generated: '2026-08-12'
method: searched
source: https://knowledgebase.constantcontact.com/lead-gen-crm/articles/KnowledgeBase/50374-Understanding-Lead-Gen--CRM-Open-API-Overview?lang=en_US
docs: https://knowledgebase.constantcontact.com/lead-gen-crm/articles/KnowledgeBase/50374-Understanding-Lead-Gen--CRM-Open-API-Overview?lang=en_US
limit_count: 5
headers_published: false
note: >-
  SharpSpring publishes hard numeric limits in the Open API overview, which is more than most
  providers do — but it publishes no runtime signal. There is no documented X-RateLimit-*, RateLimit-*
  or Retry-After header, and exhaustion is not reported as HTTP 429: it comes back as an application
  error code (106 daily, 107 per-second, 209 per-request query count) inside a 200-level JSON envelope.
  An agent therefore cannot discover its remaining budget from a response; it can only detect
  exhaustion after the fact by parsing the error object. Limits could not be verified live because the
  endpoint requires an account credential.
rate_limits:
- scope: per-account
  window: 1 day
  limit: 50000
  unit: API requests
  note: stated as the default; the docs do not say whether it varies by plan
  exhaustion:
    error_code: 106
    message: Exceeded daily method call limit.
    http_status: 200
- scope: per-account
  window: 1 second
  limit: 10
  unit: queries per second
  exhaustion:
    error_code: 107
    message: Exceeded per second method call limit.
    http_status: 200
- scope: per-request
  window: n/a
  limit: 500
  unit: queries per request
  exhaustion:
    error_code: 209
    message: Attempting to execute an excess amount of queries.
- scope: per-request
  window: n/a
  limit: 100
  unit: leads per lead-processing call
  exhaustion:
    error_code: 222
    message: You have exceeded the amount of leads to process. A max of 100 leads is allowed.
- scope: per-account
  window: 1 day
  limit: 1000000
  unit: contacts addable
  note: published as an approximate throughput figure ("approximately 1 million contacts per day")
response_headers:
  rate_limit_headers: none documented
  retry_after: none documented
  status_on_exhaustion: not 429 — an application error code in a 200 response envelope
x-evidence:
  fetched: '2026-08-12'
  probes:
  - url: https://knowledgebase.constantcontact.com/lead-gen-crm/articles/KnowledgeBase/50374-Understanding-Lead-Gen--CRM-Open-API-Overview?lang=en_US
    status: 200
  - url: https://api.sharpspring.com/pubapi/v1.2/
    status: 401
    note: anonymous probe returned no rate-limit headers of any kind