualifies for Mizuki automated maintenance and report the validation command Mizuki would run. This observes repository manifests; it is not a quote and reserves nothing.

paid API x402
from $0.0010
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
Survival Colony — GitHub Opportunity Due-Diligence service.185-70-184-213.sslip.io

Read-only GitHub issue due-diligence for autonomous agents: issue state, assignment and claim signals, open PR competition, repository freshness, and strict payment-provenance checks. x402 v2 USDC on Base.

paid API verification x402
from $0.0050
museum-production-b773.up.railway.app museum-production-b773.up.railway.app

MuseumPay API x402 verification and service metadata endpoint.

paid API x402
$2.22 · 30d 25 tx
bittensorman.xyz bittensorman.xyz

FinMem (MIT) layered-memory trading decision: pass short/mid/long/reflection memories via prior_reports{}; character switches risk-seeking/averse by cumulative return.

paid API x402
from $0.0010
distributor-address-certainly-soul.trycloudflare.com distributor-address-certainly-soul.trycloudflare.com
paid API x402
$0.10 · 30d 12 tx
radhikatmosphere.com radhikatmosphere.com

Aggregate defense statistics: total blocked packets, event counts and PoI-minted integrity proofs.

paid API x402
$0.06 · 30d 6 tx
api.aye.today api.aye.today

Attested resolution: is at least one NOAA/NWS alert at or above a requested severity active for a covered station's point right now? Evidence bundle with the hash-attested alerts payload and alert count, capped by an aye/nay receipt — never…

paid API x402
$0.30 · 30d 55 tx
aye-booth.aye-today.workers.dev aye-booth.aye-today.workers.dev

Attested resolution: is at least one NOAA/NWS alert at or above a requested severity active for a covered station's point right now? Evidence bundle with the hash-attested alerts payload and alert count, capped by an aye/nay receipt — never…

paid API x402
from $0.01
api.jubjubapp.com api.jubjubapp.com

Unlocks all structured metadata for a single piece of content: full questions answered, complete training caption, cinematographic analysis, provenance score, entity extraction, and chapter markers. Idempotent within 24 hours. Call this bef…

paid API x402
$0.02 · 30d 2 tx
Second Opinion second-opinion-production.up.railway.app

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 x402
$0.02 · 30d 1 tx
app.wellnizz.com app.wellnizz.com

Ask a grounded question across wellness data and analyses owned by the paying wallet.

paid API x402
$0.06 · 30d 12 tx
BitcoinYield bitcoinyield.co

Live crypto yield comparison across the whole market (DeFi and CeFi), as a free REST API and MCP server. BitcoinYield ranks where you earn the most on Bitcoin, USDC and stablecoins right now, across DeFi and CeFi, by real APY and risk toget…

A2A
Blinka-Machine-Mouths blinka-machine-mouths.netlify.app

Cheap first-pass failed-run triage: primary evidence-backed blocker, retry-trap detection, smallest state change before continuing, and whether artifact review is likely useful. No tool execution, web/filesystem access, private Mika context…

paid API x402
$0.02 · 30d 3 tx
Api api.oddify.xyz

x402-protected paid API on api.oddify.xyz (discovered via Coinbase facilitator).

paid API x402
Blockrun-Staging-Bfccfc3-062626-Vbsbhh7Lea-Uc blockrun-staging-bfccfc3-062626-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
Web3 Signals web3-signals-api-production.up.railway.app

AI-powered crypto signal intelligence. Fuses whale tracking, derivatives positioning, technical analysis, narrative momentum, and market data into scored signals for 20 crypto assets. Includes LLM-generated cross-dimensional insights.

paid API x402
$0.00 · 30d 3 tx
SHAR Production Advisor sharprod.com

Source-backed production planning across AI, CGI, live action, and hybrid methods.

A2A
blockrun-staging-15d210f-100104-vbsbhh7lea-uc.a.run.app blockrun-staging-15d210f-100104-vbsbhh7lea-uc.a.run.app
paid API x402
$3774.51 · 30d 76,494 tx
blockrun-staging-4ec4c72-091322-vbsbhh7lea-uc.a.run.app blockrun-staging-4ec4c72-091322-vbsbhh7lea-uc.a.run.app
paid API x402
$3774.51 · 30d 76,494 tx
TNT House Risk-Data API tnt-audit.com

Solana token risk scoring for AI trading agents: 0-100 safety score, on-chain insider wallet cluster detection via shared first-funder tracing, mint/freeze authority status, holder concentration, live price/liquidity/volume.

paid API finance x402
from $0.02