generated: '2026-07-27'
method: searched
source:
- https://www.spp.org/documents/28853/spp%20public%20data%20access%2020230707.pdf
- live probes of the itespp.org MTE hosts on 2026-07-27
note: >-
  SPP runs a parallel Model Test Environment (MTE) on the itespp.org domain that
  mirrors its production stakeholder systems. SPP's own Public Data Access guide
  (v3.0, July 2023) names the MTE public data FTP site alongside production,
  which is how the environment was found; the HTTP mirrors were then confirmed by
  probe. This is a member test environment for market systems, not a developer
  sandbox: the public-data half is reachable anonymously and returns real-shaped
  test data, but there is no self-serve signup, no test credential issuance, no
  fixture/trigger tooling and no published test values. Member access to the
  gated MTE systems is provisioned through the same certificate-plus-UAA path as
  production. Nothing in this file is invented — every host below was probed on
  2026-07-27 and its status recorded.
environments:
- name: production
  hosts:
    public_data_ftp: ftp://pubftp.spp.org
    portal: https://portal.spp.org
    marketplace: https://marketplace.spp.org
    uaa: https://uaa.spp.org
- name: model-test-environment
  abbreviation: MTE
  domain: itespp.org
  documented_by: SPP Public Data Access v3.0 (names ftp://pubftp-mte.itespp.org as the MTE public data site)
  hosts:
  - {host: 'ftp://pubftp-mte.itespp.org', status: 226, note: 'anonymous FTP listing succeeded; 16 top-level directories including Markets, Operational_Data, Operations_Reports, Settlements, Reliability, TCR, Market_Monitoring, West_EIS'}
  - {host: 'https://portal-mte.itespp.org', status: 200, note: 'MTE mirror of the SPP Portal single-page app'}
  - {host: 'https://marketplace-mte.itespp.org', status: 302, note: 'redirects to the MTE portal, mirroring production marketplace.spp.org behaviour'}
  - {host: 'https://uaa-mte.itespp.org', status: 200, note: 'MTE mirror of SPP UAA; React shell, no anonymous discovery document'}
  verified_endpoints:
  - url: https://portal-mte.itespp.org/file-browser-api/download/rtbm-mcp?path=/RTBM-MCP-latestInterval.csv
    status: 200
    content_type: text/csv
    bytes: 1078
    note: same dataset slug and path convention as production, anonymous
  - url: https://portal-mte.itespp.org/chart-api/gen-mix/asChart
    status: 200
    content_type: application/json
    bytes: 4788
    note: same chart feed contract as production, anonymous
test_credentials:
  published: false
  note: >-
    No test certificates, test API keys, magic identifiers or test market
    participant IDs are published. MTE access to gated systems requires the same
    OATI webCARES x.509 certificate and SPP UAA role assignment as production,
    requested through an RMS ticket.
test_values: []
fixtures_or_triggers: none published
time_simulation: none published
usage_guidance: >-
  Use the MTE hosts to develop and rehearse against SPP's public-data path
  conventions without touching production, and to validate a client's handling of
  dataset slugs, date-partitioned paths and CSV column headers. Do not treat MTE
  prices, load or generation values as market truth — it is a model environment.