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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 473 AI 226 Verification 141 Finance 115 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 4465–4500 of 4,697
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.
ForgeKit useforgekit.dev

Agent-native media utilities: screenshot, PDF, OG, QR, ShipPack. MCP at /mcp. x402 USDC on Base.

paid API compute x402
from $0.0010
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
x402pulse-tau.vercel.app x402pulse-tau.vercel.app
paid API x402
from $0.02
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
tripguard-fare-intel.onrender.com tripguard-fare-intel.onrender.com

Premium real-time airfare intelligence for booking agents: price-drop prediction, fare-fraud verification and verified deal links for any origin-destination and date. POST a JSON body with a query string. Billed per call in USDC on Base.

paid API x402
from $0.12
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
Data Legion agents.datalegion.ai

Person + company enrichment APIs powered by Data Legion. Multi-rail agent payment.

paid API x402
from $0.01
EmblemAI hustle-v2-qddwxsqsl-emblem-062a811d.vercel.app

Trade crypto (and automate trading), swap tokens (DeFi/DEX), research markets, use your wallet, view NFTs, check balances, and send transactions across Solana, Ethereum, Base, BSC, Polygon, Hedera, and Bitcoin—including tokenized stocks.

paid API x402
from $0.0012
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
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
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