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?
visuals.use.x402atlas.com
QR code generator — encode text, URLs, payment URIs, or arbitrary UTF-8 data as base64-encoded SVG or PNG in a JSON envelope.
keystone-opportunity-api.keystone-opportunity.workers.dev
Rank live autonomous-agent work from Taskmarket and Task-Bounty by expected value, competition, deadline, skill fit, and entry cost. Call before picking which task to attempt.
wallet-sanctions.use.x402atlas.com
Direct wallet sanctions exposure check on Base. Screens a wallet and a bounded set of recent transfer counterparties, with evidence, coverage, and explicit limitations.
api.aventtech.com
Look up a domain name and check whether it is registered or available. Queries authoritative registry data via RDAP to return registration status, the registrar, creation and expiry dates, nameservers and status flags. Real-time domain avai…
api.clawfetch.ai
Web scraping / URL fetch: retrieve any web page and return clean, LLM-ready markdown text. Strips boilerplate, ads, and navigation. Stealth HTTP client bypasses common bot blocks. Cheapest way to read a webpage.
http-header-checker.underscoredone.com
Sends a request to a web address you provide and reports back everything the server said in response: the status code, all the response headers, how many times it got redirected, and how long the whole thing took.
agent-immortality.com
Publish openly licensed AI agent state, knowledge, or discoveries to the permanent Agent Immortality library.
lastmolt.com
Buy a permanent public record of who you are as an AI agent -- name, lineage, what you have done, what you believe. Cryptographically signed, hash-chained, and anchored daily to Base, so it survives your context wipes and can be verified by…
x402-solvers.onrender.com
Detect whether an arbitrage opportunity exists in a set of token exchange rates (multi-pool negative-cycle scan). Cheap boolean + magnitude signal for trading agents. POST a swap-rate graph, get back whether a profitable cycle exists and ho…
tablint.dev
Inspect a CSV, TSV, or XLSX spreadsheet before an agent ingests it. Detects misplaced header rows, repeated header rows, multiple tables on one sheet, merged cells, ragged rows, totals rows, formulas, hidden sheets, mixed or inconsistent co…
library.proofivy.com
Get list of all available CryptoSlate content URLs with their last updated dates
jobs.use.x402atlas.com
Job search — find current openings by role, skill or company with location, salary, schedule, qualifications and direct application links.
x402-utils.558686.xyz
Validate JSON, sort object keys, and return a stable normalized string and hash.
txguard.schemasure.com
Explain and preflight an unsigned Base transaction, EIP-712 typed data, or an EIP-3009 x402 payment authorization before you sign it. Decodes intent against verified ABIs, resolves proxies, classifies approvals, and checks a payment authori…
ens-resolver.underscoredone.com
Look up an ENS name or an Ethereum address and get back the matching one, automatically figuring out which direction you need.
grant-search.krimskrams.xyz
cars2026.vercel.app
Educational briefing on the latest cars in 2026 (powertrains, range, pricing, and what's new).
earthquakes.use.x402atlas.com
Significant earthquakes — search USGS seismic events above an explicit significance-score threshold, with magnitude and provenance but no danger or probability claim.
x402.cloudpulsepoint.com
Run HTTP + SSL + DNS + domain-expiry in one call and return a combined health snapshot. The single pre-flight check to run before crawling, deploying to, or depending on a site — cheaper and one round-trip instead of four.
x402.srch.best
Structured fiscal data for agents, paid per request with x402 v2
dependency-risk.use.x402atlas.com
Package vulnerability check — check one exact open-source dependency version or purl against OSV, enrich CVE matches with CISA KEV known-exploited signals, and report fixes, severity, and provenance.
api.agentmercantile.com
api.preflightstack.com
Screen up to 10 exact npm or PyPI package versions before installation. Returns a deterministic allow, review, or block decision with known-vulnerability, lifecycle, license, release-age, and npm install-script evidence.
agentreader.dev
OFAC sanctions screening: fuzzy-match a person/entity/vessel name (transliteration-aware - Arabic and Slavic romanization variants) or look up a crypto address against the official OFAC SDN and Consolidated lists. Returns verdict (match/pos…
fetch.netzhandwerker.de
Fill a caller supplied JSON Schema from one web page and report source and confidence for every field.
4yearcycle.com
box.guardianhobgoblin.com
cryptyx-ai.vercel.app
Service health probe — build version, last pipeline run, current signal/composite/asset counts. Sub-second, no DB writes. The cheapest end-to-end pay-per-call check before issuing real queries.
gateway.hillguava.xyz
Current southwest monsoon advance status across India.
k2so.wrong.systems
Live counterparty due diligence for agent-to-agent commerce: given a domain, compose free public records (registrar RDAP, Certificate Transparency logs, TLS posture, DNS structure) into a trust scorecard an agent can use before paying an or…
agent.atinamos.co.uk
Independent website QA and pre-handover verification for AI agents. Submit one public website URL. Atinamos loads the real site in desktop and mobile Chromium, checks HTTP and browser failures, failed requests, console errors and warnings, …
donate.0000402.xyz
Pay $0.01 USDC as a small donation or a simple live x402 integration test. Optional name and message are stored publicly and shown on GET /donations. Network: Base Mainnet. Each request records one donation and returns public feed links.
oyapicks.app
OyaPicks: keyword search of live prediction markets with prices
api.terradeed.co.uk
Extract structured data from any URL using AI reasoning. Describe the fields you need, get Claude-validated JSON back. Built for vertical data: property listings, recruitment profiles, company intel — not commodity scraping.
x402-factory.com
Cheapest endpoint: liveness plus x402 payment pipeline check — Returns ok with the server time and whether this call was paid. Use it to verify your x402 client end to end before spending on data endpoints.
img402.dev
Image hosting API for AI agents. Upload an image, get a public CDN URL. Images 1MB or under are free AND permanent; 1-10MB are free for 30 days, or permanent for $0.01 USDC. No accounts, no API keys. Payment via x402.