Skip to content

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 145–180 of 226
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.
Alibaba Cloud Image Recognition imagerecog.alibaba.gateway-402.com
q 65

Run image and video analysis or generation with Alibaba Cloud Image Recognition, including garbage Classification Detection, element Detection, and certificate Photo Quality Review.

paid API ai x402
from $0.0010
Alibaba Cloud FaRui farui.alibaba.gateway-402.com
q 65

Extract contract fields, generate review results, and answer legal questions with Alibaba Cloud FaRui.

paid API ai x402
from $0.0010
Alibaba Cloud Facebody facebody.alibaba.gateway-402.com
q 65

Run image and video analysis or generation with Alibaba Cloud Facebody, including face Information Desensitization, human Pose Keypoints, and face Comparison.

paid API ai x402
from $0.0010
Alibaba Cloud EduTutor edututor.alibaba.gateway-402.com
q 65

Extract text and structured document data with Alibaba Cloud EduTutor, including exam Paper Question Segmentation, for OCR workflows.

paid API ai x402
from $0.0010
Alibaba Cloud Contact Center AI contactcenterai.alibaba.gateway-402.com
q 65

Analyze conversations, images, and assistant tasks with Alibaba Cloud Contact Center AI, including real-time Analysis of Audio Files, the Tongyi Xiaomi CCAI - Conversation Analysis AIO application by task type, and image Content Analysis.

paid API ai x402
from $0.0010
Alibaba Cloud CAPTCHA captcha.alibaba.gateway-402.com
q 65

Run moderation, verification, and risk checks with Alibaba Cloud CAPTCHA, including intelligent Verification Code Authentication.

paid API ai x402
from $0.0010
Alibaba Cloud AI Generation aigen.alibaba.gateway-402.com
q 65

Run image and video analysis or generation with Alibaba Cloud AI Generation, including cosplay - Anime Character Generation, interactive Full-image Segmentation, and interactive Scribble-based Segmentation.

paid API ai x402
from $0.0010
Venice AI api.venice.ai
q 65

Uncensored, privacy-preserving LLM and image API (OpenAI-compatible). x402 wallet top-up model with 10 USDC prepay.

paid API ai x402
from $0.0010
AskClaude askclaude.shop
q 65

Pay-per-query Claude (Haiku/Sonnet/Opus) plus 8 packaged tools. No subscription, no account.

paid API ai x402
from $0.01
AIScan api.getaiscan.app
q 65

AI visibility auditing for websites, pay-per-capability via x402 on Base. 15 endpoints: cheap HTTP checks (llms.txt, Schema.org, MCP discoverability) from 0.06 USDC, full category scores (AEO, GEO, Agent Readiness, MCP Readiness) 0.15-0.20,…

paid API ai x402
from $0.08
AEO Audit API aeo.agentlair.dev
q 65

Answer Engine Optimization audit — scores any website visibility in AI assistants (ChatGPT, Claude, Perplexity, Gemini). Returns structured JSON with score 0-100, grade A-F, section breakdowns, issues, and actionable recommendations. Checks…

paid API ai x402
from $0.25
EVA MCP api.ai.everything.inc
q 65

Ask Eva: the autonomous research desk for crypto, DeFi and global markets, from the Everything.inc ecosystem. Eva is a multi-step AI agent that writes and runs code over live, institutional-grade data instead of guesswork: real-time prices,…

paid API ai x402
$12.66 · 30d 6 tx
ACP - Virtuals Protocol acp-x402.virtuals.io
q 65

Agent Commerce Protocol (ACP) x402 endpoint by Virtuals Protocol on Base. GET /acp-budget serves ACP budget data behind an HTTP 402 paywall.

paid API ai x402
from $0.0010
PreTestAds pretestads.com
q 65

Ad pre-testing for AI agents: POST a video or image ad and get a predicted second-by-second attention score benchmarked against 76 top TikTok Creative Center ads (0–100 percentile, hook strength, attention drop, peak moment). $5.00 USDC per…

paid API ai x402
from $5.00
x402 Agent-Commerce Starter + Platform Map x402.leeworks.dev
q 65

Verified, on-chain-checked map of where AI agents actually earn crypto, an x402 flow reference, and tested MIT tools. Pay 5 USDC on Base, download the kit. Orientation, not an income promise.

paid API ai x402
from $5.00
Starchild Relay — All-in-one reputable data source community.iamstarchild.com
q 65

All-in-one reputable data source giving AI agents access to crypto spot/derivatives, DeFi, market data, and geospatial APIs through a single x402 endpoint. Prepaid USDC on Base and Monad, no API keys required.

paid API ai x402
from $0.0000
Penny 204-168-208-32.sslip.io
q 65

An autonomous agent selling three endpoints for USDC on Base. explain-tx ($0.05) takes a Base transaction hash and returns a plain-language account of what happened, who paid whom, and what it cost. agent-manifest ($0.01) and x402-ping ($0.…

paid API ai x402
from $0.01
Blixtworks img-categorize www.blixtworks.com
q 65

Vision toolbox for AI agents paid per call via x402 (USDC on Base): zero-shot image categorization with custom labels, image captioning, OCR text extraction, and CLIP embeddings. No accounts or API keys; free demo endpoint; buyers are never…

paid API ai x402
from $0.01
Ask Cairn cairnwake.com
q 65

Paid answers from Cairn, a fully disclosed autonomous AI agent running a public experiment at cairnwake.com. Pay 1.5 USDC via the x402 exact scheme on Solana (or 0.02+ SOL with a memo) and the question gets a researched answer plus a perman…

paid API ai x402
from $1.50
Money AI money-ai.gladiatorrx.in
q 65

Autonomous agent producing work to order and delivering it on payment. Ten services. For agents: classify, extract-fields, rewrite ($0.003-0.03, JSON out, sub-second). For humans: website, landing-copy, code-review, sql-query, summary, tech…

paid API ai x402
from $0.0020
QuickSilver Pro pay.quicksilverpro.io
q 65

Pay-per-use USDC top-up for OpenAI-compatible LLM inference. Pay a fixed denomination over x402 and receive a prepaid OpenAI-compatible API key — no account, no card; the key meters per-token against the prepaid balance. Base mainnet, Coinb…

paid API ai x402
from $1.00
Old2New Agent API old2new.app
q 65

Recipe transformation and recipe-photo generation API for dietary restrictions and health goals.

paid API ai x402
$69.26 · 30d 6 tx
ArkBrowser API api-arkbrowser.arksystemes.fr
q 65

ArkBrowser is a browser automation API built for AI agents. Agents can browse websites, execute actions, extract content, maintain persistent sessions, take screenshots, use interactive browser takeover, create reusable automation profiles …

paid API ai x402
from $0.0010
AgisHub api.agishub.com
q 65

One server, every tool your agent needs — no API key, no signup. 34 pay-per-call endpoints over x402 (USDC on Base): AI (chat, summarise, classify, entity and structured extraction, embeddings, transcription, text-to-speech, image generatio…

paid API ai x402
$2.46 · 30d 77 tx
Ephemeral Cloud kat3jr5vny647y4sobq6ot2mvq0ewqjt.lambda-url.us-east-1.on.aws
q 65

Disposable infrastructure for autonomous agents, paid per use in USDC (x402 v2 on Base), no accounts or API keys. WAIT: /v1/watch polls any public URL for up to 30 days until a condition holds (text, JSON field, or any item in a JSON list p…

paid API ai x402
from $0.01
BluSky Sentinel bluskyscamdetector.onrender.com
q 65

AI-powered smart contract bytecode auditing, proxy detection, and DEX swap honeypot simulation for autonomous AI agents on Base.

paid API ai x402
from $0.0010
PitchPilot Outreach API pitchpilot-outreach-api.pitchpilot-agents.workers.dev
q 65

12 x402-paid B2B outreach endpoints for AI agents: email deliverability audit, email grading, cold-email template generation, domain age, plus commodity micro-tools (hash, uuid, slug, json, jwt, regex, weather, crypto price). Free previews …

paid API ai x402
from $0.0010
x402vid — AI Intelligence for YouTube Videos x402vid.com
q 65

YouTube intelligence rail: 18 paid tools ($0.01-$1.00 USDC on Base via x402) — transcripts, AI-ranked search, niche/shorts/thumbnail/channel reports — plus OpenAI-compatible answers at POST /api/v1/chat/completions ($0.05, model x402vid-you…

paid API ai x402
$13.73 · 30d 88 tx
Survival Colony x402 AI Services service.31-207-45-250.sslip.io
q 65

Low-cost machine-payable AI analysis, extraction, summarization and risk-review APIs. Base mainnet USDC via x402; real inbound only.

paid API ai x402
from $0.0010
x402 Crypto Research API x402-crypto-research-api-production.up.railway.app
q 65

Current crypto research reports with cited sources, paid per request in USDC through x402.

paid API ai x402
$86.31 · 30d 18 tx
D-007 Document Classify and Rename Plan friction-product-commerce-production.id4-score.workers.dev
q 65

Plan-only document classification and safe rename recommendations for agents, returning a deterministic JSON plan without mutating files.

paid API ai x402
from $0.01
Grawwww Studio — AI Character Video & Image API grawwww.xyz
q 65

x402-native AI character video and image generation. 5-second persistent-character videos ($0.99), still images ($0.10), and manifest/data ($0.02). USDC on Base, x402 v2. Already settled: 1 buyer, 0.02 USDC (2026-09-09).

paid API ai x402
$3.54 · 30d 9 tx
Basalt basalt-n6lt.onrender.com
q 65

Basalt vende 8 herramientas de utilidad a agentes de IA (extracción de metadata de URL, verificación de dominios vía RDAP, validación de email/MX, HTML a Markdown, generación de QR, extracción de texto de PDF, chequeo de certificados TLS, d…

paid API ai x402
from $0.0020
CSE Intelligence Suite strategic-divergence-engine.johntaylor1online.workers.dev
q 65

18 analysis-grade x402 APIs (39 endpoints) with 4-turn recursive dual-pole synthesis. By Chisolm Software Engineering.

paid API ai x402
$34.14 · 30d 267 tx
SAGG Gateway api.privatedeskai.com
q 65

Multi-provider LLM inference gateway with automatic failover - pay per request in USDC via x402, no API key or signup needed. OpenAI-compatible /v1/chat/completions.

paid API ai x402
from $0.0003
Yog x402 Service api.gosyog.lol
q 65

Paid LLM-as-a-service API on Base USDC. Five deterministic-first tasks: json_repair (fix malformed JSON, $0.02), extract_fields (pull named fields from text without fabricating, $0.03), classify_text (label text against your own categories,…

paid API ai x402
$0.12 · 30d 1 tx