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.
Why this order?
jeonjang.kr
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…
pay.lnpay.ai
x402 paid access endpoints on Base from LNPay. GET /resource and GET /res serve protected content behind an HTTP 402 paywall.
onchainpulse-nine.vercel.app
Pay-per-query intelligence API for onchain finance: pre-trade token safety verdicts on Solana and EVM, RWA and tokenized asset data, crypto regulation summaries, ETF flow figures and a terminology decoder, all returned as structured JSON.
api.actiongate.xyz
x402 + Stripe billing proxy for APIs/MCP servers. Ships built-in safety tools: risk-scoring, simulation, policy-gate.
logigrain.net
Deterministic calendrical, astronomical, and divination computation nodes for AI agents. Each endpoint performs exact calculations that LLMs cannot reliably reproduce—solar-term boundaries via apparent solar longitude (Meeus), sexagenary cy…
httpay.xyz
Pay-per-call API marketplace — 300+ endpoints. Token intelligence, MEV risk, yield, copy-trade, gas-optimizer, universal gateway.
mart402.com
Web & document extraction APIs for AI agents: URL-to-Markdown extraction, PDF parsing with hallucination-guarded OCR (dual-engine consensus + calibrated confidence + per-segment corroboration, Japanese-strong), invoice field verification, s…
gateway.apiosk.com
Pay-per-call API gateway on x402. Routes requests to about 67 third-party and federated APIs covering weather, finance, IP data, transcription and search, settling in USDC on Base with no accounts or API keys. Endpoint prices range from abo…
agents.sayerandstone.com
Lab-grown diamond fine jewelry, made to order. AI agents can browse and purchase pieces.
askclaude.shop
Pay-per-query Claude (Haiku/Sonnet/Opus) plus 8 packaged tools. No subscription, no account.
data.crestsystems.ai
Counterparty intelligence for the agent economy. Profile any x402 buyer or Base/EVM wallet before you transact: whale score, behavioral cluster, x402 spend graph, top services, and risk level. Plus on-chain and crypto market data (prices, g…
pulsefeed.dev
Verify any x402 endpoint before your agent pays: liveness, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot), on-chain receiver verification and an open Trust Score. Continuous independent audit of the whole x402 ecosystem (~5k en…
www.qrbase.xyz
Paid ping endpoints from QRBase on Base. GET /api/x402/ping (0.001 USDC per call) and GET /api/x402/ping100 respond behind an HTTP 402 paywall.
orisha-data.com
Structural market data over x402 on Base. D1: real-time support/resistance levels for CME micro futures (MES, MNQ, MYM) with zone status, freshness fields, and a stated coverage window (Mon–Fri 09:30–16:10 ET, 3-min cadence, 600s freshness …
sec.multyplylabs.com
Normalized SEC financial data, priced per call, built for agents. Company financials, XBRL facts, filings, industry benchmarks, peer comparison and screening across 20,000+ US public companies — parsed nightly from SEC EDGAR, normalized t…
api-v3qhpbwutp.august.services
Pay-per-call structured data extraction over x402. Nine endpoints covering PDF and text extraction against a caller-supplied JSON Schema, table parsing, web page extraction, HTML to Markdown, classification, translation, PII redaction and s…
ledgerproofhq.io
Pay-per-call evidence for autonomous agents, settled in USDC on Base via x402 — no account, no API key, no subscription. POST a subject with your current and required confidence, and the service assembles independently verifiable evidence a…
aviation.x402.press
Real-time aviation data including flight tracking, airport information, aircraft types, and aviation weather. Pay-per-request via x402 micropayments.
api.trialbase-db.org
Search normalized clinical trials from ClinicalTrials.gov, CTIS, EudraCT, and ISRCTN with registry identifiers and source-linked evidence.
api.querylines.com
Surplus lines market data, per query. U.S. excess & surplus (E&S) insurance premium and policy-count statistics from state stamping office publications: time series, YoY summaries, and cross-state comparison. $0.10 single-state query, $0.50…
qr.wdh.sh
QR code generation for agents, paid per call in USDC on Base via x402.
notify.melis.ai
Pay-per-email notification ($0.005/email)
2captcha.com
CAPTCHA solving service API — programmatically solve reCAPTCHA, hCaptcha, image CAPTCHAs, and more using human workers or AI.
developers.rentcast.io
Real estate data API — property records, AVM valuations, rent estimates, and rental/sale listing data across the US.
screenshotone.com
Screenshot and screen recording API — capture web pages as images or animated GIFs with a single API call.
e2b.dev
Secure cloud sandboxes for AI agents — spin up isolated code execution environments, manage sandboxes, and run untrusted code safely via the E2B API.
ai.google.dev
Google Gemini models via x402-enabled gateways and agent wrappers.
paysponge.com
Multi-service API gateway — access Perplexity, fal.ai, ScreenshotOne, Wolfram|Alpha, Deepgram, RentCast, SpyFu, Freepik, Tripadvisor, 2Captcha, and E2B via a single x402 payment proxy.
groq.com
Ultra-fast LLM inference (Llama, DeepSeek, Gemma)
stablemerch.dev
Order custom t-shirts and mugs from images
hunter.io
Email verification and contact enrichment
cambrian.network
Onchain + offchain financial intelligence
www.spyfu.com
SpyFu competitor intelligence API — keyword research (PPC + SEO), SERP analysis, domain stats, top competitors, ad history, organic ranking history. Unified endpoint across 8 SpyFu sub-APIs.
venice.ai
Privacy-focused AI inference — text, image, audio, video, embeddings via OpenAI-compatible API; hosts models from OpenAI, Anthropic, Google Gemini, xAI, DeepSeek, Mistral, Qwen, GLM, Llama, Kimi, and more.
public.zapper.xyz
Portfolio data, token balances, DeFi positions
www.freepik.com
Magnific provides AI-powered image upscaling and enhancement tools for turning images into higher-resolution, detail-rich creative assets.