generated: '2026-07-18'
method: searched
source: https://coasty.ai/api/discovery
signal:
  retry_after_header: Retry-After
  status_code: 429
rate_limits:
- name: webhook-fires
  scope: per-webhook
  limit_count: 60
  interval: minute
  description: Default schedule webhook fire limit.
- name: concurrent-agents
  scope: account-tier
  limit_count: 5
  interval: concurrent
  description: Concurrent swarm agents on the Unlimited plan (abuse cap); varies by tier.
platform_limits:
- name: max_screenshot_base64_chars
  value: 10485760
- name: min_screenshot_base64_chars
  value: 100
- name: max_task_instruction_chars
  value: 32000
- name: max_prompt_component_chars
  value: 16000
- name: max_trajectory_steps
  value: 20
- name: max_filterable_tools
  value: 8
- name: session_inactivity_ttl_seconds
  value: 7200
- name: max_run_deadline_seconds
  value: 86400
- name: batch_actions_max
  value: 50
- name: machine_ttl_minutes_min
  value: 5
- name: machine_ttl_minutes_max
  value: 10080
notes:
- Webhook fires require a $0.20 API-wallet balance as an anti-abuse gate (not a per-fire fee).
- Rate-limit tiers scale with the subscription tier; Enterprise gets custom limits.