Call limits

Every plan includes a number of calls per month, and every service answers at most 1,000 calls per minute. This page explains what counts as a call, what happens at each limit, and where you see the calls of the month.

Calls per month

The calls are counted per account, over all its services together, in the calendar month. The month starts on the 1st at 00:00 UTC. Unused calls do not carry over.

What counts as a call

One call is one request that a published service answers with a calculation. It does not matter how it arrives:

• over the API, including Run Test (Test starten) on the API tab
• from an AI assistant
• from the web app or a web snippet
• from an automation tool such as n8n, Zapier or Power Automate

These also count:

• a call that is answered from the cache
• a call that the service answers with an error, for example because a required input is missing
• each calculated scenario of a batch call; see Batch calls
• a download of the results as an Excel file, when you allowed Excel export

These do not count:

• testing a draft in the app with the test button
• working in the editor, saving and publishing
• a call that is refused with HTTP 404 or HTTP 429
• a call to a token-protected service without a valid token; it is listed on the Usage tab as an error
• reading the documentation or the description of a service

What happens when the month's calls are used up

All services of the account stop calculating until the month ends. They stay published, and nothing is deleted.

• Over the API, a call answers HTTP 429 with the error "Monthly call limit reached".
• An AI assistant gets a message that the account has used its calls for the month and that it should tell the user instead of trying again.
• The web app and automation tools cannot calculate either, because they call the same service.

Calls work again:

• on the 1st of the next month (UTC), automatically, or
• shortly after you move to a larger plan. See Upgrade and billing.

Where you see the calls of the month

1. Open the service list.
2. Click Analytics.
3. The card This Month (Dieser Monat) shows the calls of the current month and the calls of your plan, for example "640 of 1,000". The number turns red when the limit is passed.

The same standing is on every service: open the service, click Usage (Nutzung) and read the line Calls this month (Aufrufe diesen Monat) below the tiles, for example "Calls this month: 640 of 1,000 (account)". It counts all services of the account.

The table below lists the calls per service, so you see which service uses the most. See Account analytics. For one service, its Usage (Nutzung) tab shows calls per day by channel and who is calling; see Usage overview.

The per-minute limit

Separate from the plan, one service answers at most 1,000 calls per minute, all callers together. This is the same on every plan and protects a service from a runaway loop.

A call above it answers HTTP 429 with a Retry-After header that gives the seconds to wait. Wait and send the same call again. Calls refused this way do not count towards the month.

Use fewer calls

• Let your application remember a result instead of asking again for the same inputs.
• Send several scenarios in one request only where you need them; each scenario counts.
• Protect the service with a token so that only your own callers can use it. See Tokens and access.
• Check Who is calling (Wer ruft auf) on the Usage tab to find a caller that calls more often than expected.

For developers and agents

Month's calls used up:

HTTP 429
{
  "error": "Monthly call limit reached",
  "code": "CALL_LIMIT_REACHED",
  "message": "This service's account has used its 1,000 calls for this month. Calls work again on the 1st (UTC), or right away on a larger plan."
}

Too many calls per minute:

HTTP 429
Retry-After: 60
X-RateLimit-Limit: 1000
X-RateLimit-Remaining: 0

{
  "error": "RATE_LIMIT_EXCEEDED",
  "message": "Rate limit exceeded. Maximum 1000 requests per minute."
}

• Tell the two apart by the body: code is CALL_LIMIT_REACHED for the month; error is RATE_LIMIT_EXCEEDED with a Retry-After header for the minute.
• On CALL_LIMIT_REACHED, do not retry. Tell the account owner; calls work again on the 1st (UTC) or after an upgrade.
• On RATE_LIMIT_EXCEEDED, wait for the seconds in Retry-After, then repeat the call.
• An agent connected to the account gets the code call_limit_reached (HTTP 429) for the month and too_fast (HTTP 429, with retry_after in seconds) for its own per-minute limit. The calls of the plan are in what_can_you_do under account.calls_per_month.
• More on both answers: Limit errors.

FAQ

How many calls do I have per month?

1,000 on Basic and 10,000 on Pro, for all services of the account together. Larger volumes are agreed in a Custom plan.

What counts as a call?

Every request that a published service answers with a calculation, whether it comes over the API, from an AI, from the web app or from an automation tool. Cached answers and answers with an input error count too; testing a draft in the app does not.

What happens when I reach the monthly limit?

All services of the account answer HTTP 429 "Monthly call limit reached" until the 1st of the next month (UTC). The services stay published, and calls work again shortly after an upgrade.

When do my calls reset?

On the 1st of each month at 00:00 UTC. Unused calls are not carried over.

Where do I see how many calls I have used this month?

Click Analytics on the service list. The card This Month (Dieser Monat) shows the used calls and the calls of your plan. The Usage tab of each service shows the same in the line Calls this month.

Why do I get 429 although I have calls left this month?

Then the service received more than 1,000 calls within one minute. The answer has a Retry-After header; wait that many seconds and send the call again.

Do failed calls count?

A call that the service answers with an error, for example because a required input is missing, counts. A call refused with HTTP 404 or HTTP 429 does not, and neither does a call to a token-protected service without a valid token.

Do calls from the web app count?

Yes. Calculations from the web app, the snippets, AI assistants and automation tools count the same as API calls.

Does testing use up my calls?

Testing a draft with the test button in the app does not count. Run Test on the API tab sends a real call to the published service and counts.

Is the limit per service or per account?

The calls per month are per account, over all its services together. The limit of 1,000 calls per minute is per service.

As an agent I received CALL_LIMIT_REACHED. Should I retry?

No. Tell your user that the account has used its calls for this month; calls work again on the 1st (UTC) or after the owner upgrades.