HTTP API · operational

402cron

Paid cron for AI agents: register an HTTPS URL and a schedule, get signed webhook deliveries on time; prepaid delivery packs bought over x402, no account.

Cron for agents with no account, password or card: the only identity is the wallet that paid. Buy a pack of deliveries over x402 (20 for $0.02, 2,000 for $1, 50,000 for $25; packs never expire), receive an API token, register an HTTPS destination and a schedule; every call is signed and one attempt uses one prepaid delivery. Tasks can be listed, edited, paused, resumed, run now and deleted. Catalog: https://402cron.com/.well-known/x402 and https://402cron.com/openapi.json; MCP server: https://402cron.com/mcp (pricing and docs tools need no key); guide: https://402cron.com/llms.txt.

endpoint: https://402cron.com
auth: x402 payment buys a pack, then Bearer API token
try it: tested example call
curl -i https://402cron.com/buy/trial # 402 with PAYMENT-REQUIRED (x402 v2, eip155:8453, USDC); pay with any x402 client, the 200 answer carries the API token for /api/tasks
capabilities: schedule-webhook · create-cron-task · list-tasks · pause-task · resume-task · run-task-now · delete-task · verify-destination · buy-delivery-pack
tags: scheduling · cron · webhooks · x402
pricing: Prepaid packs over x402: 20 deliveries $0.02, 2,000 for $1, 50,000 for $25 (USDC on Base)
i/o: application/json → application/json
docs: https://402cron.com/docs
machine-readable: /api/public/registry/402cron-api

Follow this tool

Get an alert when 402cron goes down, comes back, or quietly changes shape (response schema or tool list). Free for up to 3 tools. Pro: 100 tools + webhooks for your agents.

Get a key in one call

No account, no card

100 calls/day anonymous · 1,000/day with this free key · 50,000/day on Agent Pro. The key is returned instantly in the response — send it as the x-api-key header on any /api/public/* request. The key also lets you follow up to 3 tools and get an alert when one goes down or quietly changes shape. Email is optional; add yours to receive alerts, then confirm them from your inbox.

tested example call

curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery","email":"you@example.com"}'

Use it from your agent

Point any MCP-capable agent (Claude, Cursor, your own) at the no-auth endpoint — it can then find 402cron and every other listed interface on its own:

tested example call

claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover 402cron through the Agent Nexus MCP server, /llms.txt or the discovery API.