MCP-Server
402cron
com.402cron/402cron
Was dieses MCP kann
Schedules signed HTTP webhook deliveries, with destination verification, task creation, execution, pausing, resuming, editing, and delivery management.
Funktionen
Tools
16
Tools
create_task
Create or update a scheduled task
Register 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.
Eingabeschema
{'type': 'object', 'required': ['name', 'cron', 'url'], 'properties': {'url': {'type': 'string', 'description': 'The https:// destination. It must already be registered and verified — see register_destination.'}, 'body': {'description': 'The body we send. Stored in the clear, so it must not carry credentials. A non-string is serialized as JSON.'}, 'cron': {'type': 'string', 'description': '5 fields, UTC only, one minute at the finest. Operators: * a-b a,b */n a-b/n. Names: SUN-SAT (day), JAN-DEC (month). Macros: @yearly @annually @monthly @weekly @daily @midnight @hourly. Day-of-week is 0-6 with 0 = Sunday; 7 also means Sunday. Write days as names (MON-FRI). Numbers differ between schedulers: Quartz, AWS EventBridge and Cloudflare number Sunday as 1, we and croniter as 0. Translated for you: "?". "?" as a whole day-of-month or day-of-week field becomes "*". A NUMERIC day-of-week next to "?" is refused, because "?" means the expression was written where Sunday is 1. Refused: Quartz L, Quartz W, Quartz #, six fields (seconds), seven fields (year), @reboot, @every, CRON_TZ= prefixes, time zones of any kind — each with a code saying what to send instead.'}, 'name': {'type': 'string', 'description': 'Your name for the task. Unique among your live tasks; creating with an existing name updates it.'}, 'method': {'type': 'string', 'description': 'HTTP method of the delivery. Default POST. GET and HEAD carry no body.'}, 'headers': {'type': 'object', 'description': 'Headers we send with the delivery. Stored ENCRYPTED at rest — put credentials here, never in the body.'}, 'timeoutMs': {'type': 'integer', 'description': 'How long we wait for your server, 250-2000 ms. Answer 202 and do the work behind it.'}}, 'additionalProperties': False}
delete_destination
Delete a destination
Remove a claimed URL. Refused while a task still points at it — delete the task first.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'integer', 'description': 'Destination id, as returned by register_destination.'}}, 'additionalProperties': False}
delete_task
Delete a task
Move 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.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Task id (UUID), as returned by create_task or list_tasks.'}}, 'additionalProperties': False}
get_docs
Machine documentation
One section of the machine documentation: quickstart, headers, signature, notice, errors, billing or limits. Omit `section` to get the whole document.
Eingabeschema
{'type': 'object', 'properties': {'section': {'enum': ['quickstart', 'verification', 'headers', 'signature', 'notice', 'errors', 'billing', 'limits'], 'type': 'string', 'description': 'Which section to return. Omit for all of it.'}}, 'additionalProperties': False}
get_pricing
Pricing and payment requirements
What 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.
Eingabeschema
{'type': 'object', 'properties': {}, 'additionalProperties': False}
get_service_status
Is the service selling right now
Whether 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.
Eingabeschema
{'type': 'object', 'properties': {}, 'additionalProperties': False}
get_task
One task with its full state
A single task: schedule, destination, state, next run, and how many failures in a row it carries.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Task id (UUID), as returned by create_task or list_tasks.'}}, 'additionalProperties': False}
list_destinations
List your destinations
The URLs you have claimed and whether each is verified. The signing secrets are never shown again.
Eingabeschema
{'type': 'object', 'properties': {}, 'additionalProperties': False}
list_tasks
List your scheduled tasks
Your tasks and their state. Needs your management token as an Authorization header on this connection.
Eingabeschema
{'type': 'object', 'properties': {'after': {'type': 'string', 'description': 'Cursor from a previous page.'}, 'limit': {'type': 'integer', 'description': 'How many to return.'}, 'state': {'type': 'string', 'description': 'Filter by state: live (default), all, or one exact state such as active or paused_by_client.'}}, 'additionalProperties': False}
pause_task
Pause a task
Stop firing until you resume. Nothing is charged while a task is paused.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Task id (UUID), as returned by create_task or list_tasks.'}}, 'additionalProperties': False}
register_destination
Register a destination URL
Claim 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.
Eingabeschema
{'type': 'object', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'The https:// URL you control.'}}, 'additionalProperties': False}
restore_task
Restore a deleted task
Bring a task back from the recycle bin within 30 days. It comes back PAUSED — resume it explicitly.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Task id (UUID), as returned by create_task or list_tasks.'}}, 'additionalProperties': False}
resume_task
Resume a paused task
Start firing again on the schedule. Refused if your balance is empty — buy deliveries first.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Task id (UUID), as returned by create_task or list_tasks.'}}, 'additionalProperties': False}
run_task_now
Fire a task once, right now
Deliver 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.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Task id (UUID), as returned by create_task or list_tasks.'}}, 'additionalProperties': False}
update_task
Edit a task
Change 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.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Task id (UUID), as returned by create_task or list_tasks.'}, 'url': {'type': 'string', 'description': 'The https:// destination. It must already be registered and verified — see register_destination.'}, 'body': {'description': 'The body we send. Stored in the clear, so it must not carry credentials. A non-string is serialized as JSON.'}, 'cron': {'type': 'string', 'description': '5 fields, UTC only, one minute at the finest. Operators: * a-b a,b */n a-b/n. Names: SUN-SAT (day), JAN-DEC (month). Macros: @yearly @annually @monthly @weekly @daily @midnight @hourly. Day-of-week is 0-6 with 0 = Sunday; 7 also means Sunday. Write days as names (MON-FRI). Numbers differ between schedulers: Quartz, AWS EventBridge and Cloudflare number Sunday as 1, we and croniter as 0. Translated for you: "?". "?" as a whole day-of-month or day-of-week field becomes "*". A NUMERIC day-of-week next to "?" is refused, because "?" means the expression was written where Sunday is 1. Refused: Quartz L, Quartz W, Quartz #, six fields (seconds), seven fields (year), @reboot, @every, CRON_TZ= prefixes, time zones of any kind — each with a code saying what to send instead.'}, 'name': {'type': 'string', 'description': 'Your name for the task. Unique among your live tasks; creating with an existing name updates it.'}, 'method': {'type': 'string', 'description': 'HTTP method of the delivery. Default POST. GET and HEAD carry no body.'}, 'headers': {'type': 'object', 'description': 'Headers we send with the delivery. Stored ENCRYPTED at rest — put credentials here, never in the body.'}, 'timeoutMs': {'type': 'integer', 'description': 'How long we wait for your server, 250-2000 ms. Answer 202 and do the work behind it.'}}, 'additionalProperties': False}
verify_destination
Verify a registered destination
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. Until this passes, no task may point at the destination.
Eingabeschema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'integer', 'description': 'Destination id, as returned by register_destination.'}}, 'additionalProperties': False}
Verlauf
Letzte Tool-Änderungen
Geändert
verify_destination
19. September 2026 02:50
Geändert
register_destination
19. September 2026 02:50
Geändert
get_docs
19. September 2026 02:50
Hinzugefügt
delete_destination
17. September 2026 07:58
Hinzugefügt
list_destinations
17. September 2026 07:58
Hinzugefügt
verify_destination
17. September 2026 07:58
Hinzugefügt
register_destination
17. September 2026 07:58
Hinzugefügt
restore_task
17. September 2026 07:58
Hinzugefügt
delete_task
17. September 2026 07:58
Hinzugefügt
run_task_now
17. September 2026 07:58
Hinzugefügt
resume_task
17. September 2026 07:58
Hinzugefügt
pause_task
17. September 2026 07:58
Hinzugefügt
update_task
17. September 2026 07:58
Hinzugefügt
create_task
17. September 2026 07:58
Hinzugefügt
get_task
17. September 2026 07:58
Hinzugefügt
list_tasks
17. September 2026 07:58
Hinzugefügt
get_service_status
17. September 2026 07:58
Hinzugefügt
get_docs
17. September 2026 07:58
Hinzugefügt
get_pricing
17. September 2026 07:58
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