generated: '2026-07-27'
method: searched
source: >-
  IMO_SPEC_0100 paragraphs 18/22/46, IESO_Reports_API_Guide.pdf, MWT-User-Guide.pdf, SPEC-249, the
  IESO IT Release Schedule and the Market Participant Testing pages; every host probed 2026-07-27
docs: https://www.ieso.ca/sector-participants/technical-interfaces
note: >-
  IESO operates a full parallel sandbox estate — every production interface has a named sandbox twin,
  and the sandbox is a scheduled stage of the release train, going live roughly six weeks before each
  production build. There are no magic test values, test cards or fixture generators: the sandbox is a
  mirrored environment with its own credentials, not a simulator. The public report sandbox is the one
  piece of it anyone can use anonymously.
model: mirrored-environment
test_values_published: false
test_credential_self_serve: false
credential_note: >-
  Verbatim from the reports-sandbox landing page — the system "is owned and operated by the IESO,
  governed by the Market Rules, and registered Participants receive a unique and confidential User
  Account and Password to access this system." Sandbox credentials are distinct from production
  credentials; IESO warns participants to ensure "the credentials being used to connect to the IESO
  MRP systems are specific to the IESO Sandbox environment to minimize connection issues."
environments:
- name: public reports sandbox
  covers: ieso:ieso-public-reports-repository
  url: https://reports-public-sandbox.ieso.ca/public/
  production_twin: https://reports-public.ieso.ca/public/
  auth: none
  probe: {status: 200, date: '2026-07-27', note: 'Directory index served anonymously, same shape as production.'}
  source: IMO_SPEC_0100 paragraph 18
- name: confidential reports sandbox
  covers: ieso:ieso-reports-site-rest-api
  url: https://reports-sandbox.ieso.ca/
  api_endpoint: https://reports-sandbox.ieso.ca/api/v1.4/files?idp_id=ieso
  production_twin: https://reports.ieso.ca/api/v1.4/files?idp_id=ieso
  auth: HTTP Basic with a sandbox machine account
  probe: {status: 401, date: '2026-07-27'}
  source: IMO_SPEC_0100 paragraphs 22 and 46
  example_request: >-
    curl -k -u username:password https://reports-sandbox.ieso.ca/api/v1.4/files?idp_id=ieso
- name: MIM web services sandbox
  covers: ieso:ieso-mim-web-services
  url: https://webservices-sandbox.ieso.ca/emim
  production_twin: https://webservices.ieso.ca/emim
  auth: UserID/password in the form user@participantName, plus source-IP allow-listing
  toolkit_property: ws.client.end.point = https://webservices-sandbox.ieso.ca/emim
  probe: {status: '000', date: '2026-07-27', note: 'No connection from the open internet — consistent with IP allow-listing.'}
  source: MWT-User-Guide.pdf
- name: MIM web services sandbox (Market Renewal)
  covers: ieso:ieso-mim-web-services
  url: https://webservices-sandboxmrp.ieso.ca/emim
  auth: UserID/password plus source-IP allow-listing
  probe: {status: '000', date: '2026-07-27'}
  source: >-
    IESO Market Participant Testing guidance — "Market Participants using WSDL and sample files for
    Market Trials should ensure that the endpoint is https://webservices-sandboxmrp.ieso.ca/emim."
  note: Market Renewal Program trials endpoint, distinct from the standing MIM sandbox.
- name: Online IESO sandbox
  covers:
  - ieso:ieso-registration-facilities-api
  - ieso:ieso-retrofit-api
  - ieso:ieso-retrofit-service-provider-api
  url: https://onlinesandbox.ieso.ca/suite/webapi/
  production_twin: https://online.ieso.ca/suite/webapi/
  auth: Appian API key (Basic username, Appian-API-Key header, or Bearer)
  probe: {status: 200, date: '2026-07-27', note: 'Appian shell resolves; API calls require a key.'}
  source: FacilityAPISpecification-SPEC-249.pdf
release_alignment:
  description: >-
    Sandbox implementation is a dated stage of every IESO release, landing before the production
    build so participants can test interface changes against the new baseline.
  upcoming:
  - {baseline: R56.0, sandbox: '2026-07-30', production: '2026-09-09'}
  - {baseline: R56.1, sandbox: '2026-10-22', production: '2026-12-02'}
  source: https://www.ieso.ca/sector-participants/change-management/it-release-schedule
market_trials:
  docs: https://ieso.ca/en/Market-Renewal/Market-Participant-Readiness/Market-Participant-Testing
  scope: >-
    During Market Trials, participants test the sandbox Energy Market Interface (EMI), Market
    Information Management (MIM) system and IESO Reports — the full cycle from day-ahead bid and
    offer submission through real-time dispatch instruction receipt and report/settlement download.
  sample_payloads: https://www.ieso.ca/-/media/Files/IESO/technical-interfaces/mp-submissions/MIM-sample-request-response.zip
gaps:
- No test card, test IBAN, magic identifier or fixture-trigger surface — not applicable to this domain.
- No time simulation or test-clock facility is published.
- Sandbox access for every gated interface still requires an IESO-issued account.