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

W
WalletForgeCrypto & DeFi
Fetch a public URL and return cleaned markdown
Baseapi.walletforge.app
from $0.001
4 endpoints
0
calls / 30d
V
VoipStoreAI & agents
Poll one order status; when the SMS has arrived the response carries sms_code and sms_text. Poll until status is received/completed/expired. Automated clients accept the Agent Access Addendum: https://voipstore.xyz/terms/agents
Baseapi.voipstore.xyz
from $0.001
2 endpoints
0
calls / 30d
A
api.vindexapi.devOther services
No description yet.
Baseapi.vindexapi.dev
from $0.01
1 endpoint
0
calls / 30d
A
api.vibe.airforceSocial & people
Search recent tweets by keyword (last 7 days). Returns tweets with author profiles and engagement metrics.
Baseapi.vibe.airforce
from $0.001
42 endpoints
0
calls / 30d
A
api.tweetx402.comSocial & people
No description yet.
Baseapi.tweetx402.com
from $0.0005
18 endpoints
0
calls / 30d
T
TollexCrypto & DeFi
First paid call: confirms your x402 integration end to end and returns live payment-rail and chain state with a signed receipt.
Baseapi.tollex.org
from $0.0079
1 endpoint
0
calls / 30d
tokenizen ownership receiptsCrypto & DeFi
Ownership verification with a signed receipt. The receipt is the product: the same answer is available for free at /api/verify-ownership.
Baseapi.tokenizen.nl
from $0.001
1 endpoint
0
calls / 30d
A
api.timzinin.comCrypto & DeFi
Score ERC-20/BEP-20 token rug-pull risk from honeypot.is simulation + DexScreener liquidity/age. Detects honeypots, high taxes, thin liquidity, brand-new pairs. Heuristic signal, not financial advice. No wallet, no RPC key, no browser.
Baseapi.timzinin.com
from $0.01
2 endpoints
0
calls / 30d
SyraCrypto & DeFi
Lists conferences, launches, listings, and macro events affecting crypto. Use when an agent schedules research around catalysts or filters noise by ticker. Input: optional ticker. Returns event[] with titles, dates, and metadata.
SolanaBasePolygon+6api.syraa.fun
from $0.0001
61 endpoints
0
calls / 30d
A
api.syntalic.comOther services
Analyst/market-level query - $0.02 per request
BaseSolanaapi.syntalic.com
from $0.01
23 endpoints
0
calls / 30d
A
api.solrouter.comOther services
No description yet.
Solanaapi.solrouter.com
from $0.005
3 endpoints
0
calls / 30d
A
api.slamai.devCrypto & DeFi
Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of the increase in active wallets over the activity window determines the token's trending rank.
Baseapi.slamai.dev
from $0.001
4 endpoints
0
calls / 30d
A
api.signalis.devAI & agents
Paid ($0.01 USDC via x402). Active AI-business narratives with lifecycle stage, driving sources, and momentum. Proxied from the Pulse service. Compute-first / settle-after — you are never charged when Pulse is unavailable or returns an error.
Baseapi.signalis.dev
from $0.01
2 endpoints
0
calls / 30d
A
api.salt19.comOther services
Query recent USGS earthquake events by lookback window and minimum magnitude and return compact live event state.
Baseapi.salt19.com
from $0.01
1 endpoint
0
calls / 30d
A
api.rocads.com.mxOther services
Design or analyze ideal first-order RC low-pass/high-pass filters; calculate cutoff, attenuation, phase, settling and PWM fundamental attenuation
Baseapi.rocads.com.mx
from $0.002
4 endpoints
0
calls / 30d
A
api.redqueen-serving.cloudAI & agents
DeepSeek V4 Flash: fast general chat, tools, reasoning and JSON output.
Baseapi.redqueen-serving.cloud
from $0.01
1 endpoint
0
calls / 30d
P
premiumrewards.vipCrypto & DeFi
One Sense. Definition from Wiktionary, CC BY-SA 4.0 and GFDL. https://creativecommons.org/licenses/by-sa/4.0/ https://www.gnu.org/licenses/fdl-1.3.html https://en.wiktionary.org/wiki/oracle The definition text (not this shop) may be reused under those licenses. Not endorsed by Wiktionary or the Wikimedia Foundation.
Baseapi.premiumrewards.vip
from $0.001
3 endpoints
0
calls / 30d
api.predge.ioSocial & people
PREMIUM smart-money consensus. "Smart money" is EDGE-based, not the opaque scorer: a wallet qualifies when its luck-damped realized edge over the last 30d is positive — edge_lower_bound = Wilson-95%-lower-bound(live win rate) − avg entry price > 0, from RESOLVED outcomes (same machinery as the wallets leaderboard), with skin-in-the-game floors (>= 10 trades, >= $1,000 volume). For every active Pol
BaseSolanaalgorand+2api.predge.io
from $0.005
21 endpoints
0
calls / 30d
A
api.polypulse-x402.workers.devCrypto & DeFi
Top Polymarket markets by 24h volume, with optional keyword filter. Snapshot of the most-traded open Polymarket markets in the last 24h (up to the top 300 scanned), optionally filtered by a case-insensitive keyword in the question/event title (e.g. 'bitcoin', 'election', 'fed') and by minimum liquidity. Returns odds, spread, volume, liquidity, price changes.
Baseapi.polypulse-x402.workers.dev
from $0.01
1 endpoint
0
calls / 30d
P
Permit ScouterSocial & people
Search new building permits in Tampa Bay, Southwest and Central Florida (GET /coverage lists the cities covered today) by area, trade (roofing, hvac, solar...), job value and date. Up to 25 results, refreshed daily.
Baseapi.permitscouter.com
from $0.01
4 endpoints
0
calls / 30d
A
api.paysponge.comDeveloper tools
Service: AgentMail API (https://api.paysponge.com/v0/inboxes/henry@grailcart.com/messages)
SolanaBaseapi.paysponge.com
from Free
23 endpoints
0
calls / 30d
M
Machine ShopCrypto & DeFi
Remove scripts, styles, templates and markup from static HTML; return visible text with line breaks. Limit: 50000 combined input string characters; batch maximum 100. JSON POST; invalid input returns 422, size limit 413. Unpaid production requests return x402 402 before input validation.
Baseapi.pay-forge.online
from $0.004
27 endpoints
0
calls / 30d
P
PaidPilot Invoice APIDeveloper tools
Generate an invoice PDF from JSON. $0.02 USDC on Base per call. Computes line items, tax, discount and totals server-side; 12 currencies; multi-page. Validate free first at POST /v1/invoice/validate. Don't use this for sending the invoice; it only returns the PDF.
Baseapi.paidpilot.io
from $0.01
6 endpoints
0
calls / 30d
A
api.orth.shOther services
No description yet.
Baseapi.orth.sh
from $0.01
3 endpoints
0
calls / 30d
A
api.orcatrace.devOther services
No description yet.
Baseapi.orcatrace.dev
from $0.01
3 endpoints
0
calls / 30d
A
api.nightshiftbuilds.comOther services
One Australian company register lookup by ABN, ACN or name.
Baseapi.nightshiftbuilds.com
from $0.01
1 endpoint
0
calls / 30d
A
api.netbrainis.co.zaCrypto & DeFi
Read the current on-chain compliance status for an Ethereum address from the ComplianceOracle contract (view call, no gas)
Baseapi.netbrainis.co.za
from $0.01
1 endpoint
0
calls / 30d
A
api.moltalyzer.xyzOther services
No description yet.
Baseapi.moltalyzer.xyz
from $0.005
6 endpoints
0
calls / 30d
MilypayCrypto & DeFi
BSB lookup 012-002
Solanaapi.milypay.xyz
from $0.002
1 endpoint
0
calls / 30d
M
MDataAccessSocial & people
Enrich a company using its name or website.
Baseapi.mdataaccess.com
from $0.002
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.