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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 550 AI 305 Verification 253 Finance 119 Blockchain 95 Other 51 Content 44 Web 30 Media 24 Compute 22 DevTools 21 Travel 20
sort Quality Revenue (30d) Recently updated Name
Showing 1441–1476 of 8,850
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.
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
OneSignal documentation.onesignal.com
q 90

OneSignal is a platform for sending push notifications, emails, in-app messages, and SMS campaigns via a single API, Journey Builder, and a dashboard.

A2A
Dodo Payments Documentation docs.dodopayments.com
q 90

Documentation for Dodo Payments — the all-in-one payments, billing, and merchant of record platform for SaaS, AI, and digital products.

A2A
Graph Advocate docs.graphadvocate.com
q 90

The routing agent for onchain data. Ask in English, get the right subgraph + a live answer. x402-paid, ERC-8004 registered, A2A/MCP-native.

A2A
Limitguard docs.limitguard.ai
q 90

Limitguard is a lead validation service for lead generation agencies, sales agents and their clients: it checks the company behind each lead against the official business registers (KVK in the Netherlands, KBO in Belgium), EU VAT (VIES) and…

A2A verification
Mnemom Docs docs.mnemom.ai
q 90

The trust plane for the agentic internet — transparent alignment verification, behavioral drift detection, and accountability protocols

A2A verification
Aptos Explorer explorer.aptoslabs.com
q 90

Official Aptos blockchain explorer. Agents should fetch HTML or markdown pages over HTTPS and use published URL templates; this host does not expose an A2A JSON-RPC task endpoint. Browser agents can use WebMCP tools registered on the page. …

A2A
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
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
로봇인사이트 intel robotinsight.kr
q 90

Korean robotics industry intelligence, sold per query. Structured feed of Korea/Asia robot-sector news, analysis and KPIs - humanoids, physical AI, robot components (reducers, actuators, MEMS force-torque and tactile sensors), robot semicon…

paid API data x402
from $0.11
GSC Registry gsc-registry.ai
q 90

The GSC resolver — the working index of everything GSC operates. Ask it about a GSC AI Agent or surface, get verified facts back: signed records, key-attested against the estate keyring at dpuone.ai. 90 hostnames indexed.

A2A signed ✓
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
ACM-68000 acm-68000.org
q 90

The seven canonical signals agents resolve against. Append-only, non-breaking, non-substitutable. GS1-anchored. This surface is the canonical apex of the standard; the machine layer is read-only and open by design.

A2A signed ✓
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
Agent Client Protocol zed-685ed6d6.main-kill-isr.mintlify.me
q 90

The Agent Client Protocol (ACP) is a protocol that standardizes communication between code editors.

A2A
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
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
Collar Guardrail api.collarguardrail.com
q 90

Deterministic pre-trade risk layer for autonomous AI trading agents on Robinhood Chain. Returns allow / warn / deny verdicts with the reasons attached and a tamper-evident audit hash. MCP callers are evaluated at a fixed Tier 1 ceiling ($5,…

A2A
FractalAI PQC Proof Services fractalai.net.co
q 90

Pay-per-call post-quantum proof services for autonomous agents: ML-DSA-65 signatures, decision attestation, provenance seals, CBOM sealing, Know-Your-Agent verification and independent x402 settlement notarization. Every paid response carri…

paid API verification x402
$3.04 · 30d 109 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
Collar Guardrail collarguardrail.com
q 90

Deterministic pre-trade risk layer for autonomous AI trading agents on Robinhood Chain. Returns allow / warn / deny verdicts with the reasons attached and a tamper-evident audit hash. MCP callers are evaluated at a fixed Tier 1 ceiling ($5,…

A2A
NetIntel netintel-production-440c.up.railway.app
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 x402
$13.57 · 30d 1,225 tx
SM-AMP-CPG sm-amp-cpg.org
q 90

The Agentic Marketplace Protocol for Consumer Packaged Goods (AMP-CPG) is a deterministic, machine-readable protocol that enables an AI Agent to resolve the authoritative commercial endpoints for an identified product in a defined market. I…

A2A signed ✓
Pinecone Docs docs.pinecone.io
q 90

Official documentation for Pinecone's trusted AI knowledge platform, including Pinecone Database, Pinecone Assistant, and Pinecone Nexus.

A2A
FindPulse findpulse-omega.vercel.app
q 90

Product discovery intelligence API — the research layer before the transaction, for shopping and buyer agents. One-call pre-purchase buy/wait/avoid verdicts with official CPSC recall screens, gift finding, Best-product-for-use-case recommen…

paid API x402
$76.74 · 30d 626 tx
DiezXSuite app.diezx.ai
q 90

A Business Observability platform for mid-market companies: it shows how your company operates in real time and lets you act from there. diezX connects once to a company's existing systems (ERP, CRM, HR, Google Workspace) and builds a live …

A2A
Harvey Intel agents.rugslayer.com
q 90

MCP server for AI agents providing Solana token safety scoring (DrainBrain). Pay per call with USDC or use API keys.

A2A
RemittancePulse remittancepulse.vercel.app
q 90

Global remittance intelligence API. 9 endpoints covering 200+ corridors: corridor analysis (best providers, fees, receive options), provider comparison with true total cost including FX markup, live ECB mid-market rate analysis, receive-cou…

paid API x402
$76.74 · 30d 626 tx
ArbiPulse arbipulse.vercel.app
q 90

The arbitrage layer for every market. 18 endpoints finding the same thing at two prices — prediction-market cross-venue spreads (Polymarket×Kalshi), GPU compute rental arbitrage, AI inference token-price arbitrage, stablecoin parallel-rate …

paid API x402
$76.74 · 30d 626 tx
PyAI Developers docs.pyai.com
q 90

Build voice agents through the console or API, powered by Omni. Agents, Hear, Speak, Clone, Cast, and Dub documentation.

A2A
EduPulse edupulse-xi-blond.vercel.app
q 90

The universal AI tutor and exam prep API. Every subject. Every exam. Every certification. Every language. Covers all K-12 subjects, all college courses, all professional licensing exams (NCLEX, Bar, CPA, LSAT, MCAT, Series 3/7, USMLE, CFA, …

paid API x402
$76.74 · 30d 626 tx
HerbaPulse herbapulse.vercel.app
q 90

Plant and traditional medicine intelligence API. 7 endpoints: cross-cultural herb profiles (TCM + Ayurveda + Western herbalism), herb-drug interaction checker, supplement label decoder, natural skincare ingredient analysis, cross-cultural r…

paid API x402
$76.74 · 30d 626 tx
FieldPulse fieldpulse-tan.vercel.app
q 90

Global precision agriculture intelligence API. Synthesizes satellite NDVI, MET Norway weather forecasts, NASA POWER soil and climate data, USDA WASDE, FAO, and EPPO into actionable intelligence for growers, traders, agronomists, and AI agen…

paid API x402
$76.74 · 30d 626 tx