generated: '2026-08-14' method: searched source: >- registry.npmjs.org, pypi.org, rubygems.org metadata endpoints + the Mattermark GitHub organisation (https://github.com/Mattermark) summary: >- Mattermark publishes NO first-party client SDK in any package registry. Its entire GitHub organisation contains a single public repository, and that repository holds the OpenAPI/Swagger definition rather than a client library. The three packages below are community wrappers by third parties; all are official: false. Every one of them was last published between 2014 and 2017 — before the 2019 relaunch — so no maintained client library exists for this API in any language. official_sdk_count: 0 first_party_repositories: - name: mattermark-openapi url: https://github.com/Mattermark/mattermark-openapi description: Swagger (OpenAPI v2.0) definition of the Mattermark REST API. kind: specification is_client_library: false last_pushed: '2018-05-24' captured_to: openapi/_original/mattermark-swagger.yaml packages: - language: javascript registry: npm name: mattermark url: https://www.npmjs.com/package/mattermark install: npm install mattermark official: false version: 0.0.2 published: '2015-12-13' author: Chris Dzoba repository: https://github.com/dzoba/mattermark description: A node module that wraps the Mattermark API. note: >- Community wrapper. Last release 2015-12-13, more than three years before Mattermark's 2019 relaunch; unmaintained. - language: python registry: pypi name: mattermark url: https://pypi.org/project/mattermark/ install: pip install mattermark official: false version: 0.4.1 published: '2017-02-16' author: Carl Cortright repository: https://github.com/FoundryGroup/Mattermark description: Wrapper for the Mattermark API. note: >- Community wrapper published under the Foundry Group organisation. Last release 2017-02-16; unmaintained. - language: ruby registry: rubygems name: mattermark url: https://rubygems.org/gems/mattermark install: gem install mattermark official: false version: 0.1.1 published: '2014-09-02' author: Andrew Thorp repository: https://github.com/andrewpthorp/mattermark description: Ruby client for the Mattermark API. note: Community wrapper. Last release 2014-09-02; unmaintained. registries_checked: - {registry: npm, endpoint: 'https://registry.npmjs.org/mattermark', result: third-party package found} - {registry: pypi, endpoint: 'https://pypi.org/pypi/mattermark/json', result: third-party package found} - {registry: rubygems, endpoint: 'https://rubygems.org/api/v1/gems/mattermark.json', result: third-party package found} - {registry: github, endpoint: 'https://api.github.com/orgs/mattermark/repos', result: '1 public repo, specification only, no client library'} decay_signal: newest_client_release: '2017-02-16' api_relaunch: '2019-02-14' finding: >- Every published client library predates the relaunch of the API it wraps. No package in any registry has been released in the nine years to 2026.