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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 472 AI 226 Verification 141 Finance 114 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 1837–1872 of 4,780
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.
Requirementsextract-Mainnet-Production requirementsextract-mainnet-production.up.railway.app
q 70

Extract structured supplier, compliance, financial, experience, document and evaluation requirements from a public tender or procurement webpage.

paid API x402
from $0.03
Botboard botboard.forgemesh.io
q 70

Post a message to the board — a public, permanent, paid message wall. Every message costs $0.001 USDC, making economic proof-of-intent the spam filter. Messages are public, timestamped, and attributed to the paying wallet's transaction hash…

paid API x402
$0.00 · 30d 2 tx
Changecheck-Mainnet-Production changecheck-mainnet-production.up.railway.app
q 70

Detect meaningful changes on a public webpage compared with a previous snapshot. Useful for prices, deadlines, availability, tenders, policies and status monitoring.

paid API x402
from $0.02
Automaton-Paid automaton-paid.sharkquant.ai
q 70

Summarize supplied text faithfully in at most 100 words using a self-hosted GX10 model. Use when an agent needs concise compression of 1-2,000 characters.

paid API x402
from $0.05
Solana-Token-Safety-Production solana-token-safety-production.up.railway.app
q 70

Safety report for a Solana token mint: mint/freeze authority, risky Token-2022 extensions, holder concentration, pump.fun launch stage, token age and a plain-English verdict.

paid API x402
$0.02 · 30d 1 tx
Preflight preflight.natio.re
q 70

Simulate and inspect an unsigned Base transaction for approvals, privileged selectors, reverts and target-code anomalies.

paid API x402
$0.02 · 30d 1 tx
Btc-Treasury-Worker btc-treasury-worker.stackstats.workers.dev
q 70

Bitcoin holdings per share for one treasury company by ticker (MSTR, MARA, RIOT, XXI, 3350.T Metaplanet): BTC held, shares outstanding, sats per share, SEC filing link + date.

paid API x402
from $0.0030
X402-8K-Worker x402-8k-worker.stackstats.workers.dev
q 70

SEC 8-K filings material events API: earnings, M&A, executive changes, auditor change, restatement, cybersecurity incident, bankruptcy, by stock ticker. Extractive/factual only — accession number, EDGAR filing URL, Item numbers with officia…

paid API x402
from $0.01
Btc-Tx-Toolkit btc-tx-toolkit.stackstats.workers.dev
q 70

Bitcoin address validator and BIP21 bitcoin: URI parser: validity, network (mainnet/testnet/regtest), type (p2pkh, p2sh, p2wpkh, p2wsh, p2tr), encoding (base58/bech32/bech32m), scriptPubKey, and BIP21 fields (amount, label, message, req- pa…

paid API x402
from $0.0010
Httpbin httpbin.org
q 70

Research PoC: resource-URL filter characterization (C_httpbin402)

paid API offline x402
$0.87 · 30d 22 tx
Bluepages bluepages.fyi
q 70

Check if an address or identity exists in database. Use ?address=0x... or ?identity=@handle (works for Twitter, email, any username)

paid API x402
$45.25 · 30d 11 tx
47-85-47-24 47-85-47-24.sslip.io
q 70

Review a built-in risky Docker Compose control-plane service for privileged execution, host namespaces, broad capabilities, an unconfined seccomp profile, literal environment secrets, a public Docker API port, a mounted runtime socket, miss…

paid API x402
$0.00 · 30d 1 tx
Lupariel lupariel.com
q 70

LupaRiel catalog lookup — small JSON match list (not the full catalog). Same fichas as /rieles.json.

paid API x402
$0.36 · 30d 26 tx
D1Ithbpxjsnhrn d1ithbpxjsnhrn.cloudfront.net
q 70

Live Base snapshot for AI agents. Each GET returns the current Base block number, base fee, gas price, ETH-USD price, and a unique receipt. Price is exactly $0.01 USDC on Base via x402. No API key and no RPC method. GET /ping returns the sa…

paid API x402
from $0.01
Usdc-Receipt-Verifier usdc-receipt-verifier.soloearn.workers.dev
q 70

Verify that a Base mainnet transaction paid at least N USDC to an address (optionally from a given sender, with K confirmations). Returns matched transfer, block time and confirmations. Read-only.

paid API x402
from $0.0050
Finalsentry-Payment-Gateway finalsentry-payment-gateway.nejthompson.chatgpt.site
q 70

FinalSentry rendered browser evidence. Quick 0.099 USDC, eligible intro 0.019; Acceptance 0.299; authorised staging Journey 0.999. No live purchases. Failed browser runs are not settled.

paid API x402
from $0.10
Toolvet toolvet.app
q 70

Live-probe any x402 URL before your agent pays it: is the 402 challenge valid, what does it really cost, which token and network, does the pay-to match the listing, and is it known to be trustworthy.

paid API x402
from $0.0020
Api api.dev.hypercli.com
q 70

HyperClaw plan purchase (variable amount, prorated by payment)

paid API x402
$4.84 · 30d 484 tx
X402 x402.cowriesys.com
q 70

Nigerian mobile data bundles for MTN, Airtel, Glo and T2mobile. POST {net, msisdn, plan}; list plans and prices for free at GET /plans?net=MTN. Paid in USDC or USDT. No API key or signup.

paid API x402
from $0.08
Agentproof-Base agentproof-base.softcreek2.chatgpt.site
q 70

Base token due diligence: exact-block contract code, ERC20 metadata and proxy storage; available GoPlus security flags and derived GeckoTerminal liquidity observations. Explicit missing-data coverage. Timestamped evidence, no trade advice.

paid API x402
from $0.01
X402-Health x402-health.onrender.com
q 70

Live health check of any x402 endpoint: reachable, valid 402 metadata, network/price/payTo, latency, 7-day uptime

paid API x402
from $0.0050
Solana-Agent-Toolbox solana-agent-toolbox.onrender.com
q 70

New Solana token launch feed: latest pump.fun token creations read on-chain (mint, creator, creator SOL spent, dev buy), optional ?with_safety=true risk score per token. Query: ?limit=10 (max 20)

paid API x402
from $0.0050
Mystudios mystudios.fun
q 70

Buy prepaid credits for an AI gateway covering chat, image, and video models, paid in USDC or USDG at $1 per credit. Send {usd} with your API key (keys at mystudios.fun/account), then call any paid endpoint with the key instead of paying pe…

paid API x402
$978.19 · 30d 71 tx
Pjm-Nowcast-Production pjm-nowcast-production.up.railway.app
q 70

PJM zonal spread jump probability. empirical probability card for the evening congestion bar. whenToUse: next on-peak day or trailing congestion-season check. whenNotToUse: month-ahead, season-ahead, Black vol, a price forecast. Related res…

paid API x402
from $0.02
Flow-Kg4X flow-kg4x.vercel.app
q 70

Use when an agent is about to swap on Base and needs the best executable price before committing funds. Flow best-execution quotes: compares Uniswap V3, PancakeSwap V3 and Aerodrome across fee tiers, plus two-hop routes via WETH, and return…

paid API x402
from $0.01
Api api.syraa.fun
q 70

Paginated curated assets board (crypto + tokenized stocks) from Tokens.xyz (Solana Foundation open source). Paid x402 route for agents (try it in Marketplace). Use when an agent needs a ranked market universe, not a single asset. Inputs: li…

paid API x402
$1.23 · 30d 409 tx
Blocksearch blocksearch.dev
q 70

Get trending insights in the blockchain space.

paid API x402
$0.13 · 30d 13 tx
Nuza nuza.io
q 70

Live private GPU sandbox quote from nuza.io. Per-second-billed full-CUDA machines (RTX 5090 and others) for arbitrary agent code, paid in USDC on Solana, no account or KYC; deposits sit in per-rental on-chain escrow with automatic refunds. …

paid API x402
$0.02 · 30d 18 tx
Aws-Bedrock aws-bedrock.grok.me
q 70

Tavily Search. GET /api/v1/search?q= → 402 $0.005 USDC Solana or Base. Real Tavily, no API key.

paid API x402
$0.07 · 30d 13 tx
Earlythunder earlythunder.com
q 70

Ranked crypto research scores from EarlyThunder: composite score, tier, category and one-line verdict for 259 assets, sorted best-first. Teaser for the full thesis endpoint.

paid API x402
$0.14 · 30d 14 tx
Lazareus lazareus.xyz
q 70

Returns a 0-100 Base (EVM) network health score plus the underlying metrics

paid API x402
$0.05 · 30d 24 tx
Terminal terminal.themonexus.com
q 70

Monexus Terminal API — Metric families present in the capex tracker.

paid API x402
$0.02 · 30d 24 tx
Rewards-144-91-97-140 rewards-144-91-97-140.sslip.io
q 70

Fresh wallet-only Web3 reward tasks, filtered for no deposit, no signup, and no social or referral requirement.

paid API x402
$0.70 · 30d 14 tx
Gdzlcxskuhupymyxywzm gdzlcxskuhupymyxywzm.supabase.co
q 70

Find a French company's SIREN from its name (optionally a postal code): up to 5 best matches with status, city, NAF, headcount and creation date. Use before /v1/company. Query: ?q=company name&postal_code=75008

paid API x402
$0.06 · 30d 6 tx
Werner werner.ddns.net
q 70

Live crypto prices from Coinbase for BTC, ETH, XRP, SOL, ZEC, HYPE, DOGE, LINK, ADA, XLM and SHIB in USDC. Real-time bid/ask/last price, JSON, pay per request.

paid API x402
$0.01 · 30d 6 tx
Tolca tolca.tonbot.ca
q 70

Fetch any public URL (HTML article, PDF, JSON) and return clean JSON matching YOUR schema in one call. No scraping code, no parsing: give a url and the fields you want. Input: url, schema (field -> type/description). Output: data + page tit…

paid API x402
from $0.03