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Tools · Published 2026-09-29

Agent budget calculator

Turn a monthly email volume into budget_per_period and rate_ceiling_per_minute, plus the PATCH body and the set_limit call.

Period budget 1,000 a month. Per-minute ceiling 1. The smallest published inclusion that holds this is Free (1,000 a month). That plan stops at 100 a day.

PATCH /limits/keys/{id}

{
  "budget_per_period": 1000,
  "period": "monthly",
  "rate_ceiling_per_minute": 1
}

set_limit

{
  "api_key_id": "<api_key_id>",
  "budget_per_period": 1000,
  "rate_ceiling_per_minute": 1
}

Type the number of emails one key may send in a month. The calculator writes budget_per_period and rate_ceiling_per_minute for PATCH /limits/keys/{id}, and the same numbers for set_limit. The period is monthly. The per-minute ceiling is that budget spread across the month, and it never goes above the default of 600.

A key budget cannot be higher than the plan's inclusion. The smallest published inclusion that holds the number is named under the field. Paid plans: No plan daily cap; delivery paced per inbox provider.

Applying the body needs a key with permission to edit limits. The calculator itself does not. Read how to put a spending limit on an agent, the DNS check, and the bounce decoder.