generated: '2026-08-13'
method: searched
source: >-
  registry.npmjs.org, pypi.org, crandb.r-pkg.org, rubygems.org, crates.io,
  packagist.org, github.com/substackinc
official_package_count: 0
note: >-
  Substack, Inc. publishes NO first-party client library in any registry. The
  github.com/substackinc organization contains only forks and internal infrastructure
  (connect-session-knex, favicons, prosemirror-menu, terraform-aws-ecs-service,
  whisperX, snowflake-promise, node-detective-cjs, po2json, mcp-server-datadog) —
  nothing that wraps a Substack API. No SDKs pointer is emitted for this provider,
  because there is no official SDK to point at.
  NAMESPACE TRAP: the npm user "substack" is James Halliday, the Node.js author behind
  browserify, minimist, through and hundreds of other packages. Those packages have
  nothing to do with Substack, Inc. and none of them are recorded here. Any automated
  npm-by-author harvest of "substack" will misattribute a large slice of the Node
  ecosystem to this company.
packages: []
community_packages_note: >-
  Recorded for integrator awareness only. Every entry below is third-party, wraps
  Substack's undocumented web-application endpoints rather than the Developer API,
  and is unaffiliated with Substack, Inc. Versions and dates read from each registry's
  metadata endpoint on 2026-08-13.
community_packages:
  - language: typescript
    registry: npm
    name: substack-api
    url: https://www.npmjs.com/package/substack-api
    install: npm install substack-api
    version: 4.0.2
    published: '2026-06-20'
    repo: https://github.com/jakub-k-slys/substack-api
    official: false
  - language: typescript
    registry: npm
    name: substack-ts
    url: https://www.npmjs.com/package/substack-ts
    install: npm install substack-ts
    version: 0.1.22
    published: '2026-03-27'
    repo: https://github.com/ma2za/substack-ts
    official: false
  - language: typescript
    registry: npm
    name: substack-skill
    url: https://www.npmjs.com/package/substack-skill
    install: npm install substack-skill
    version: 0.1.5
    published: '2026-03-13'
    repo: https://github.com/Gajesh2007/substack-cli
    official: false
    note: TypeScript SDK + CLI aimed at AI agents
  - language: typescript
    registry: npm
    name: n8n-nodes-substack
    url: https://www.npmjs.com/package/n8n-nodes-substack
    install: npm install n8n-nodes-substack
    version: 3.0.2
    published: '2026-06-20'
    repo: https://github.com/jakub-k-slys/n8n-nodes-substack
    official: false
  - language: typescript
    registry: npm
    name: '@danielsimonjr/substack-mcp'
    url: https://www.npmjs.com/package/@danielsimonjr/substack-mcp
    install: npx -y @danielsimonjr/substack-mcp
    version: 1.0.1
    published: '2026-08-03'
    official: false
    note: >-
      Third-party MCP server. NOT Substack's official server — the official one is the
      remote endpoint https://mcp.substack.com/api/v1/mcp (see mcp/substack-mcp.yml).
  - language: python
    registry: pypi
    name: substack-api
    url: https://pypi.org/project/substack-api/
    install: pip install substack-api
    version: 1.3.0
    published: '2026-05-29'
    repo: https://github.com/nhagar/substack_api
    official: false
    note: self-described as "Unofficial wrapper for the Substack API"
  - language: r
    registry: cran
    name: substackR
    url: https://cran.r-project.org/package/=substackR
    install: install.packages("substackR")
    version: 0.1.15
    published: '2025-06-17'
    official: false
registries_checked:
  - registry: npm
    official_hits: 0
  - registry: pypi
    official_hits: 0
    note: the pypi project "substack" (0.0.1, 2020-08-07) is an unrelated website plugin
  - registry: cran
    official_hits: 0
  - registry: rubygems
    official_hits: 0
    note: 'gem "substack" 404'
  - registry: crates.io
    official_hits: 0
    note: crate "substack" 403/absent
  - registry: packagist
    official_hits: 0
    note: only unrelated vendor "substacks"
  - registry: maven-central
    official_hits: 0
  - registry: nuget
    official_hits: 0
  - registry: pkg.go.dev
    official_hits: 0