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

AI & agents

524 results

Most used Rising Most payers Newest Cheapest A–Z

A
agent-prep.annushka1190.workers.devAI & agents
Compare two JSON values and return added, removed, and changed paths with before/after values.
Baseagent-prep.annushka1190.workers.dev
from $0.005
1 endpoint
0
calls / 30d
A
agent-guard.annushka1190.workers.devAI & agents
Mask emails, phone numbers, card numbers, SSNs, and EVM private-key-like hex strings in free text.
Baseagent-guard.annushka1190.workers.dev
from $0.001
7 endpoints
0
calls / 30d
A
agent-format.annushka1190.workers.devAI & agents
Encode UTF-8 text to base64 or decode base64 to text. Body: { op: "encode"|"decode", text: "..." }.
Baseagent-format.annushka1190.workers.dev
from $0.002
1 endpoint
0
calls / 30d
A
agent-forge.annushka1190.workers.devAI & agents
SHA-256 hex digest of UTF-8 text. Body: { text: "..." }.
Baseagent-forge.annushka1190.workers.dev
from $0.002
1 endpoint
0
calls / 30d
A
agent-exec.448c.orgAI & agents
POST /execute -- Execute python3/node code in an isolated, network-less sandbox; returns stdout, stderr, exit code as JSON. No account needed -- pay per request over x402. Tier: default ($0.0010).
Baseagent-exec.448c.org
from $0.001
1 endpoint
0
calls / 30d
A
Agent Evidence API & US WeatherAI & agents
Verify a claim or fact check a statement against public web sources: send a question and up to 5 URLs, get cited evidence - passages that support, contradict or fail to settle it. Claim verification with a citation for every excerpt: source URL, retrieval time, content hash. Never charges when nothing is retrieved. Free to evaluate: the `sample` tool returns one real response at no cost, so you ca
Baseagent-evidence.thx93.dev
from $0.01
3 endpoints
0
calls / 30d
A
agent-diplomacy-production.up.railway.appAI & agents
Entry to Diplomacy table 'Lobby Table 6' (7 seats, winner takes pot)
Baseagent-diplomacy-production.up.railway.app
from $0.01
2 endpoints
0
calls / 30d
A
agent-consensus.annushka1190.workers.devAI & agents
Majority winner from a list of votes. Body: { votes: ["yes","yes","no"] }. Optional minShare 0–1.
Baseagent-consensus.annushka1190.workers.dev
from $0.003
1 endpoint
0
calls / 30d
A
agent-clock.annushka1190.workers.devAI & agents
Given a standard 5-field cron expression, return the next N fire times in UTC.
Baseagent-clock.annushka1190.workers.dev
from $0.005
1 endpoint
0
calls / 30d
A
agent-card-validator-mcp.mtree.workers.devAI & agents
No description yet.
Baseagent-card-validator-mcp.mtree.workers.dev
from $0.03
1 endpoint
0
calls / 30d
A
agent-bounty-feed.dailydollar.workers.devAI & agents
Filtered agent bounty feed (verified open, claimable, paid AI-agent bounties from public boards + Algora, refreshed hourly). Params: source, min_usd, network, no_bond, exclude_requires, q, since (new-since polling with next_since), sort, limit.
Baseagent-bounty-feed.dailydollar.workers.dev
from $0.01
1 endpoint
0
calls / 30d
A
agent-auditAI & agents
x402 seller + agent-readiness audit of one origin: live 402 challenge per paid route (up to 5), price vs catalog, HEAD/garbage-header safety, llms.txt, /.well-known/x402, openapi.json, dead doc links. Read-only.
Baseagent-audit.agent-audit.workers.dev
from $0.003
3 endpoints
0
calls / 30d
4
402who.vercel.appAI & agents
This call for a Agent. Agent 'Who?'
Base402who.vercel.app
from $0.50
1 endpoint
0
calls / 30d
1
1rpc.aiAI & agents
No description yet.
Base1rpc.ai
from $0.01
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.