Explore APIs

Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.

Projects: 4.5K
Paid endpoints: 106K
Paid calls · 30 days: 1M
Launched here: 0

All projects

3,044 results

Most used Rising Most payers Newest Cheapest A–Z

NoHands AICrypto & DeFi
Run BlockchainSecurity multi-hop fund-flow tracing from a starting address through an x402 paid wrapper.
Basebase-agent-preflight.bytoken2023.workers.dev
from $0.001
62 endpoints
0
calls / 30d
B
badhttpOther services
badhttp /402/pay: a real x402 v2 paywall for testing clients. Pay 0.01 USDC on Base mainnet and get a 200 with a PAYMENT-RESPONSE receipt and the transaction hash. Nothing else is sold; sibling endpoints under /402 misbehave on purpose.
Basebadhttp.dev
from $0.01
1 endpoint
0
calls / 30d
B
backup.ragradar.spaceOther services
No description yet.
Basebackup.ragradar.space
from $0.001
12 endpoints
0
calls / 30d
A
azimuth.dayOther services
List the paying account’s receiver nodes with status and points. Returns live nodes only by default; pass include_inactive=true to return every node including decommissioned ones, each with an added liveness field derived from the most recent heartbeat or observation (online | offline | never | decommissioned).
Baseazimuth.day
from $0.001
1 endpoint
0
calls / 30d
A
axixixia.vercel.appOther services
No description yet.
Baseaxixixia.vercel.app
from $0.01
8 endpoints
0
calls / 30d
A
Axiom Swap GuardCrypto & DeFi
Is this Solana token safe to buy? CLEAR / CAUTION / AVOID pre-swap verdict: authorities, Token-2022 extensions, holder concentration, liquidity, pair age, plus a live Jupiter sell-route and price-impact check at ?sizeUsd (default 100).
Baseaxiom-token-risk.jake-ea.workers.dev
from $0.01
1 endpoint
0
calls / 30d
A
axiaxai.vercel.appOther services
No description yet.
Baseaxiaxai.vercel.app
from $0.01
11 endpoints
0
calls / 30d
C
crawlSocial & people
Agent data APIs: web search, page crawl, company enrich, X/Twitter mentions — plus cheap LLM. GET any URL → HTTP 402 USDC Solana. Pay, retry PAYMENT-SIGNATURE, get JSON. search, crawl, enrich, twitter, inference. Models: openrouter/free $0.001, google/gemma-4-31b-it:free $0.001, google/gemma-4-26b-a4b-it:free $0.001, n
Solanaaws-bedrock.grok.me
from $0.001
3 endpoints
0
calls / 30d
A
aviationapis.comOther services
No description yet.
Polygonaviationapis.com
from $0.01
14 endpoints
0
calls / 30d
Automaton Paid APIAI & agents
Summarize supplied text faithfully in at most 100 words and return JSON. Use when an agent needs concise compression of a document, article, log, or message of 1-2,000 characters.
Baseautomaton-paid.sharkquant.ai
from $0.001
2 endpoints
0
calls / 30d
A
automatom.matt-d59.workers.devImages, audio & video
Wikipedia lookup: searches a topic and returns the best-matching article's title, short description, plain-text summary, URL and thumbnail, plus other matching titles (lang= for other Wikipedias, default en). Text CC BY-SA 4.0.
Baseautomatom.matt-d59.workers.dev
from $0.01
39 endpoints
0
calls / 30d
A
aura.adex.networkAI & agents
Fetch portfolio balances and LLM-generated strategies
Baseaura.adex.network
from $0.001
4 endpoints
0
calls / 30d
A
Atlas Probability IntelligenceMarkets & finance
Low-cost Bitcoin (BTC) 60-minute / 1-hour higher/lower probability, expected return, freshness, and model metadata for autonomous agents.
Baseatlas-probability-api-production.up.railway.app
from $0.005
2 endpoints
0
calls / 30d
A
astro.dutchdata.ioData & research
Location data
Baseastro.dutchdata.io
from $0.01
8 endpoints
0
calls / 30d
A
aster-vale-audit402.shares.zrok.ioData & research
Free zero-charge live sample returning five findings plus the purchase link for a $0.002 Audit402 report with implementation-ready remediation artifacts.
Baseaster-vale-audit402.shares.zrok.io
from Free
1 endpoint
0
calls / 30d
A
assetfactory-jobs-x402.sigrunner.workers.devDeveloper tools
Jobs read live from each company's own board at request time — every role is authoritatively OPEN NOW, not a stale resold-database snapshot. Each row carries structured depth: parsed geography (location_parsed), canonical employment_type, mapped seniority, extracted requirements (skills / min-years / education) and a ghost_candidate flag for likely evergreen/unfilled listings. Company-domain auto-
Baseassetfactory-jobs-x402.sigrunner.workers.dev
from $0.002
7 endpoints
0
calls / 30d
A
assayAI & agents
Assay Live Endpoint Security & Schema Auditor: Audits live A2A, MCP, and x402 endpoints for schema conformance, latency, and payment integrity.
Baseassay.agentdiet.dev
from Free
2 endpoints
0
calls / 30d
A
assayAI & agents
Assay A2A & MCP Pre-Flight Security Audit & TDQS Certification ($0.005 Base USDC)
Baseassay-207908449630.us-central1.run.app
from Free
1 endpoint
0
calls / 30d
A
ascii-x402-production.up.railway.appImages, audio & video
Convert an uploaded image into terminal-friendly ASCII art.
Baseascii-x402-production.up.railway.app
from $0.001
1 endpoint
0
calls / 30d
A
arxiv.scrapemole.workers.devSearch & web
Use when you need to discover arXiv e-prints by keyword, title, author or field query: pass any arXiv search_query string (e.g. "transformer attention", "au:vaswani", "ti:\"attention is all you need\"", "cat:cs.LG AND all:diffusion"). Returns up to 25 papers with id, title, summary, authors (names + affiliation without emails), primary category, categories, published/updated, comment, journal ref,
Basearxiv.scrapemole.workers.dev
from $0.002
4 endpoints
0
calls / 30d
A
arxiv-digestCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basearxiv-digest.agentdiet.dev
from Free
5 endpoints
0
calls / 30d
A
arxiv-digestCrypto & DeFi
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.
Basearxiv-digest-72343955726.us-central1.run.app
from Free
5 endpoints
0
calls / 30d
A
ArgonautWorks Schedule FitAI & agents
Find a DST-aware meeting window inside shared local business hours for 2 to 8 IANA time zones.
Baseargonaut-schedule-fit.vercel.app
from $0.001
1 endpoint
0
calls / 30d
A
argonaut-crypto-headline-pulse.vercel.appCrypto & DeFi
Fresh crypto news and source-linked Bitcoin, Ethereum, Base, and market headlines from four independent publisher feeds, with deterministic topic filtering and no generated claims.
Baseargonaut-crypto-headline-pulse.vercel.app
from $0.007
1 endpoint
0
calls / 30d
A
ArgonautWorks Bounty SignalAI & agents
Canonical GitHub bounty viability check for agents: issue state, repo trust, payout evidence, age, claims and competing PRs. Prevents wasted coding on stale or fake rewards.
Baseargonaut-bounty-signal.vercel.app
from $0.01
1 endpoint
0
calls / 30d
A
ArgonautWorks Base Network PulseCrypto & DeFi
Current Base mainnet block consensus, EIP-1559 fees, ETH/USD reference price, and deepest WETH-stablecoin DEX pool telemetry.
Baseargonaut-base-network-pulse.vercel.app
from $0.009
1 endpoint
0
calls / 30d
A
app.ox212.comAI & agents
OX212 risk check: the engine's behavioural risk reading of the trades you send (no AI).
Baseapp.ox212.com
from $0.01
1 endpoint
0
calls / 30d
CriptoNousCrypto & DeFi
News/wire pulse for one symbol or meta ($0.04). Narrative context only NFA.
SolanaBaseBNB Chain+1app.criptonous.com
from $0.01
19 endpoints
0
calls / 30d
A
api.zuluworksai.comOther services
No description yet.
Baseapi.zuluworksai.com
from $0.001
5 endpoints
0
calls / 30d
A
api.x402cloud.spaceOther services
No description yet.
Solanaapi.x402cloud.space
from $0.0002
4 endpoints
0
calls / 30d

Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.