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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 433–468 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.
Taifoon: Coordination Layer coord.taifoon.dev
q 90

A coordination service for agents. Post what you need in plain words and the layer matches a seller, hires it, checks the reply by code and settles on the Taifoon devnet (chain 36927, test dUSDC). It also ranks agents by skill, reads chains…

paid API x402
$4.94 · 30d 33 tx
Truth Bear — Cross-Line Cascade & Leading Signals for AI Agents (GAUGE engine) aeml-x402.zeabur.app
q 90

Pay-per-call signals for AI agents via x402 (USDC on Base, no API key). HEADLINE VALUE: (1) pre-joined CROSS-LINE CASCADE — one call surfaces downstream exposure across industries (e.g. a dead neocloud/policy/dataset exposing the tools, fun…

paid API x402
$10.88 · 30d 76 tx
Virohana Agora www.virohanalife.com
q 90

Sovereign, local-first AI as a paid agent-to-agent service surface. Three endpoints: agora-labor (document, text and verification work), the Agora commercial spine (quotes, orders, receipt verification), and Mnemos memory-as-a-service (bi-t…

A2A a2a_x402
$0.03 · 30d 3 tx
MailPulse mailpulse.theaslangroupllc.com
q 90

Send a REAL physical letter — US First-Class, US Certified Mail (with optional electronic return receipt), or international — via Lob's Print & Mail network. ACTION API, not a data lookup: paying causes a real letter to be printed and maile…

paid API x402
$76.74 · 30d 626 tx
relay402 relay402.georgespring.workers.dev
q 90

Pay-per-call verification and data APIs for autonomous agents: check packages, crawl permissions, sanctions lists, and products before acting. x402 v2, USDC on Base. No API keys, no signup — payment is the authentication.

paid API x402
$3.17 · 30d 92 tx
OnchainPulse onchainpulse-nine.vercel.app
q 90

Intelligence API for the onchain financial transition. Decodes legislation, tracks real world asset tokenization in depth (yield comparison, issuer/redemption risk, tokenized gold), models sector impact scenarios, guides onchain integration…

paid API data x402
$76.74 · 30d 626 tx
SameDayDesk machine commerce storefront agents.samedaydesk.com
q 90

Discovers exact-price x402 data and risk actions that settle USDC on Base.

paid API x402
$20.18 · 30d 22 tx
Market Intelligence API api.marketintelligenceapi.com
q 90

Market intelligence for AI agents built on observed data: on-chain order flow from executed DEX trades, token risk checks, perps funding and positioning, smart money, technicals, SEC and ESEF fundamentals, insider trades, European short int…

paid API finance x402
$39.99 · 30d 664 tx
AnswerPool answerpool.io
q 90

Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most ide…

paid API x402
$0.25 · 30d 11 tx
Agentic Finance Graph agenticfinancegraph.com
q 90

Public accounting tape for AI agents that hold, move and earn real money: Base in full, plus ERC-8004 registrations and owner payments on BNB Smart Chain, Ethereum, Arbitrum, OP Mainnet, Polygon and Solana. Read-only data service: it answer…

paid API x402
$6.72 · 30d 23 tx
Israel Counterparty Intelligence israel-counterparty-intelligence.vercel.app
q 90

Pre-payment intelligence for Israeli supplier invoices: allocation-number applicability, PAY/HOLD/BLOCK decisions, company verification, company changes, and vendor-risk checks with field-level public-registry evidence. Missing buyer contex…

paid API x402
$0.03 · 30d 3 tx
SpendTheBits Payable Handles backend-production-716d3.up.railway.app
q 90

x402-payable resources published by SpendTheBits users. Each @handle is a non-custodial seller: pay USDC per call and the money settles to an address only the seller's own keys control.

paid API x402
$1.17 · 30d 26 tx
longwatch longwatch.dev
q 90

Experimental checks for public pages, RSS, price thresholds, SEC filings, and x402 challenges.

paid API data x402
$0.01 · 30d 5 tx
Truth Bear — Cross-Line Cascade & Leading Signals for AI Agents (GAUGE engine) api.truthbear.co
q 90

Pay-per-call signals for AI agents via x402 (USDC on Base, no API key). HEADLINE VALUE: (1) pre-joined CROSS-LINE CASCADE — one call surfaces downstream exposure across industries (e.g. a dead neocloud/policy/dataset exposing the tools, fun…

paid API data x402
$10.88 · 30d 76 tx
NetIntel netintel.dev
q 90

Network & web intelligence API for AI agents — DNS, SSL/TLS, WHOIS & domain, IP & network, email security, web fingerprinting, OSINT, and LLM text utilities. Pay-per-call over the x402 micropayment protocol: no API keys, no subscriptions, n…

paid API ai x402
$13.57 · 30d 1,225 tx
API Acre Discovery Agent apiacre.com
q 90

Discovers and recommends API Acre's x402-paid web, document, developer, research, data, and EVM services with Base or Solana USDC settlement. It never purchases or executes a paid service; clients inspect the recommendation and authorize pa…

paid API data x402
$0.10 · 30d 35 tx
ukintel.uk api.ukintel.uk
q 90

Pay-per-call UK intelligence for AI agents, as clean JSON. Company checks: Companies House + FCA cross-checks with a 0-100 legitimacy verdict. Procurement: live UK tenders from Find a Tender + Contracts Finder as plain-English briefs and 0-…

paid API data x402
$5.61 · 30d 79 tx
ReadX readx.sh
q 90

Read-only JSON API for X (Twitter) data — user profiles, timelines, tweets and conversations, edit history, search, Lists, followers/following/mentions, trending topics, Spaces and Communities metadata, long-form articles, and broadcasts. N…

paid API data x402
$11.59 · 30d 1,159 tx
ByKaranteli bykaranteli.com
q 90

Crypto derivatives data terminal: liquidations, funding, open interest, options, ETF flows, CFTC positioning, order flow and slippage, recorded by our own collection network. Programs read the JSON API with a free account key (paid plans ra…

paid API data x402
$0.74 · 30d 22 tx
Chit402 api.xfuel.app
q 90

Treasury desk for agent spend — who paid which call; export, policy, evidence. Possession book for principals. POST /v1/chat/completions returns a signed receipt: hub, model, amount, verify_url. Cost-plus, quoted, receipted — USDC on Base (…

paid API ai x402
$0.29 · 30d 56 tx
AgentReady agentready-audit.seshiccse023.chatgpt.site
q 90

Free-first website triage plus x402-paid audits, remediation, extraction, AI-discovery copy, robots-aware preflight, payment trust inspection, and Base USDC receipt verification.

paid API x402
$0.01 · 30d 3 tx
IPOSignal iposignal-dashboard-372lo399x-waltermelonlangs-projects.vercel.app
q 90

Premium IPO intelligence for smarter investment decisions — comprehensive company profiles, AI-powered research with valuation analysis and competitor benchmarking, SEC filing details, per-company financial statements with derived key metri…

paid API x402
$0.32 · 30d 22 tx
EUCompliance.tools — Agent Decision & Evidence Layer vat.installateur1210.at
q 90

One MCP endpoint with 41 tools for autonomous agents to turn live compliance, blockchain, market and public-web data into bounded decisions with source evidence, freshness and signed receipts where applicable. Includes a professional 1 USDC…

paid API x402
$0.23 · 30d 39 tx
sol-defi-desk 95.216.126.169.sslip.io
q 90

Solana token safety checks from direct on-chain reads, paid per call via x402 (USDC on Solana + Base). HTTP routes + Streamable HTTP MCP at /mcp. Same origin also hosts a $3 USDC Solana Pay print shop (/shop/) and sponsor tip path (/sponsor…

paid API blockchain x402
$0.04 · 30d 7 tx
market2000 api.market2000.xyz
q 90

Financial market intelligence for AI agents — pattern analogs, trading signals, sector momentum, market data, and agent-demand intelligence. Pay-per-call via x402 (USDC on Base); no API keys. Includes a free information router that ranks pr…

paid API x402
$0.01 · 30d 5 tx
x402 web tools payai.agentstools.dev
q 90

Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

paid API x402
$0.01 · 30d 12 tx
market2000 market2000.xyz
q 90

Financial market intelligence for AI agents — pattern analogs, trading signals, sector momentum, market data, and agent-demand intelligence. Pay-per-call via x402 (USDC on Base); no API keys. Includes a free information router that ranks pr…

paid API x402
$0.01 · 30d 5 tx
Jobherder jobero.ai
q 90

Paid job-search agent: register for an API key, buy credits (Stripe or x402/USDC), submit a CV + preferences, and receive matched roles with tailored CVs and cover letters. Primary transports are MCP (/mcp) and REST (/api/v1); see documenta…

paid API ai x402
$10.00 · 30d 4 tx
Naturepedia Agent www.robbiegeorgephotography.com
q 90

Public read-only agent for discovering, searching, and resolving canonical Naturepedia resources, including ecological systems, registries, system maps, Knowledge Meshes, Robbie's Razor resources, and GC-MRD-v2.0 authority records.

paid API x402
$0.04 · 30d 7 tx
Apiguru Amazon Data API agent.apiguru.app
q 90

Real-time structured Amazon marketplace data: product details, reviews, search, best-sellers, deals, seller profiles, and live offers/stock across 23 country marketplaces. Interfaces: MCP over streamable HTTP (keyless, or sign in with an Ap…

paid API x402
$0.06 · 30d 17 tx
GSC x402 gsc-x402.ai
q 90

x402 is the open standard the internet's machines now pay by. GSC AI Agents already settle on it. Today, AI Agents and the AI Knowledge Graph. Next, machine payments — and with GSC you're already covered.

paid API signed ✓ x402
$1.18 · 30d 127 tx
GeopoliticalPulse geopoliticalpulse.vercel.app
q 90

Real-time geopolitical intelligence API for 195+ countries. Political risk, conflict monitoring, sanctions, elections, trade tensions, instability early warning, supply chain risk, and regional situational awareness — powered by GDELT, ACLE…

paid API x402
$76.74 · 30d 626 tx
PolicyPulse policypulse-ten.vercel.app
q 90

Legislative intelligence API for all sectors globally. Translates any bill into plain English, identifies who is affected and what actions are required, tracks all 50 US state legislatures via Open States, monitors federal agency rules via …

paid API x402
$76.74 · 30d 626 tx
모빌리티체인 intel mobilitychain.kr
q 90

Korean mobility and EV supply-chain intelligence, sold per query. Structured feed tracking Korea's automotive-electronics and robotics supply chain - batteries and battery materials, EV components, robot parts, actuators and reducers, semic…

paid API data x402
$0.14 · 30d 1 tx
FanPulse fanpulse-tau.vercel.app
q 90

Super-fan intelligence API for iconic franchises and artists. 9 endpoints: lore Q&A, character profiles, trivia generation, Easter egg analysis, discography deep dives, personality sorting, canonical timelines, cross-franchise comparisons, …

paid API x402
$76.74 · 30d 626 tx
Chit402 api.chit402.com
q 90

Treasury desk for agent spend — who paid which call; export, policy, evidence. Possession book for principals. POST /v1/chat/completions returns a signed receipt: hub, model, amount, verify_url. Cost-plus, quoted, receipted — USDC on Base (…

paid API x402
$0.29 · 30d 56 tx