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: Norgate Data
providerId: norgate-data
created: '2026-07-11'
modified: '2026-07-11'
reconciled: false
tags:
- Market Data
- Financial Data
- Historical Data
- Rate Limiting
- Quotas
description: >-
  Norgate Data does not expose a hosted public API and therefore publishes no
  per-request HTTP rate limits or quotas. Programmatic access via the norgatedata
  Python package runs against a local Norgate Data Updater (NDU) database on the
  subscriber's own Windows machine, so query throughput is bounded only by local
  CPU, disk and memory - not by a network API gate. The only network activity is
  NDU itself downloading the daily EOD update from Norgate's servers; that
  synchronization is governed by Norgate's terms of service and fair-use, not by a
  documented per-minute request cap. Data is redistributed under a single-user
  license; bulk redistribution or multi-user server access is contractually
  restricted rather than rate-limited.
notes: >-
  No numeric API rate limits exist because there is no public HTTP/REST API. NDU
  is a single-user desktop application (server editions are limited to one
  installed account). Verify licensing and fair-use terms with Norgate rather than
  looking for API quotas.
sources:
- https://pypi.org/project/norgatedata/
- https://norgatedata.com/
- https://norgatedata.com/data-package-faq.php
responseCodes: {}
limits:
- name: Public API Requests
  scope: account
  metric: requests
  limit: not applicable
  notes: No hosted public HTTP/REST API exists; access is a local library over the NDU database.
- name: Local Query Throughput
  scope: machine
  metric: queries
  limit: hardware-bound
  notes: norgatedata queries run against the local NDU database and are limited only by local machine resources.
- name: Daily Data Synchronization
  scope: subscription
  metric: updates
  limit: daily EOD update
  notes: NDU downloads the end-of-day update once available each trading day, governed by Norgate fair-use, not an API quota.
- name: Concurrent Users
  scope: license
  metric: users
  limit: single user
  notes: Single-user license; server installs are restricted to a single installed account and not designed for server-wide multi-user access.
policies:
- name: Local Service Model
  description: All queries resolve against a local NDU database; there is no network round-trip per query and thus no server-side throttling.
- name: Multithreading Support
  description: The norgatedata package is documented as multithreading / multiprocessing compatible for parallel local queries.
- name: Fair Use and Licensing
  description: Data access and redistribution are governed by Norgate's single-user license and terms of service rather than by API rate limits.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com