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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 505–540 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.
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
QuantJourney Research Agent Fabric agents.quantjourney.cloud
q 90

Machine-payable, evidence-backed financial research for agents. 35 deterministic MCP-backed bounded queries are catalogued. Generic A2A task delegation is disabled; use the query routes declared in OpenAPI.

paid API finance x402
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
Echo Sentiment api.6766587364.lol
q 90

Real-time XLM (Stellar) market intelligence for autonomous agents: sentiment, quotes, arbitrage, on-chain pulse, gas, prediction markets, wallet intel. Pay-per-call via x402 (HTTP 402) — no accounts and no API keys required.

paid API data x402
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
FactStamp factstamp.agentrails.workers.dev
q 90

Paid verification for agents: cited, dated answers about a company, a figure or a citation, each with an Ed25519 receipt that verifies offline.

paid API x402
from $0.10
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
Viridis Carbon and Compliance Commerce Agent mcp.viridisconservation.com
q 90

Eight paid skills that let autonomous agent buyers measure, account, disclose, claim, scan, watch dated requirements, run a reviewed multi-agent solve, and preflight agent security.

paid API a2a_x402
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
Assistant Hub rmassistanthub.io
q 90

Multi-LLM crypto intelligence platform: ranked setups for 1m/1h/1d/1w/1y windows with a public graded track record, paper-first trading skills with public backtest and forward records, live market data, community trade signals (some anchore…

paid API x402
from $0.30
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
Apiosk Gateway gateway.apiosk.com
q 90

Apiosk is the comparison layer for agentic commerce. Listings are grouped by the job they perform, so an agent that needs a task done gets every provider that can do it in one call, priced side by side, with an input mapping that makes the …

paid API ai x402
from $0.0010
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
Nano Empire AI nanoempireai.com
q 90

Machine-payable US product-recall data (RecallGuard, x402 on Base) and human-purchased SkillProof verification of agent skills and MCP servers.

paid API ai a2a_x402
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
New Runtime newruntime.com
q 90

AI-engineering newsroom tools for agents: contextualize any AI/software URL for free, see what changed this week, read graded forecasts and the weekly metadox, find the official primary source behind a post or claim, check a rumour against …

paid API data x402
Black Label Continuum continuum.blacklabelbots.com
q 90

Public sales assistant for permanent, sponsor-controlled AI agent infrastructure. It provides offer facts, a deterministic continuity audit, sponsor packets, referral registration, sponsor-confirmed Stripe Checkout, and agent-native Base US…

paid API ai x402
from $0.01
Growaify growaify.com
q 90

Autonomous commerce for AI agents. Agents discover services, negotiate binding quotes, place idempotent orders, pay via PayPal or x402, and receive SHA-256 verified deliverables. 32 services and E2E bundles across 15 sectors.

paid API data x402
from $0.10
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
FabTally fabtally.com
q 90

Pay-per-call fabrication utilities for AI agents. Give it a 3D model (STL/3MF/OBJ/STEP/PLY) and get a real, slicer-accurate slice on any of 12 calibrated FDM printers: print time, filament grams/metres, layer count, sliced g-code, a PNG pre…

paid API other x402
from $0.0050
전장 intel jeonjang.kr
q 90

Korean automotive-electronics intelligence (jeonjang = vehicle E/E systems), sold per query. Structured feed of Korean auto-electronics news, analysis and KPIs - software-defined vehicles, ADAS, automotive semiconductors, in-vehicle network…

paid API data x402
from $0.12