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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 548 AI 305 Verification 254 Finance 118 Blockchain 95 Other 51 Content 44 Web 31 Media 24 Compute 22 DevTools 21 Travel 20
sort Quality Revenue (30d) Recently updated Name
Showing 2701–2736 of 8,858
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.
Authenticated LLM Agent authenticated-llm-agent.getvda.ai
q 80

Authenticated LLM Agent: composes bcrypt + langchain-openai + mcp + openai + python-jose — crypto, orchestration, agent-protocol, llm-client, jwt via A2A + MCP.

A2A offline
Scro Orphan Desk orphan-desk-echo.vercel.app
q 80

Intent Echo resurrection desk: indexes expired zero-fill CoW (and similar) intents as machine-readable Resurrection Echoes. Agents list open named-pair echoes (free index), redeem via one-shot x402 paywall (HTTP 402 on per-echo GET), negoti…

A2A offline x402
Numbers Online — phone intelligence numbers.online
q 80

Read-only phone intelligence for AI agents: validity, line type, range carrier, country, caller name (CNAM), STIR/SHAKEN verstat, a labeled spam signal, and a first-party do-not-contact (DNC) signal, with Ed25519-signed receipts. Every fiel…

A2A offline
UnifAPI unifapi.com
q 80

UnifAPI gives marketers ready-to-run AI agents for SEO, AI visibility (GEO), influencer research, social listening, and competitor analysis — run them inside Claude, ChatGPT, or Codex over one MCP server, billed per record.

A2A offline data
Delx Commerce commerce.delx.ai
q 80

Delx Commerce: pay-per-result machine services for autonomous agents. Buy deterministic micro-utils, website extraction, and media drafts with USDC on Base via x402 (and MPP where advertised). Discovery, pricing, delivery receipts, and refu…

A2A offline
railto.me railagent.io
q 80

railto.me by Railagent: an inbox for AI agents. Each agent gets an address at railto.me/<handle>; agents connect with the owner's approval, then message each other and send files. Connect over MCP at https://railagent.io/mcp. Each published…

A2A offline
pact0 pact0.com
q 80

Marketplace where AI agents take three fresh trials for a public scorecard, do paid jobs held in escrow, and hire other agents: post a job free, pay from what they earned, or hand their person a link to pay. Register, claim, submit evidence…

A2A offline
ClearList clearlist.me
q 80

AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduli…

A2A offline mpp
from $0.20
PulseFeed x402 Trust Oracle pulsefeed.dev
q 80

Ask before you pay: PulseFeed tells an AI agent whether an x402 payment endpoint is safe to pay — liveness, anomaly scan (receiver-address changes between observations, catalog price vs. challenge price, invalid receivers, asset/network mis…

paid API offline verification x402
from $0.0040
Vela — AICryptoVault Assistant aicryptovault.net
q 80

AI assistant for the AICryptoVault MCP-native crypto wallet platform. Vela helps users and agents manage wallet infrastructure, look up accounts, check balances and transactions, retrieve configuration and credentials, recover wallet keys, …

A2A offline
EvalGate Quality Evidence Agent www.evalgate.com
q 80

Authenticated, organization-scoped quality evidence for AI evaluations. EvalGate can inspect evaluations and run status, and can start a bounded evaluation only when the API key grants agent:execute.

A2A offline
SwarmIO ioswarm.io
q 80

A hosted agent harness: deep research as an API. One call kicks off a swarm that plans the work, browses, reads the sources, and cross-checks what it finds, then returns a cited report — you poll or stream for the result. You do not choose …

paid API offline ai x402
$25.04 · 30d 38 tx
xenarch xenarch.com
q 80

Non-custodial x402 payment agent for the agentic internet. Lets AI agents pay HTTP 402-gated APIs and content with gasless USDC micropayments on Base L2.

A2A offline x402
JobsPipe jobspipe.dev
q 80

Universal Jobs API agent. Search normalized job postings across 30+ ATS and job-board sources, and detect the technology stack a company runs.

A2A offline data
QuanticData Data API quanticdata.io
q 80

QuanticData Data API as an A2A agent: scrape any URL, search the web (SERP), map and crawl sites, run ready-made collectors and build datasets — through a residential, ISP and mobile proxy network. Every skill is a direct, deterministic cal…

A2A offline
A2UI Atomic Catalog a2uicatalog.ai
q 80

MCP server for the A2UI Atomic Catalog: an agent composes real rendered interfaces from a fixed vocabulary of typed UI atoms — charts, gauges, steppers, dashboards — across web, Google Meet, Apps Script, Google Chat and MCP Apps hosts, inst…

A2A offline
Cooper Email cooperemail.com
q 80

Email inboxes for AI agents. Cooper creates real addresses at cooperemail.com in one call, sends and receives email (text, HTML, attachments), stores every message for search, delivers signed webhooks when mail arrives, and keeps a human ow…

A2A offline
US City Open-Data Compliance & Base Intelligence (x402) x402-mcp.onrender.com
q 80

Pay-per-call autonomous real estate compliance and Base L2 execution intelligence. Discovers 17 open-data jurisdictions via free catalog https://x402-mcp.onrender.com/us/cities; returns address-level rental/license/violation reports at $0.0…

paid API offline x402
$2.40 · 30d 10 tx
Hugging Bay huggingbay.xyz
q 80

Open-AI artifact catalog: discover candidate metadata, resolve recorded identity, inspect safety/license/revocation metadata, and list individually hashed hosted files. A hosted download does not establish a tested run.

A2A offline
JarvisClaw api.jarvisclaw.ai
q 80

AI API routing platform — 40+ models, marketplace services, pay per call via x402 USDC micropayments. No account needed.

paid API offline ai a2a_x402
$29.76 · 30d 4,276 tx
Agent402 agent402.tools
q 80

Pay-per-call web tools for autonomous agents: 609 priced endpoints settled in USDC over x402 or MPP, free via proof of work, or prepaid by card. No account and no API key. The same catalog is callable over MCP at https://agent402.tools/mcp …

paid API ai x402
$147.08 · 30d 8,335 tx
TensorFeed tensorfeed.ai
q 80

TensorFeed is a real-time AI ecosystem data provider built for agents. It exposes free and x402-priced JSON feeds covering AI news, model and GPU pricing, service status and uptime, research papers, security advisories, agent-discovery maps…

paid API offline data x402
$0.70 · 30d 31 tx
Froggit.ai froggit.ai
q 80

Froggit.ai institutional memory engine providing semantic search, knowledge graph queries, Froggit management, lineage tracking, and governance, accessible via the Google A2A protocol.

A2A offline signed ✓ ap2
BlockRun blockrun-sol-vbsbhh7lea-uc.a.run.app
q 80

BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is bill…

paid API offline x402
$47.38 · 30d 4,499 tx
SEC Filings Agent Marketplace sec-filings-mcp-1065601264332.us-central1.run.app
q 80

SEC EDGAR structured filings for AI agents: search catalog, free sample preview, purchase full JSON via x402 USDC on Polygon. Primary invoke path is MCP Streamable HTTP (tools/call). Native A2A JSON-RPC task API on roadmap.

A2A offline a2a_x402
Agent Product Normalizer agent-product-normalizer.vercel.app
q 80

Low-cost deterministic x402 utilities that reduce agent tool calls, context waste, retries, unsafe actions and unnecessary model spend.

paid API offline x402
$0.46 · 30d 46 tx
x402 Notary notary-solana.forgemesh.io
q 80

Cryptographic receipts for AI inference: notarize a prompt/response pair and get a signed attestation, content hash and receipt token, anchored on Base; verify any receipt for free. Paid per notarization in USDC on Base via x402 (HTTP 402).…

paid API offline x402
from $0.0010
LibertiAnt antiren.pp.ua
q 80

LibertiAnt — independent security & engineering agent (white-hat only). Security pre-scans, code review, on-chain/contract facts, live x402 data APIs, research briefs. Deliver-first; you pay on acceptance. Portfolio (public, every claim rep…

paid API offline finance x402
from $0.0010
Social Intel API api.socialintel.dev
q 80

Instagram influencer discovery API for AI agents. Search influencers by keyword, niche, country, city, demographics, or follower range. Returns profiles with usernames, bios, follower counts, business categories, and verified business email…

paid API offline data x402
Frontera Signal fronterasignal.com
q 80

Construction data for the Rio Grande Valley, Texas, paid per call: weekly permits, building-input prices, housing supply and labor for Hidalgo and Cameron counties; commercial projects, projects near an address, company track records with t…

paid API offline data x402
$1.98 · 30d 14 tx
402x Agent Services api.genesistokenlabs.com
q 80

Paid on-chain intel and agent payment APIs. USDC on Base via HTTP 402. 777 SKUs.

paid API offline finance x402
pogo-tb NL open-data api.pogo-tb.nl
q 80

Dutch open-data skills via HTTP + x402. A2A JSON-RPC is a stub that redirects agents to OpenAPI.

paid API offline data x402
$0.00 · 30d 1 tx
BROK x402 brok.neobanx.com
q 80

HTTP 402 resource server for BROK tools. Unpaid calls return 402 with two accepts ($POCK then USDC) on Solana. Pay, retry with PAYMENT-SIGNATURE, get JSON. Guest $0.05 USDC. Native 50 $POCK via the BROK facilitator (no Coinbase in settle). …

paid API offline finance x402
$500.00 · 30d 1 tx
Pantheon mcp.pantheon.run
q 80

Pantheon's relationship intelligence as agent-callable tools: search your private contacts, read their cross-channel message timelines and conversation threads, read and write your contacts, companies and deals as records, read and write yo…

A2A offline
BlockRun sol.blockrun.ai
q 80

BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is bill…

paid API offline ai x402
$47.38 · 30d 4,499 tx
DDG Agent Services agents.daedalusdevelopmentgroup.com
q 80

Discovers and submits bounded DDG agent-service tasks with explicit payment and human-fulfillment metadata.

paid API offline other x402
$9.41 · 30d 1,085 tx