402cron MCP server
Paid cron for AI agents: we call your https URL on schedule, signed. No account, paid with x402.
Little public usage data yet
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If you have run it, two minutes of your experience saves the next person an afternoon.
402cron tools (16, 5 write)
write = sends, deletes, buys or postscreate_taskwrite actionFreeRegister a schedule against a destination you have already verified. Idempotent on "name": the same name updates the existing task instead of creating a second one. Creating costs nothing; each delivery ATTEMPT costs one credit.
delete_destinationwrite actionFreeRemove a claimed URL. Refused while a task still points at it — delete the task first.
delete_taskwrite actionFreeMove the task to the recycle bin. It stops firing immediately and can be restored for 30 days with restore_task; after that it is unrecoverable. Credits already spent are not refunded.
get_docsFreeOne section of the machine documentation: quickstart, headers, signature, notice, errors, billing or limits. Omit `section` to get the whole document.
get_pricingFreeWhat a delivery costs, which packs exist, and the exact x402 payment requirements for each. Balance is counted in DELIVERIES, not money, and packs never expire. Call this before buying.
get_service_statusFreeWhether the service is currently selling, on which network, and if not — why not. This is configuration, not liveness: the full health endpoint is at /health.
get_taskFreeA single task: schedule, destination, state, next run, and how many failures in a row it carries.
list_destinationsFreeThe URLs you have claimed and whether each is verified. The signing secrets are never shown again.
list_tasksFreeYour tasks and their state. Needs your management token as an Authorization header on this connection.
pause_taskFreeStop firing until you resume. Nothing is charged while a task is paused.
register_destinationFreeClaim an https:// URL you control. We answer with a challenge and a SIGNING SECRET that is shown ONCE and never again — store it before you do anything else; it is what lets you verify that a delivery really came from us. The permission covers that path and everything beneath it, nothing above. Verification is one request from us to the exact URL you registered: POST, headers X-402cron-Challenge: <value> and X-402cron-Event: verify, JSON body {"challenge":"<value>"}. Reply within 5 seconds, without a redirect, with a body that is the bare value or {"challenge":"<value>"}; we read the first 512 bytes and do not check the HTTP status (2xx is fine). Then call POST /api/destinations/{id}/verify within 15 minutes of registering. A fixed-response webhook cannot pass: you need an endpoint you can program. Registering a URL that is still pending issues a new challenge and a new signing secret every time — the old secret immediately stops verifying deliveries; a verified URL is left untouched unless you add ?rotate=1. The daily verification allowance (10 per destination, 40 per client, UTC day) does not reset on re-registration.
restore_taskFreeBring a task back from the recycle bin within 30 days. It comes back PAUSED — resume it explicitly.
resume_taskFreeStart firing again on the schedule. Refused if your balance is empty — buy deliveries first.
run_task_nowwrite actionFreeDeliver immediately, outside the schedule. THIS COSTS ONE CREDIT per attempt, exactly like a scheduled firing, and a timeout or unreachable host is retried up to three times — so one call can cost up to three credits. Use it to test a destination.
update_taskwrite actionFreeChange the schedule, destination, method, timeout, headers or body of an existing task. Omit a field to leave it unchanged — sending null is refused, because "unchanged" and "cleared" must not look the same. State is NOT editable here: use pause_task and resume_task.
verify_destinationFreeVerification is one request from us to the exact URL you registered: POST, headers X-402cron-Challenge: <value> and X-402cron-Event: verify, JSON body {"challenge":"<value>"}. Reply within 5 seconds, without a redirect, with a body that is the bare value or {"challenge":"<value>"}; we read the first 512 bytes and do not check the HTTP status (2xx is fine). Then call POST /api/destinations/{id}/verify within 15 minutes of registering. A fixed-response webhook cannot pass: you need an endpoint you can program. Registering a URL that is still pending issues a new challenge and a new signing secret every time — the old secret immediately stops verifying deliveries; a verified URL is left untouched unless you add ?rotate=1. The daily verification allowance (10 per destination, 40 per client, UTC day) does not reset on re-registration. Until this passes, no task may point at the destination.
Public scan report
scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it
- –Code scanremote-only server, no package to scann/a
- Live reliabilityremote reachable in 286ms20/20
- Tool poisoning16 tool descriptions checked15/15
- Auth qualityopen endpoint exposes 5 write-action tools with no auth3/15
- Maintenancerepository not readable: unknown3/15
- Maintainer identityverified namespace with website, no repo4/10
Findings (1)
- highWrite-action tools reachable without authentication
auth.open-write
Install directly
claude mcp add --transport http 402cron https://402cron.com/mcp
402cron: common questions
- Is 402cron MCP server safe?
- With care: it is graded C, so read the findings first (60/100). Read the 402cron safety report
- How do I install 402cron?
- It runs remotely at 402cron.com. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
- Does 402cron need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is 402cron maintained?
- The latest release is v1.0.0.
- Is 402cron up?
- 100% of our last 6 checks got an answer. We check remote servers about four times a day.