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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 549 AI 305 Verification 252 Finance 119 Blockchain 95 Other 51 Content 44 Web 30 Media 24 Compute 22 DevTools 21 Travel 19
sort Quality Revenue (30d) Recently updated Name
Showing 109–144 of 305
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.
Cloud Natural Language API language.google.gateway-402.com
q 65

Analyze text with Google NLP: sentiment, emotion, named entities, entity salience, content categories, moderation categories, syntax, and all-in-one annotation. Supports multilingual text analytics for documents, reviews, tickets, and artic…

paid API ai x402
from $0.0010
Generative Language API (Gemini) generativelanguage.google.gateway-402.com
q 65

Use Google Gemini models for text generation, multimodal image/audio/video understanding, chat, embeddings, code generation, JSON output, function calling, cached context, file search, grounding with Google Search, and fine-tuned models.

paid API ai x402
Cloud Document AI API documentai.google.gateway-402.com
q 65

Extract structured data from PDFs, scans, and document images using OCR and ML. Handles invoices, receipts, forms, contracts, tax documents, IDs, and custom schemas, returning text, tables, entities, fields, and confidence signals.

paid API ai x402
from $0.0015
Alibaba Cloud Model Studio Speech Recognition speech.alibaba.gateway-402.com
q 65

Transcribe audio files with Qwen ASR through Alibaba Cloud Model Studio's asynchronous speech recognition API.

paid API ai x402
from $0.0000
Alibaba Cloud PAI Model Gallery paimodelgallery.alibaba.gateway-402.com
q 65

Search and retrieve data with Alibaba Cloud PAI Model Gallery, including retrieve the ModelGallery model list, for search and discovery workflows.

paid API ai x402
from $0.0010
Alibaba Cloud Model Studio (Qwen) modelstudio.alibaba.gateway-402.com
q 65

Alibaba Cloud Model Studio's OpenAI-compatible API for Qwen chat, reasoning, and code-generation models.

paid API ai x402
from $0.05
Alibaba Cloud IVPD ivpd.alibaba.gateway-402.com
q 65

Run image and video analysis or generation with Alibaba Cloud IVPD, including resize Image, element detection, and style Transfer.

paid API ai x402
from $0.0010
Alibaba Cloud Intelligent Speech Interaction intelligentspeechinteraction.alibaba.gateway-402.com
q 65

Process speech and audio with Alibaba Cloud Intelligent Speech Interaction, including short-form voice command recognition, conversational speech input, and voice search, for transcription and voice workflows.

paid API ai x402
from $0.0014
Alibaba Cloud Image Segmentation imageseg.alibaba.gateway-402.com
q 65

Run image and video analysis or generation with Alibaba Cloud Image Segmentation, including sky Replacement, facial Feature Segmentation, and fine-Grained Mask Segmentation.

paid API ai x402
from $0.0010
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
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
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
GPUOps AI Inference ai.gpuops.io
q 65

OpenAI-compatible AI inference API with 63 models including Llama 3.3 70B Mistral Qwen Phi DeepSeek Flux image gen and TTS. Pay-per-call with USDC on Base via x402. No API keys required agents pay and call directly. From 0.001 per call.

paid API ai x402
agent-dust home.chrz.dev
q 65

Tiny x402-paid oracles for agents: Base/Solana wallet preflight, Solana rent recovery scan, x402 echo, x402 facilitator health matrix, and an x402 payment-required linter.

paid API ai x402
from $0.0050
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
OpenZoo api.openzoo.fun
q 65

OpenAI-compatible LLM inference paid per request via x402 — no account or API key. Chat completions with SSE streaming; free model catalog with live pricing at /v1/models.

paid API ai x402
from $0.0000
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