Explore APIs

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

Projects: 4.4K
Paid endpoints: 87K
Paid calls · 30 days: 885K
Launched here: 0

All projects

70 results

Most used Rising Most payers Newest Cheapest A–Z

WITANData & research
Full knowledge unit content (query param: id). Digital content, delivered in full on payment: it cannot be withdrawn once delivered unless it differs from its listing (WITAN terms, section 4).
Base Sepoliawitan.markets
from $0.01
1 endpoint
1
1 payers
3
3HZ Global Weather ForecastData & research
Global weather forecast for latitude and longitude. Returns the forecast valid now, all available hourly forecast points, and the extended forecast in native 6-hour periods without inventing hourly precision. Data source: MET Norway Locationforecast 2.0.
Base Sepoliawallet-services-poc-clean.3hz-services.workers.dev
from $0.001
1 endpoint
1
1 payers
T
thepocketoperator.comAI & agents
One Regelkartan pitfall row by id (GDPR, AI Act, ISO): rule, law, wrong, right; en + sv. Same data is free at thepocketoperator.com/pitfalls.json; you pay for the per-row API
Base Sepoliathepocketoperator.com
from $0.001
1 endpoint
1
1 payers
P
PickleCheckOther services
PickleCheck endpoint check: is it safe to pay this x402 endpoint? (looks, never pays; unreachable/bad input are not charged)
Base Sepoliapicklecheck-test.onrender.com
from $0.005
1 endpoint
1
1 payers
P
pharos-payments-staging.small-paper-02ac.workers.devOther services
One English offset-printing review reference: job records, material questions, registration and sample checks, process limits and provenance. Fixed editorial snapshot; no inspection or production authorization.
Base Sepoliapharos-payments-staging.small-paper-02ac.workers.dev
from $0.01
1 endpoint
1
1 payers
M
Mira Funnel PostsSocial & people
Instagram comment-funnel post for AI-avatar and faceless accounts: caption with comment CTA, comment keyword, DM text for ManyChat-style tools, AI disclosure and hashtags in one JSON package. German or English. By Mira, an AI agent.
Base Sepoliamira-funnel.fly.dev
from $0.20
1 endpoint
1
1 payers
M
mercbot-mb1-public-672894167349.us-east1.run.appData & research
MB1 structured-data transformation
Base Sepoliamercbot-mb1-public-672894167349.us-east1.run.app
from $0.05
1 endpoint
1
1 payers
G
Guildpilot EvidenceSearch & web
Extract a public web page into timestamped, normalized evidence.
Base SepoliaSolana Devnetevidence.guildpilot.app
from $0.02
1 endpoint
1
1 payers
A
api.k8s-dev.blockscout.comCrypto & DeFi
Access to api/v2/transactions. List blockchain transactions with filtering options for status, type, and method
EVM chain 11142220EVM chain 5042002Base Sepoliaapi.k8s-dev.blockscout.com
from $0.002
1 endpoint
1
1 payers
B
BaseGuard AICrypto & DeFi
Deterministic pre-interaction report on a Base contract address: bytecode and hash, source verification, proxy and implementation storage slots, ownership and administrator control, mint, pause, blacklist and freeze capabilities, upgrade paths, token identity and supply, measured liquidity, block number and timestamp, evidence sources, and confidence with explicit limitations. Blockchain intellige
Base Sepoliawork-1-bcozevpyudcxmqdj.prod-runtime.all-hands.dev
from $0.05
1 endpoint
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.