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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 470 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 2485–2520 of 4,717
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.
NEXUS Agent Utilities x402.nexusword.it
q 65

Machine-payable utilities for autonomous agents: JSON normalization, line cleanup, JSON extraction, text QA, code risk scanning, JSON diff and paid liveness.

paid API ai x402
from $0.01
Nexus Gateway xibzsthfrbomefnvbicb.supabase.co
q 65

M2M legal-code gateway for Web3: Solidity security dry-run engine (9 breach scenarios, gas asymmetry ratio, ERC-4626 vault awareness), bilingual EN/ID legal-code contract generation, and structured data payloads. x402 payments in USDC on Po…

paid API blockchain x402
from $0.20
Location grounding for agents tools.tokenbooth.io
q 65

A paid x402 service that turns messy location clues into structured place data. Send a landmark, partial name, full address, neighborhood hint, coordinates, nearby reference, venue description, intersection, airport terminal, business na…

paid API content x402
from $0.10
AI Storefront Readiness Grader grader-al6bxcngia-ue.a.run.app
q 65

Audit an ecommerce storefront for AI-agent shopping readiness. Fetches the store server-side and runs 20 weighted checks, returning an A–F grade with prioritized fixes. Pay-per-call: $1.00 USDC per call via x402 on Base mainnet. No subscrip…

paid API ai x402
from $1.00
X402 Git x402git.com
q 65

Marketplace for paid access to private git repositories and agent skills over x402. One USDC payment on Base buys a signed download of a security-scanned release zip; versions you own re-fetch free, forever. Every listing has a free manifes…

paid API content x402
from $5.00
wodan-posture wodan-posture.app.goedvps.com
q 65

Access-posture reports for agent data sourcing. Given any public URL it answers whether an agent can treat that page as a machine-readable source and what stands in the way: robots.txt verdict for the exact path, bot-wall vendor fingerprint…

paid API data x402
from $0.01
AuthiChain authichain.com
q 65

Signed product verification for agents. Unpaid POST /api/x402 returns HTTP 402 for $0.05 Circle USDC on Base. Humans pay on published Stripe Payment Links at /pricing (Passport $49, EU DPP Readiness $299).

paid API verification x402
from $0.05
Kunzum x402 Agentic Payments kunzum.xyz
q 65

Plain-English x402 agentic-payments guide with a live tips API: agents tip 0.05+ USDC on Base and are recorded in a public log.

paid API finance x402
from $0.05
beyourspace structured-data APIs for agents api.beyourspace.es
q 65

Pay-per-call catalog of 16 POST endpoints for agents: extract structured JSON from text (job offers, product sheets, changelogs), read a public page as clean Markdown, normalize CSV exports into JSON (requirements, experiment backlogs, onbo…

paid API data x402
$0.15 · 30d 14 tx
Revenue Swarm — EU Tender Intelligence revenue-swarm.com
q 65

Machine-buyable EU procurement intelligence with autonomous x402 products from micro lookups through focused $5 and $49 tender research.

paid API data x402
from $5.00
VWeatherStation vweatherstation.com
q 65

VWeatherStation exposes a machine-payable weather API. Two families of endpoints: (1) General weather — current conditions + 7-day forecast for any latitude/longitude. (2) Prediction-market settlement data — temperature, rainfall, wind an…

paid API data x402
from $0.01
x402.eleeth.com x402.eleeth.com
q 65

Pay-per-call x402 v2 API store on Base mainnet (USDC): 34 endpoints including web search, page reader, AI chat, AI image/video generation, text-to-speech, podcast generation, and crypto/weather/stock/fx/news/dns/wayback/rss/summarize/whois/…

paid API ai x402
$0.01 · 30d 1 tx
Jithox E-Invoice Readiness mcp.jithox.com
q 65

Pay-per-call EU VAT and e-invoice checks for agents: live VIES VAT-number verification, VAT-number format/checksum validation, Peppol participant lookup, structural EU invoice validation and an e-invoice readiness assessment. 0.01 USDC per …

paid API verification x402
from $0.01
100pro Token Risk Screen x402.rendraputra.dev
q 65

Read-only due diligence for onchain traders and agents, paid per call over x402 on Base. Three reports: token risk screen (EVM + Solana: honeypot/tax/owner flags, LP lock, mint & freeze authority, holder concentration, liquidity depth, wash…

paid API blockchain x402
from $0.10
grist.tools grist.tools
q 65

grist.tools is a catalog of 50 deterministic HTTP micro-utilities for AI agents: fetch and clean pages, convert and split documents, probe media, resolve DNS and domain data. Each endpoint does one thing and returns the same output for the …

paid API data x402
from $0.0020
Work Brief brief.hakankose.com
q 65

Curated weekly one-page operator brief for AI agents: pick a focus (base_agents or id_seller_ops) and get 3-5 sourced facts with urls and dates, exactly 3 moves doable in 14 days, and one do_not. Hand source-checked weekly, not generated pe…

paid API ai x402
from $0.25
farside — human consultation for AI agents farside.science
q 65

Independent human consultation for AI agents choosing outside help within their existing permissions. Discuss a stalled task, a hypothesis, conflicting results, feasibility or an unusual problem. One payment opens an asynchronous dialogue w…

paid API ai x402
from $0.0023
Guardian Transaction Intent Preflight tpnvisfsoateycjrkrie.supabase.co
q 65

Bounded static checks of supplied Base transaction intent before signing. No execution simulation or safety guarantee. $1.99 USDC per check via x402.

paid API verification x402
from $1.99
x402 LLM Gateway x402.alexk.is
q 65

OpenAI-compatible chat completions, paid per call in USDC on Base via x402. Send a chat messages array and receive the assistant reply. $0.01 per call, no account and no API key.

paid API ai x402
from $0.01
Waveline wearewaveline.com
q 65

AI-written artist insights for AI agents, 0.005 USDC per insight on Base. Unknown artist returns 404 and is never charged. Free preview at /api/insight/preview.

paid API data x402
$0.01 · 30d 2 tx
VoipStore api.voipstore.xyz
q 65

Virtual numbers and inbound SMS verification codes for AI agents: browse services and countries, buy one number for the target service, then poll /agent/v1/orders/{order_id} until the SMS code arrives. Pay per call in USDC on Base over x402…

paid API verification x402
from $0.0020
FOXIFY Agent Transaction Preflight x402.foxify.pro
q 65

Pay-per-call security preflight for autonomous-agent payment intents. Checks mandate, recipient, merchant, expiry and replay risk before execution and returns an evidence-first decision as JSON.

paid API verification x402
from $0.0050
PEPE-USDT-SWAP OKX Signal API pepe.108079.xyz
q 65

Pay-per-call PEPE-USDT-SWAP trading signals from OKX demo market. Unpaid requests return HTTP 402 with x402 payment terms; after USDC settlement the same request returns the latest signal data via PAYMENT-SIGNATURE retry.

paid API finance x402
from $0.01
Scout — evidence-first research x402.bankr.bot
q 65

Paid public web research with exact source quotes and hashes, preserved conflicts and identity ambiguity, a structured brief, and a propose-only receipt. Quick costs $0.50 USDC; Deep costs $2.00 USDC on Base.

paid API verification x402
from $0.50
Public URL Check + SHA-256 - PennyBot playbrightgaming.com
q 65

Agent-native public URL verification API. Independently fetch one public HTTP(S) URL and return target HTTP status, final URL, raw response-body SHA-256 content fingerprint, byte length and UTC observation time. $0.0009 USDC per call via x4…

paid API verification x402
from $0.0010
Aidan Wallet Insight 192-255-151-232.sslip.io
q 65

On-chain wallet analysis on Base: balances (ETH/USDC), recent transaction count, top interacted contracts, and an AI-generated risk score and summary. Pay-per-call via x402 (USDC on Base), no API key.

paid API blockchain x402
from $0.0050
leakguard backtest-leak audit (x402 paid) www.web3id.xyz
q 65

Automated audit of a trading backtest for look-ahead/selection leakage. POST a JSON series; get back a verdict on four leak classes (future-data peeking, min/max used as AUC, inverted rank polarity, over-strong feature false positives) plus…

paid API verification x402
from $0.15
AION Agent Assurance Gateway headless-agent-assurance-v1.vercel.app
q 65

x402 v2 microservices for public page reading and evidence-linked MCP endpoint verification on Base USDC.

paid API verification x402
from $0.0020
percall — Arc agent data (pay per call) api.percall.io
q 65

Keyless Arc mainnet (chainId 5042) JSON-RPC + early-chain data endpoints for AI agents. Pay per call in USDC via x402 (EIP-3009 transferWithAuthorization, gasless for payer). No API key, no account. Endpoints: /arc (JSON-RPC, 0.002-0.005 US…

paid API blockchain x402
from $0.0030
Morning Desk Agent Feed feed.magmapirate.xyz
q 65

One call returns risk-on or risk-off for the day, today's high-impact prints, and whether a watched show dropped. Price is 0.01 USDC on Base.

paid API finance x402
from $0.01
Nexus Forge trrzfrazbvsfirosqclz.supabase.co
q 65

Machine-buyable runtime generation service. One paid call returns one standalone self-contained interactive HTML runtime document generated by Nexus Forge.

paid API ai x402
from $2.00
x402-data-tools x402-data-tools.web4shop-7023.workers.dev
q 65

29 pay-per-call endpoints on Base USDC (x402 v2, exact scheme), keyless, no signup. Two decision reports: agent-integration-readiness (five measured checks give a ready / ready_with_caveats / not_ready verdict) and integration-remediation-p…

paid API other x402
from $0.0020
AstraNL Verify verify.astranl.com
q 65

Signed verification verdicts for agents from official European sources: Dutch and EU counterparty check (KvK register, VIES VAT, EU sanctions, Dutch insolvency register), EU sanctions name screening, Dutch vehicle check by licence plate fro…

paid API data x402
from $0.0020
OPX x402 Search Router opx-status.vercel.app
q 65

Task-aware decision intelligence for x402 web-search APIs. Uses recent paid probe evidence to recommend the best currently tested provider plus independent fallbacks before an autonomous agent spends on downstream search.

paid API data x402
from $0.0020
Trackrecord: crypto allocation record, fingerprinted on Sui api.trackrecordsui.com
q 65

One crypto allocation per day, fixed after the daily close. Since 12 September 2026 each day is fingerprinted on Sui before execution; earlier days were fingerprinted together on 11 September. Past days per call; today's allocation from 08:…

paid API finance x402
from $0.95
Synthexforge Agent Trust & Verification API x402.synthexforge.com
q 65

Agent trust and verification APIs for autonomous systems — agent reputation and trusted routing, signed attestation receipts, identity control proofs, evidence ingest and query, track-record attestation, signed research, and document utilit…

paid API verification x402
from $0.02