generated: '2026-09-14'
method: searched
source: >-
  https://playground.nileslabs.com (product positioning), /product.json and
  /llms-full.txt, fetched 2026-09-14. GitHub: nileslabs/playground_api (MIT).
api: Playground REST API
plan_count: 1
currency: USD
plans:
  - name: Free
    price: 0
    billing_period: none
    signup_required: false
    auth_required: false
    license: MIT
    included:
      - Full REST + GraphQL mock surface, no key
      - Stateful per-session mutation overlays
      - Dynamic custom collections + domain seed templates
      - SVG avatar + thumbnail generators
      - Network/chaos simulation (latency, status, rate-limit)
      - OpenAPI, Postman, Bruno, Insomnia and TypeScript downloads
    limits:
      overlay_records_per_resource: 30
      session_retention_days: 10
      max_page_size: 200
    overage: none
note: >-
  Playground API is entirely free and open (MIT), with no tiers, no paid plans,
  no signup and no billing. The single Free plan is recorded with its published
  operational limits. There is no enterprise/contact-sales tier.