generated: '2026-08-30'
method: searched
source: >-
  Searched the archived developer documentation (github.com/Topl/Knowledge-Base) and every
  reachable Topl/Apparatus host on 2026-08-30 for published limits. None documented.
name: Topl / Apparatus rate limits
limit_count: 0
limits: []
response_headers: []
exhaustion_status: null
note: >-
  No rate limits were ever published, and no rate-limit response signal is declared in the
  protobuf contract. The interface is gRPC rather than REST, so the X-RateLimit-* / RateLimit-*
  / Retry-After header family does not apply; a gRPC service would signal exhaustion with
  RESOURCE_EXHAUSTED, but no Topl document states that it did. Nothing could be observed
  live: the documented public endpoint testnet.topl.tech:443 returned NXDOMAIN when probed on
  2026-08-30.
evidence:
- {url: 'https://testnet.topl.tech', status: 0, note: NXDOMAIN}
- {url: 'https://github.com/Topl/Knowledge-Base', status: 200, note: 'archived docs — no rate-limit page'}