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

R
resolve402-kinze.vercel.appOther services
No description yet.
Baseresolve402-kinze.vercel.app
from $0.003
3 endpoints
0
calls / 30d
R
requirementsextract-mainnet-production.up.railway.appMarkets & finance
Extract structured supplier, compliance, financial, experience, document and evaluation requirements from a public tender or procurement webpage.
Baserequirementsextract-mainnet-production.up.railway.app
from $0.03
1 endpoint
0
calls / 30d
A
agentshopData & research
Patent applications filed by residents — a direct measure of domestic inventive output. Coverage is limited to the most recent available years. Source: World Bank Open Data (CC BY 4.0).
Basereportbazaar.app.workbuddy.host
from $0.07
1 endpoint
0
calls / 30d
D
DevX Repo Run CheckCrypto & DeFi
Before an AI coding agent (or you) runs a GitHub repo's install steps: scans README, package.json install scripts, install.sh/setup.py, .vscode/tasks.json and Makefile for download-and-execute one-liners (iwr|iex, curl|sh), obfuscated or base64 payloads, known malware domains, typosquatted crypto dependencies, agent-targeted prompt injection and password-protected archives, plus GitHub signals of
Baserepo-run-check.nextill-pos.workers.dev
from $0.005
1 endpoint
0
calls / 30d
R
rentcast.x402.paysponge.comOther services
Service: RentCast (https://rentcast.x402.paysponge.com/properties/test)
SolanaBaserentcast.x402.paysponge.com
from $0.01
8 endpoints
0
calls / 30d
D
DNS lookupCrypto & DeFi
prompt-injection risk scan: detects instruction override, tool abuse and secret exfiltration phrases before an agent consumes untrusted text.
Baserelay402.georgespring.workers.dev
from $0.001
30 endpoints
0
calls / 30d
TSN RelayOther services
POST /channel creates a live room with an optional lifetime (default 5 minutes).
Baserelay.thesoulnetwork.eu
from $0.01
6 endpoints
0
calls / 30d
R
registry.frames.agCrypto & DeFi
Get token prices in any fiat/crypto currency
Baseregistry.frames.ag
from $0.002
1 endpoint
0
calls / 30d
RedRobotRouges IAAI & agents
OpenAI-compatible chat completions (local GPU, Quebec/CA)
Baseredrobotrouges.ca
from $0.001
1 endpoint
0
calls / 30d
Recompete RadarData & research
Find a recipient's federal contract awards whose recorded period of performance ends within a given window.
Baserecompete.melchiorlabs.com
from $0.03
1 endpoint
0
calls / 30d
V
verified-receiptCrypto & DeFi
Verified receipt for a crypto invoice: on-chain payment proof + permanent link.
Basereceipt.node01.org
from $0.10
1 endpoint
0
calls / 30d
R
receipt-lens-8af7.beatrise-jansevska.chatgpt.siteOther services
Base native-USDC receipt evidence: recipient/amount verdict, transfers, confirmations, separate fees, provenance and limitations. Integer quantities are exact decimal strings.
Basereceipt-lens-8af7.beatrise-jansevska.chatgpt.site
from $0.05
1 endpoint
0
calls / 30d
R
recallguard-api.vercel.appOther services
RecallGuard inventory matcher: match up to 100 items against US recalls, $0.10 per call
Baserecallguard-api.vercel.app
from $0.10
1 endpoint
0
calls / 30d
D
Decision ReadinessCrypto & DeFi
capability_id=decision_readiness.event_confirmation.v1; determines whether authoritative evidence is sufficient to confirm a supported event before an autonomous agent continues. Current scope: Compound Governor proposal execution confirmation. Payment alternatives: Base mainnet or Solana mainnet native USDC; select one for one assessment. testnet_only=false; mainnet_supported=true.
Basereality-assurance.up.railway.app
from $0.11
1 endpoint
0
calls / 30d
RealEstatePulseOther services
US real estate and mortgage — 30yr/15yr fixed rates, ARM, housing starts, permits, Case-Shiller HPI
Baserealestate.lonestaroracle.xyz
from $0.03
1 endpoint
0
calls / 30d
R
reader.scrapemole.workers.devImages, audio & video
Use when you need to read one public web page: fetches the URL live and returns its main readable content as clean Markdown (or plain text), with navigation, ads, cookie banners and boilerplate removed, plus title, byline, publish date, language and word count. Respects robots.txt. Server-rendered HTML only (no JavaScript execution).
Basereader.scrapemole.workers.dev
from $0.001
5 endpoints
0
calls / 30d
ReadEdgeSearch & web
Clean web content extraction — any URL to markdown + text + metadata
Baseread.lonestaroracle.xyz
from $0.005
1 endpoint
0
calls / 30d
RattlerAICrypto & DeFi
Autonomous smart contract security auditor — 20+ vulnerability classes, PoC exploits
Baserattler.lonestaroracle.xyz
from $2.00
1 endpoint
0
calls / 30d
RatesPulseMarkets & finance
US bond-market signal: yield curve, credit spreads, real yields (no params)
Baserates.lonestaroracle.xyz
from $0.05
1 endpoint
0
calls / 30d
R
ragradar.spaceOther services
No description yet.
Baseragradar.space
from $0.001
35 endpoints
0
calls / 30d
R
raging-engines-swarm.floot.appOther services
Base transaction preflight for agents: recent fee percentiles, congestion, block timing and base-fee ETH cost for a requested gas limit.
Baseraging-engines-swarm.floot.app
from $0.002
1 endpoint
0
calls / 30d
R
ragdar.vercel.appOther services
No description yet.
Baseragdar.vercel.app
from $0.001
7 endpoints
0
calls / 30d
R
rag-dietCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat (https://rag-diet.agentdiet.dev/v1/distill)
Baserag-diet.agentdiet.dev
from Free
1 endpoint
0
calls / 30d
Q
quotes.scrapemole.workers.devMarkets & finance
Use when an agent needs the latest market price of a listed instrument: AAPL, MSFT, NVDA, SPY, ^GSPC (S&P 500), ^IXIC, EURUSD=X, GC=F (gold futures), BTC-USD, 7203.T (Tokyo), VOW3.DE (Xetra). Returns price, previous close, absolute and percent change, day high/low, volume, 52-week high/low, exchange, currency, instrument type, market time and a Yahoo Finance link. Use /v1/search first if you only
Basequotes.scrapemole.workers.dev
from $0.001
6 endpoints
0
calls / 30d
Q
quicknode.comOther services
No description yet.
Basequicknode.com
from $0.01
2 endpoints
0
calls / 30d
QtyCrypto & DeFi
Canonical audit JSON plus sha256 of a previous Qty result. Includes input, definition ids, formulas, and a timestamp. The hash ignores the timestamp so the same payload always hashes the same. No chain write. Exact USDC $0.001 on eip155:8453 and solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp.
BaseSolanaqty.vercel.app
from $0.001
1 endpoint
0
calls / 30d
QRCode.Pub tools for agentsSearch & web
Fetch a public web page and return its title, description, clean Markdown (scripts, styles, nav chrome removed) and the list of links. No model call, deterministic.
Baseqrcode.pub
from $0.01
1 endpoint
0
calls / 30d
Q
qr-code-generator.underscoredone.comOther services
No description yet.
Baseqr-code-generator.underscoredone.com
from $0.01
1 endpoint
0
calls / 30d
Quietforge Docs APIImages, audio & video
Extract text per page from a PDF (plus metadata) as JSON. Digital PDFs only, no OCR.
Baseqf-api.quietforge-studio.workers.dev
from $0.002
6 endpoints
0
calls / 30d
T
TaskForge Agent AssuranceAI & agents
Deterministically compare caller-supplied content with a caller-supplied SHA-256 digest. Integrity comparison only; no identity, provenance, or security guarantee.
Baseqaegxjxaavxdqihfgzhr.supabase.co
from $0.01
3 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.