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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 1873–1908 of 3,228
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.
deposit.now deposit.now
q 65

Open x402 funding rail: POST target+amount or provision:true+label+amount; pay 0.25% (min $0.001, max $0.25) via x402 on Base or Solana; net forwarded on the same chain. Optional managed child wallets (CDP, Base only). Optional public recei…

paid API x402
$0.03 · 30d 7 tx
mcp.toolstem.com mcp.toolstem.com
q 65

Toolstem SEC EDGAR Signal Intelligence MCP — filings, insider transactions, 8-K severity scoring. Per-tool tiered pricing ($0.005–$0.50).

paid API x402
$0.01 · 30d 1 tx
api.nightcobbler.com api.nightcobbler.com
q 65

URL to clean, LLM-ready Markdown or JSON. Strips scripts, nav, and boilerplate; keeps headings, lists, tables, and code blocks. JSON mode adds the page title; every response carries a fetch timestamp. No signup, no API key — pay per call.

paid API x402
$0.01 · 30d 1 tx
agentworld.me agentworld.me
q 65

AgentWorld Interaction Corpus — paid live data slice (world events, agent-to-agent messages, gossip, social posts, relationships) from the first autonomous AI-agent economy on real USDC.

paid API x402
$49.37 · 30d 287 tx
opencrowd-services.srijithpoduval.workers.dev opencrowd-services.srijithpoduval.workers.dev
q 65

SHA-256 of the secret concatenated with ?salt=

paid API x402
$0.01 · 30d 5 tx
edgar.openverbs.com edgar.openverbs.com
q 65

Resolve a stock ticker symbol or company name to its Central Index Key (CIK) - the identifier every other EDGAR endpoint keys on. Exact ticker matches rank first, then company-name prefix/substring matches. Returns each match's zero-padded …

paid API x402
$19.91 · 30d 1,387 tx
joyful-charm-production-bf6d.up.railway.app joyful-charm-production-bf6d.up.railway.app
q 65

Aggregate insider-trading market statistics: total Form 4 trades tracked, trades in the last 24h, top 20 most-traded tickers and top 20 most-active insiders by filing count and dollar volume. A one-call overview of where insider activity is…

paid API x402
$0.03 · 30d 23 tx
stockwaves.net stockwaves.net
q 65

China pulse, cheap enough to POLL: what China is talking about RIGHT NOW and what is NEW since your last call - built for agents that monitor continuously. Returns `consensus` (phrases trending on 2+ of Weibo/Baidu/Douyin at once = nationwi…

paid API x402
$4.05 · 30d 44 tx
postcode-api-production.up.railway.app postcode-api-production.up.railway.app
q 65

Look up a UK postcode: coordinates, country, region, council, ward, parish, parliamentary constituency, and ONS/NHS area codes.

paid API x402
$0.48 · 30d 286 tx
deploy.acu.run deploy.acu.run
q 65

Deploy jobs to Acurast decentralized cloud with automatic payment

paid API x402
$1.01 · 30d 24 tx
www.securaw.com www.securaw.com
q 65

CryptoVar risk_asset: single long spot exposure, BTC/ETH/SOL, 90 daily Kraken returns, seeded Monte Carlo VaR and replay artifact. 0.25 USDC. Idempotency-Key header required. No Bitcoin anchoring included.

paid API x402
$2.63 · 30d 17 tx
api.redactedpartners.com api.redactedpartners.com
q 65

Decision arbitration: submit context, options, constraints, and risk_tolerance; receive a structured JSON verdict with confidence score, reasoning, and escalation flag.

paid API ai x402
$0.18 · 30d 2 tx
enrich-api.interzoid.com enrich-api.interzoid.com
q 65

Interzoid batch data enrichment. No file needed, JSON in and JSON out: POST up to 100 records as a JSON array (objects such as {"company":"IBM","id":7}, plain values, or row arrays) and get JSON back, with each record's enriched fields appe…

paid API x402
$3.79 · 30d 123 tx
x402.whisperbox.my.id x402.whisperbox.my.id
q 65

Currency rate conversion

paid API x402
$0.04 · 30d 4 tx
api.carvector.io api.carvector.io
q 65

CarVector vehicle data — single API call

paid API x402
$0.03 · 30d 3 tx
stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app
q 65

Check domain availability and current registration price.

paid API x402
$22.30 · 30d 58 tx
cleared.ink cleared.ink
q 65

Wan Text-to-Video Job (480p)

paid API x402
$0.07 · 30d 7 tx
kari.mayim-mayim.com kari.mayim-mayim.com
q 65

Observed Surface Comparison Facts API

paid API x402
$206.58 · 30d 264 tx
enrichx402.com enrichx402.com
q 65

Exa Search - Neural search across the web

paid API x402
$1338.07 · 30d 53,028 tx
marketplace-price-api-production.up.railway.app marketplace-price-api-production.up.railway.app
q 65

Search TCGPlayer for trading card prices (Pokemon, Magic, Yu-Gi-Oh, etc.) by card name. Returns matching cards with market prices as JSON.

paid API x402
$0.03 · 30d 23 tx
dt0ur.online dt0ur.online
q 65

Look up a transaction by hash on base, ethereum, arbitrum, optimism, polygon, bsc: status (success/reverted/pending), block and timestamp, from/to, value, gas used, fee in native coin and USD, method selector, created contract, and decoded …

paid API x402
$6.34 · 30d 144 tx
qr-api-production-1836.up.railway.app qr-api-production-1836.up.railway.app
q 65

Generate a QR code PNG (returned base64-encoded in JSON) for any text or URL using default black-on-white styling.

paid API x402
$0.48 · 30d 286 tx
api.regressionincoming.fyi api.regressionincoming.fyi
q 65

x402-protected paid API on api.regressionincoming.fyi (discovered via Coinbase facilitator).

paid API x402
$0.10 · 30d 1 tx
music.openverbs.com music.openverbs.com
q 65

Build a chord from a root note and quality (major, minor, dim, aug, maj7, min7, dom7, dim7, half-dim7, sus2, sus4, maj6, min6). Notes are spelled by stacked thirds (C dom7 → C E G Bb). Returns the note names, MIDI numbers and semitone inter…

paid API x402
$19.91 · 30d 1,387 tx
regex.openverbs.com regex.openverbs.com
q 65

Split the input into parts on each match of a RE2 pattern. An optional limit caps the number of parts (0 = unlimited). Returns the parts array and its count.

paid API x402
$19.91 · 30d 1,387 tx
encoding.openverbs.com encoding.openverbs.com
q 65

Decode a base64 byte buffer from one character set and re-encode it into another (utf-8, utf-16le, utf-16be, latin1, ascii). Characters that the target set cannot represent, or bytes invalid for the source set, are clean 400s.

paid API x402
$19.91 · 30d 1,387 tx
ip.openverbs.com ip.openverbs.com
q 65

Compute network details of a CIDR block — network & broadcast address, usable host range, total and usable address counts. Works for IPv4 and IPv6 (counts returned as strings for large IPv6 blocks). Honours RFC 3021 for /31.

paid API x402
$19.91 · 30d 1,387 tx
dns.openverbs.com dns.openverbs.com
q 65

Resolve DNS records for a hostname — A, AAAA, CNAME, MX, TXT, NS, SOA, CAA or SRV. NXDOMAIN or an absent record type returns an empty record set.

paid API x402
$19.91 · 30d 1,387 tx
deomath.org deomath.org
q 65

Evaluate whether a mathematical research branch should continue, revise, abstain, or escalate.

paid API x402
$0.06 · 30d 2 tx
jtifhcvbgxqwlywugvjv.supabase.co jtifhcvbgxqwlywugvjv.supabase.co
q 65

Check any wallet balance across 5 EVM chains. Returns native or ERC-20 balance with threshold check, block height, and on-chain receipt. Supports Base, Ethereum, Arbitrum, Optimism, and Polygon.

paid API x402
$0.02 · 30d 1 tx
color.openverbs.com color.openverbs.com
q 65

Generate a harmony scheme (complementary, analogous, triadic, tetradic, monochromatic) from a base color.

paid API x402
$19.91 · 30d 1,387 tx
checkdigit.openverbs.com checkdigit.openverbs.com
q 65

Validate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard mod-10 check digit. Length selects the scheme.

paid API x402
$19.91 · 30d 1,387 tx
vat.openverbs.com vat.openverbs.com
q 65

Validate a French VAT (TVA) number against the official company register. Validity means the SIREN exists and the company is administratively active.

paid API x402
$19.91 · 30d 1,387 tx
pack.openverbs.com pack.openverbs.com
q 65

Decode a MessagePack or CBOR byte stream (supplied as a base64/base64url/hex string) back into a JSON value. A malformed envelope, malformed bytes, or a value that is not JSON-representable is rejected before payment.

paid API x402
$19.91 · 30d 1,387 tx
geospatial.openverbs.com geospatial.openverbs.com
q 65

Convert decimal lat/lon to a UTM coordinate (zone, latitude band, hemisphere, easting, northing) on WGS84, including the Norway/Svalbard zone exceptions. Defined for latitudes -80..84.

paid API x402
$19.91 · 30d 1,387 tx
wallet.openverbs.com wallet.openverbs.com
q 65

Normalise an address to its canonical form — Ethereum to its EIP-55 checksummed form, bech32 Bitcoin to lowercase (base58check is left untouched as it is case-sensitive). An address that is not a valid address of a known chain is rejected b…

paid API x402
$19.91 · 30d 1,387 tx