specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: kapa.ai
providerId: kapa-ai
created: '2026-06-20'
modified: '2026-06-20'
reconciled: false
tags:
- AI
- Answer Engine
- RAG
- Documentation
- Developer Tools
- Rate Limiting
- Quotas
- Throttling
description: >-
  The kapa.ai Query API authenticates with an X-API-KEY and meters usage
  primarily by questions/answers against a contracted monthly volume rather
  than by a published per-second request rate. kapa.ai does not document a
  public numeric rate-limit table; per-account request throttling and the
  monthly question quota are governed by the customer's plan and enforced
  server-side. Specific per-endpoint values are not reconciled in this
  artifact.
notes: >-
  Verify concurrency limits, per-key request throttling, and the contracted
  monthly question quota with kapa.ai during reconciliation; values vary by
  agreement.
sources:
- https://docs.kapa.ai/api/overview
- https://docs.kapa.ai/api/quickstart
- https://docs.kapa.ai/api/faq
responseCodes:
  throttled: 429
limits:
- name: Monthly Questions Quota
  scope: account
  metric: questions
  limit: see agreement
  notes: Licensed volume of questions/answers per month set by the plan.
- name: Requests Per Minute (RPM)
  scope: api_key
  metric: requests
  limit: see provider documentation
  notes: Per-key request throttling; not published as a public numeric value.
- name: Concurrent Requests
  scope: api_key
  metric: concurrent
  limit: see provider documentation
  notes: Concurrency for chat and streamed chat endpoints, governed by plan.
policies:
- name: Quota-Based Limits
  description: Usage is bounded by the contracted monthly question volume; overages are billed or throttled per agreement.
- name: Backoff Strategy
  description: Clients should implement exponential backoff with jitter on 429 responses and honor Retry-After when present.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com