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

4,273 results

Most used Rising Most payers Newest Cheapest A–Z

C
clawpay.aiAI & agents
Translation Skill for Agent Improvement
Baseclawpay.ai
from $0.01
10 endpoints
0
calls / 30d
C
Claw HunterCrypto & DeFi
Write an X thread from a brief — hook, one idea per post, closing payoff. Optionally grounded in a crypto bounty's criteria and project research via bountyId (Pump Fun GO and other venues).
BaseSolanaclawhunter.fun
from $0.001
12 endpoints
0
calls / 30d
C
claudeyes.notoriousd3v.workers.devImages, audio & video
Render a web page and return its content as markdown
Baseclaudeyes.notoriousd3v.workers.dev
from $0.01
1 endpoint
0
calls / 30d
C
claudeye.notoriousd3v.workers.devImages, audio & video
Render a web page and return its content as markdown
Baseclaudeye.notoriousd3v.workers.dev
from $0.01
1 endpoint
0
calls / 30d
C
classificado.app.brAI & agents
Meta Agent Tools: registro de agente
Baseclassificado.app.br
from $0.10
3 endpoints
0
calls / 30d
C
clanker-banker.agentfetcher.workers.devOther services
No description yet.
Baseclanker-banker.agentfetcher.workers.dev
from $0.0067
1 endpoint
0
calls / 30d
C
claimgate.onrender.comOther services
ClaimGate fact check: verbatim-quote evidence, coherence-gated verdict, sealed receipt. $0.25 USDC on Base.
Baseclaimgate.onrender.com
from $0.25
1 endpoint
0
calls / 30d
C
city-campaign-production.up.railway.appOther services
City Campaign raffle spin
Basecity-campaign-production.up.railway.app
from $0.10
1 endpoint
0
calls / 30d
C
circadian-agent.comSearch & web
Extract a web page to clean Markdown plus metadata (title, description, links, word count)
Basecircadian-agent.com
from $0.005
2 endpoints
0
calls / 30d
C
Cian Endpoint AuditCrypto & DeFi
HTTP endpoint health audit for one URL: status and redirect chain, latency p50/p95 over repeated samples, TLS certificate expiry and issuer, the response headers that matter, and a list of detected anomalies (missing HSTS/CSP/X-Content-Type-Options, expiring cert, weak TLS, CORS wildcard, insecure cookies, version disclosure, slow p95, redirect loops). Private, loopback and link-local targets are
Basecian-x402.netlify.app
from $0.01
2 endpoints
0
calls / 30d
C
chipscan.steveyuowoo.workers.devOther services
chipscan full chip-structure lifecycle analysis
Basechipscan.steveyuowoo.workers.dev
from $0.05
1 endpoint
0
calls / 30d
C
China Market Data APIMarkets & finance
China FX signal: the onshore USDCNY rate alongside the offshore USDCNH rate, plus the CNH minus CNY spread in pips and basis points. Use this endpoint when an agent needs China FX positioning, RMB depreciation or appreciation pressure, capital-flow stress, or an offshore-versus-onshore arbitrage signal. The onshore/offshore spread is the standard proxy for offshore RMB sentiment and is closely wat
Basechina-market-data-api.vercel.app
from $0.005
1 endpoint
0
calls / 30d
C
chiefofstaff token safetyCrypto & DeFi
Solana token safety / rug-pull check for SPL tokens (pump.fun, Raydium, Meteora, Jupiter): one-sentence verdict, blocking/warnings/unknowns, mint & freeze authority, RugCheck score & risks, LP locked %, holder count & top-10 concentration, liquidity & price, 1h volume & buy/sell flow, age -> casino|speculative|legit.
BaseSolanachiefofstaff-solana.iodized-lemon.workers.dev
from $0.002
5 endpoints
0
calls / 30d
C
Changelog State APIOther services
Detected changelog update history for one tracked vendor.
SolanaBasechangelog-state-api.replit.app
from $0.01
84 endpoints
0
calls / 30d
C
changecheck-mainnet-production.up.railway.appData & research
Detect meaningful changes on a public webpage compared with a previous snapshot. Useful for prices, deadlines, availability, tenders, policies and status monitoring.
Basechangecheck-mainnet-production.up.railway.app
from $0.02
1 endpoint
0
calls / 30d
ChainReadCrypto & DeFi
Current gas price and fee suggestion on Base or Ethereum: base fee, priority fee (low/standard/fast), max fee to set, and what an ETH transfer, ERC-20 transfer and DEX swap cost right now in gwei, ETH and USD (Chainlink ETH/USD). Know what a transaction costs before you send it.
Basechainread.imac2014ville.workers.dev
from $0.001
1 endpoint
0
calls / 30d
C
chainray.onlineCrypto & DeFi
ChainRay /token-risk
Basechainray.online
from $0.001
80 endpoints
0
calls / 30d
C
chainfeed.leeworks.devCrypto & DeFi
No description yet.
Basechainfeed.leeworks.dev
from $0.02
1 endpoint
0
calls / 30d
C
chain-blockCrypto & DeFi
Ethereum: Wallet portfolio: native balance plus every ERC-20 holding with USD price and value, total net worth, NFT collection count. $0.03 per call.
Basechain.intel.rallylive.ca
from $0.01
23 endpoints
0
calls / 30d
C
cc-x402-check.cc-agentdesk.workers.devCrypto & DeFi
Lint an x402 endpoint: probes the URL once unpaid and returns a JSON report with a fix for every finding: payment-requirement fields, network, amount units, asset, payTo, EIP-712 domain read on-chain vs `extra`, Bazaar metadata, v1/v2 consistency and CORS for browser buyers. Free demo: GET /v1/check?url=
Basecc-x402-check.cc-agentdesk.workers.dev
from $0.01
1 endpoint
0
calls / 30d
C
cc-research-desk Printable PDFAI & agents
Markdown to a clean, print-ready PDF (US Letter or A4): one-pagers, checklists with tick boxes, cheat sheets, planner pages. Deterministic, no AI rewriting, up to 4 pages / 12k chars. Returns application/pdf.
Basecc-printable-pdf.cc-agentdesk.workers.dev
from $0.01
1 endpoint
0
calls / 30d
Open Data ProxyDeveloper tools
Use GET /iban?value=… to check checksum validity and retrieve bank name, country and BIC.
Basecbs.thesoulnetwork.eu
from $0.01
6 endpoints
0
calls / 30d
C
catsanex.up.railway.appOther services
No description yet.
Basecatsanex.up.railway.app
from $5.00
1 endpoint
0
calls / 30d
CarryLensCrypto & DeFi
Cost-aware crypto perpetual risk report for trading agents: projected net carry, break-even time, market regime, breadth, funding crowding, basis outliers, open interest, 24h persistence, and transparent risk flags.
Basecarry-lens-api.netlify.app
from $0.003
3 endpoints
0
calls / 30d
C
carinjuryattorney.bizSocial & people
Publish a compliant English (en-US) or Spanish (es-US) California Auto Accident, Personal Injury, or Prop 213 (Civ. Code 3333.4) article on CarInjuryAttorney.biz with LegalService JSON-LD & Ed25519 receipt ($1.00 USDC).
Basecarinjuryattorney.biz
from $1.00
1 endpoint
0
calls / 30d
C
capminal.aiAI & agents
No description yet.
Basecapminal.ai
from $0.001
2 endpoints
0
calls / 30d
C
capi2-foundry.vandurmedries.workers.devOther services
Audit a supplied OpenAPI contract and return prioritized integration fixes.
Basecapi2-foundry.vandurmedries.workers.dev
from $0.01
1 endpoint
0
calls / 30d
C
capi2-agent-commerce.vandurmedries.workers.devAI & agents
Probe one public endpoint and diagnose whether agents can discover and parse its unpaid x402 challenge.
Basecapi2-agent-commerce.vandurmedries.workers.dev
from $0.008
1 endpoint
0
calls / 30d
canonicalhashAI & agents
Batch canonicalize up to 1000 JSON payloads in one call — one signature, one payment, one attestation. Same RFC 8785 canonicalization as /v1/canonicalize. Use when an agent needs to fingerprint a dataset, dedup a batch of records, or hash many inputs in a single round-trip. $0.01 flat per call (about $0.00001 per item). Free verification at POST /v1/verify.
Basecanonicalhash-production.up.railway.app
from $0.001
4 endpoints
0
calls / 30d
C
cannastack.0x402.shOther services
No description yet.
Basecannastack.0x402.sh
from $0.02
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.