generated: '2026-08-13'
method: searched
source: https://www.zoho.com/crm/developer/docs/api/v8/api-limits.html
model: credits
model_note: >-
  Zoho CRM does not meter raw request counts. It meters API CREDITS on a rolling
  24-hour window per org, and separately caps SIMULTANEOUS active calls
  (concurrency) per org per connected app. Most calls cost 1 credit; some cost far
  more (bulk write initialize and custom-module creation are 500 credits each).
limit_count: 12
window: rolling 24 hours from the start of the call
limits:
- scope: per-org-per-day
  edition: Free
  metric: api_credits
  window: 24h rolling
  limit: 5000
  maximum: 5000
- scope: per-org-per-day
  edition: Standard / Starter
  metric: api_credits
  window: 24h rolling
  limit: 50000 + (users x 250) + add-ons
  maximum: 100000
- scope: per-org-per-day
  edition: Professional
  metric: api_credits
  window: 24h rolling
  limit: 50000 + (users x 500) + add-ons
  maximum: 3000000
- scope: per-org-per-day
  edition: Enterprise / Zoho One
  metric: api_credits
  window: 24h rolling
  limit: 50000 + (users x 1000) + add-ons
  maximum: 5000000
- scope: per-org-per-day
  edition: Ultimate / CRM Plus
  metric: api_credits
  window: 24h rolling
  limit: 50000 + (users x 2000) + add-ons
  maximum: unlimited
- scope: per-org-per-app
  edition: Free
  metric: concurrent_calls
  limit: 5
- scope: per-org-per-app
  edition: Standard / Starter
  metric: concurrent_calls
  limit: 10
- scope: per-org-per-app
  edition: Professional
  metric: concurrent_calls
  limit: 15
- scope: per-org-per-app
  edition: Enterprise / Zoho One
  metric: concurrent_calls
  limit: 20
- scope: per-org-per-app
  edition: Ultimate / CRM Plus
  metric: concurrent_calls
  limit: 25
- scope: per-endpoint-class
  edition: all
  metric: sub_concurrency
  limit: 10
  note: '"The sub-concurrency limit for the above APIs is 10 for all the CRM editions."'
- scope: per-call
  metric: credit_cost
  limit: 1
  note: >-
    Baseline cost of a standard call. Insert/update/upsert cost 1 credit per 10
    records; Convert Lead costs 5 credits; Bulk Write Initialize and Create Custom
    Module cost 500 credits each.
headers:
- name: X-API-CREDITS-REMAINING
  direction: response
  emitted_when: usage for the 24-hour window reaches 50% or above
  note: >-
    This is the only rate-limit signal Zoho documents on the response. There is no
    X-RateLimit-Limit / RateLimit-* / Retry-After documented, so an agent gets a
    remaining-credits number only after it is already halfway through the day's
    budget, and gets no reset timestamp at all.
exhaustion:
  http_status: 429
  meaning: >-
    "Number of API requests for the 24 hour period is exceeded or the concurrency
    limit of the user for the app is exceeded." (status-codes.html)
  error_keyword: TOO_MANY_REQUESTS
  retry_after_header: false
docs:
- https://www.zoho.com/crm/developer/docs/api/v8/api-limits.html
- https://www.zoho.com/crm/developer/docs/api/v8/status-codes.html