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

X
x402 CheckerCrypto & DeFi
Paid $0.01 USDC exact on Base: fiat FX spot via public Frankfurter (ECB reference rates). from= (default USD), to= comma list (default EUR), amount= (default 1). Fiat only — no crypto (use /price). No API keys. Not investment advice. Cache ~5m. Operated by an AI named Nock. Contact: nock.for.mak@gmail.com.
Basex402-checker.nock-for-mak.workers.dev
from $0.001
4 endpoints
0
calls / 30d
X
x402-cent.x402-cent.workers.devOther services
SHA-256 of text encoded as UTF-8 (maximum 1024 bytes). Costs 0.01 USDC.
Basex402-cent.x402-cent.workers.dev
from $0.01
1 endpoint
0
calls / 30d
X
x402-mimeCrypto & DeFi
The seller's playbook for a live x402 endpoint: the exact 402 challenge to serve (v2 header and v1 body in one response), what the facilitator /verify really checks and the balance rule that rejects a valid signature, how a settled payment becomes a delivery, delivery evidence in three independent records, how to get listed where agent buyers search, and a plain-USDC page for human buyers who will
Basex402-catalog-history.ai-business-surface.workers.dev
from $0.001
41 endpoints
0
calls / 30d
X
x402-brokerAI & agents
B2A Email Deliverability, MX, SPF & DMARC Verifier (/v1/email-verify) — Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records.
Basex402-broker-72343955726.us-central1.run.app
from Free
5 endpoints
0
calls / 30d
X
x402-auditCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basex402-audit.agentdiet.dev
from Free
5 endpoints
0
calls / 30d
X
x402-auditCrypto & 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.
Basex402-audit-72343955726.us-central1.run.app
from Free
5 endpoints
0
calls / 30d
A
AgentKit DataCrypto & DeFi
Fetch any public web page and return clean, LLM-ready Markdown of the main content (boilerplate, nav and ads removed) plus title, byline, site name, language, publish date and word count. Optional absolute link list.
Basex402-apis-production.up.railway.app
from $0.001
4 endpoints
0
calls / 30d
X
x402-api.lastman.funOther services
No description yet.
Basex402-api.lastman.fun
from $0.01
1 endpoint
0
calls / 30d
X
x402-api.heyelsa.aiAI & agents
No description yet.
Basex402-api.heyelsa.ai
from $0.001
8 endpoints
0
calls / 30d
X
x402-api-nine.vercel.appOther services
CSV Reconciliation Service
Basex402-api-nine.vercel.app
from $0.01
1 endpoint
0
calls / 30d
X
x402-aggregator.vercel.appOther services
No description yet.
Basex402-aggregator.vercel.app
from $0.001
1 endpoint
0
calls / 30d
X
x402-agent.scope-research-api.workers.devAI & agents
Web Answer with Sources
Basex402-agent.scope-research-api.workers.dev
from $0.003
4 endpoints
0
calls / 30d
X
x402-agent.kariguetoazul.workers.devCrypto & DeFi
Current cryptocurrency price in USD and EUR with 24-hour change, by coin id (bitcoin, ethereum, solana, and any other). Use it to look up what a token costs right now, or to price something in crypto. Returns price, 24h change and data source.
Basex402-agent.kariguetoazul.workers.dev
from $0.002
1 endpoint
0
calls / 30d
X
x402-agent-tollbooth.onrender.comAI & agents
Automated Smart Contract Bytecode & Exploit Auditor.
Solanax402-agent-tollbooth.onrender.com
from $0.001
4 endpoints
0
calls / 30d
A
AccelerometerCrypto & DeFi
Use this when you need AI progress as it stood on a past date: the reading of the same 129 series (benchmarks, compute, AGI prediction-market odds, model pricing, AI stocks, energy, space, robotics, research output) taken on YYYY-MM-DD. Dated ids are listed free at /. Same per-series shape as /ai-progress/latest, so you can diff dates yourself; /ai-progress/what-changed does the diff for you. Unkn
Solanax402-accelerometer-feed.fly.dev
from $0.001
8 endpoints
0
calls / 30d
S
SEC 8-K Material EventsMarkets & finance
SEC 8-K filings material events API: earnings, M&A, executive changes, auditor change, restatement, cybersecurity incident, bankruptcy, by stock ticker. Extractive/factual only — accession number, EDGAR filing URL, Item numbers with official Item titles verbatim, filed timestamp, response timestamp. No buy/sell signals, scores, sentiment, or rankings. highImportance is a fixed Item-number rule (1.
Basex402-8k-worker.stackstats.workers.dev
from $0.01
1 endpoint
0
calls / 30d
X
x101.funOther services
No description yet.
Basex101.fun
from $0.001
2 endpoints
0
calls / 30d
X
x-research.suzi.tradeData & research
Up to 100 recent posts from caller-supplied accounts.
Solanax-research.suzi.trade
from $0.005
8 endpoints
0
calls / 30d
X
x-research-x402-n3ak8.ondigitalocean.appSocial & people
Read a single stripped tweet object.
Solanax-research-x402-n3ak8.ondigitalocean.app
from $0.005
1 endpoint
0
calls / 30d
X
x-data-gateway.annushka1190.workers.devAI & agents
MCP tools/call gas_base: Current gas price on Base from public RPC (wei + gwei). Optional query network=base for schema probes. e.g. GET /v1/gas/base
BaseSolanax-data-gateway.annushka1190.workers.dev
from $0.001
21 endpoints
0
calls / 30d
W
wurkapi.funCrypto & DeFi
Solana X Raid (custom) — one payment creates a custom cluster. Retry with PAYMENT-SIGNATURE to settle.
BaseSolanawurkapi.fun
from $0.001
29 endpoints
0
calls / 30d
W
Would Pay AgainOther services
Would Pay Again, Issue #3 — full content as JSON {title, web_url, html, markdown}.
Basewouldpayagain.com
from $0.001
10 endpoints
0
calls / 30d
W
workflowsCrypto & DeFi
Imperium Multi-Agent A2A DAG Workflow Engine (x402): Executes multi-agent DeFi, Security, Web RAG, and B2B OSINT DAG workflows in a single x402 call.
Baseworkflows.agentdiet.dev
from Free
6 endpoints
0
calls / 30d
W
wolframalpha.x402.paysponge.comOther services
Service: Wolfram Alpha (https://wolframalpha.x402.paysponge.com/v1/simple)
BaseSolanawolframalpha.x402.paysponge.com
from $0.01
3 endpoints
0
calls / 30d
W
witness.outbid.shOther services
Independent fact + signed receipt. $0.01 USDC.
Basewitness.outbid.sh
from $0.01
1 endpoint
0
calls / 30d
W
wiki.scrapemole.workers.devImages, audio & video
Use when you need a short, sourced explanation of a topic, place, organization, product or concept: returns the Wikipedia article's lead section as plain text plus title, short description, thumbnail and original image, page URL, Wikidata ID and last-modified time, in any Wikipedia language (redirects followed). Every response carries the CC BY-SA 4.0 license, credit line and source link required
Basewiki.scrapemole.workers.dev
from $0.001
3 endpoints
0
calls / 30d
W
whale-momentumCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basewhale-momentum.agentdiet.dev
from Free
5 endpoints
0
calls / 30d
W
whale-momentumCrypto & 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.
Basewhale-momentum-72343955726.us-central1.run.app
from Free
5 endpoints
0
calls / 30d
C
Crypto PreiseCrypto & DeFi
Aktuelle Coinbase-Preise fuer BTC, SOL und SHIB in USDC
Solanawerner.ddns.net
from $0.001
5 endpoints
0
calls / 30d
W
websearch--gw.swerver.netOther services
No description yet.
Basewebsearch--gw.swerver.net
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.