generated: '2026-07-26'
method: searched
source: >-
  https://trestle-documentation.corelogic.com/webapi-libraries.html and
  https://trestle-documentation.corelogic.com/rets-libraries.html — the two
  pages Trestle publishes for client libraries — plus registry checks against
  npm, PyPI, Packagist, Maven Central, NuGet and RubyGems for a first-party
  "trestle" client.
description: >-
  Trestle ships NO first-party SDK in any language. Both library pages document
  how to bend third-party RESO/RETS/OData libraries into working with Trestle's
  OAuth2 client_credentials flow — the PHP and Python RESO clients need their
  token request patched, Apache Olingo needs a custom OAuth2-aware HttpClient
  factory, and RestSharp needs a custom authenticator. Every entry below is
  third-party (official: false); none is published or maintained by Trestle,
  CoreLogic or Cotality. No package named trestle exists on npm, PyPI,
  Packagist, Maven Central, NuGet or RubyGems.

first_party_sdks: false
first_party_note: >-
  The closest thing to a first-party client is RETS Connector, a CoreLogic
  desktop tool for bulk RETS pulls, documented at
  https://trestle-documentation.corelogic.com/rets-connector.html — a GUI
  application, not a package or a CLI.

packages:
  - language: php
    registry: composer
    name: RESO-WebAPI-Client-PHP
    url: https://github.com/RESOStandards/RESO-WebAPI-Client-PHP
    install: composer (or manual install per the repo README)
    official: false
    maintainer: RESO (Real Estate Standards Organization)
    surface: Trestle RESO Web API
    note: >-
      Documented as compatible with Trestle "except for the authentication
      portion" — the $params array in requestAccessToken() in
      lib/OpenIDConnect.php must be changed to a client_credentials grant.
  - language: python
    registry: pypi
    name: reso_api
    url: https://github.com/RESOStandards/RESO-WebAPI-Client-PHP
    install: n/a — Trestle documents the class, not an install command
    official: false
    maintainer: third party (RESO WebAPI Python client)
    surface: Trestle RESO Web API
    note: >-
      Trestle publishes an OAuth2Authentication subclass of OpenIDAuthentication
      that overrides request_access_token() for the client_credentials grant.
      Trestle links no canonical repository or PyPI page for this library.
  - language: java
    registry: maven
    name: org.apache.olingo (Olingo OData client)
    url: https://olingo.apache.org/
    install: Maven/Gradle dependency on Apache Olingo
    official: false
    maintainer: Apache Software Foundation
    surface: Trestle RESO Web API
    note: >-
      Requires a custom OAuth2HttpClientFactory extending
      DefaultHttpClientFactory that injects the Bearer token and strips
      OData-MaxVersion. RESO's WebAPI Commander
      (https://github.com/RESOStandards/web-api-commander/) is built on Olingo.
  - language: java
    registry: github
    name: web-api-commander
    url: https://github.com/RESOStandards/web-api-commander/
    install: build from source
    official: false
    maintainer: RESO
    surface: Trestle RESO Web API
  - language: csharp
    registry: nuget
    name: RestSharp
    url: https://www.nuget.org/packages/RestSharp
    install: dotnet add package RestSharp
    official: false
    maintainer: RestSharp project
    surface: Trestle RESO Web API
    note: >-
      No OData bindings; Trestle documents an AuthenticatorBase subclass that
      fetches and injects the Bearer token.
  - language: javascript
    registry: npm
    name: openresync
    url: https://github.com/tylercollier/openresync
    install: clone / npm install per the repo
    official: false
    maintainer: Tyler Collier
    surface: Trestle RESO Web API (replication)
    homepage: https://openresync.com
    note: >-
      Open-source Node.js replication tool that syncs RESO Web API sources
      (Trestle, MLS Grid, Bridge Interactive) into MySQL/Solr. Named by Trestle
      under "Synchronization Tools".
  - language: cpp
    registry: github
    name: libRETS
    url: https://github.com/NationalAssociationOfRealtors/libRETS
    install: build from source
    official: false
    maintainer: National Association of Realtors
    surface: Trestle RETS
  - language: ruby
    registry: rubygems
    name: rets
    url: https://github.com/estately/rets
    install: gem install rets
    official: false
    maintainer: Estately
    surface: Trestle RETS
  - language: javascript
    registry: npm
    name: rets-client
    url: https://github.com/sbruno81/rets-client
    install: npm install rets-client
    official: false
    maintainer: sbruno81
    surface: Trestle RETS
  - language: php
    registry: packagist
    name: PHRETS
    url: https://github.com/troydavisson/PHRETS
    install: composer require troydavisson/phrets
    official: false
    maintainer: Troy Davisson
    surface: Trestle RETS

registries_probed:
  - registry: npm
    query: trestle
    first_party_hit: false
    note: >-
      Hits are all unrelated homonyms — trestle (an Express/Jade project
      generator), @trestlescan/cli-* (a secret scanner), and
      n8n-nodes-trestle / @pipedream/trestle, which wrap Trestle IQ's phone
      validation and contact verification API (trestleiq.com), a DIFFERENT
      company. None relates to CoreLogic/Cotality Trestle MLS data.
  - registry: pypi
    query: trestle
    first_party_hit: false
    note: >-
      pypi.org/project/trestle exists but is unrelated to this provider;
      reso-api returns 404.
  - registry: rubygems
    query: trestle
    first_party_hit: false
    note: The trestle gem is an unrelated Rails admin framework.
  - registry: packagist
    query: trestle
    first_party_hit: false
    note: Top hit nuradius/trestle is an unrelated PHP middleware library.
  - {registry: maven-central, query: trestle, first_party_hit: false}
  - {registry: nuget, query: trestle, first_party_hit: false}

homonym_warning: >-
  "Trestle" is a heavily overloaded package name. Trestle IQ (trestleiq.com),
  a phone/identity verification API, owns most of the npm and integration-
  platform surface that carries the name. Do not treat those packages as
  clients for this provider.