API Rate Limits | Anytime Capital Docs

Each API key may make 100 requests a minute, counted per key, in fixed one-minute windows. MCP tool calls count against the key they use, exactly like REST requests. Past the limit, requests answer 429 with a Retry-After header giving the seconds to wait.

Over the limit

HTTP/1.1 429 Too Many Requests
Retry-After: 42
Content-Type: application/json

{
  "error": {
    "code": "RATE_LIMITED",
    "message": "Too many requests. Each key may make 100 requests a minute."
  }
}

Staying under the limit

Use webhooks to learn about payments instead of polling the list endpoints.
Page with the largest limit you need (up to 100) and filter on the server.
Give each integration its own key: each key has its own limit, and you can revoke one without the others.
On 429, wait Retry-After seconds before retrying; don't retry in a tight loop.

Other limits

Limit	Answer
An invoice can be emailed at most once every 24 hours (Send invoice)	`429 TOO_SOON` with `Retry-After`
A payment link's price is $1.00 to $10,000.00	`400 INVALID_INPUT`
An invoice totals $1.00 to $100,000.00	`400 INVALID_INPUT`

Anytime Capital is a fintech company, not a bank. Payment processing, banking and payout services are provided by Anytime Capital's licensed partners. Rates shown are for US card payments; international cards, currency conversion and disputes may carry additional fees shown in your dashboard before you accept a payment.

Over the limit

HTTP/1.1 429 Too Many Requests
Retry-After: 42
Content-Type: application/json

{
  "error": {
    "code": "RATE_LIMITED",
    "message": "Too many requests. Each key may make 100 requests a minute."
  }
}

Staying under the limit

Use webhooks to learn about payments instead of polling the list endpoints.
Page with the largest limit you need (up to 100) and filter on the server.
Give each integration its own key: each key has its own limit, and you can revoke one without the others.
On 429, wait Retry-After seconds before retrying; don't retry in a tight loop.

Other limits

Limit	Answer
An invoice can be emailed at most once every 24 hours (Send invoice)	`429 TOO_SOON` with `Retry-After`
A payment link's price is $1.00 to $10,000.00	`400 INVALID_INPUT`
An invoice totals $1.00 to $100,000.00	`400 INVALID_INPUT`

Rate limits

Staying under the limit

Other limits

Rate limits

Staying under the limit

Other limits