generated: '2026-08-14'
method: searched
source: >-
  https://github.com/fullcontact plus the public registry metadata endpoints
  (proxy.golang.org, pypi.org, search.maven.org, registry.npmjs.org,
  rubygems.org, api.nuget.org). Every version/published pair below was read
  from the registry, not from a README.
description: >-
  First-party FullContact client libraries for the V3 API. The currency picture
  is the finding: the newest official SDK release is the Go client at
  v2.1.0 (2024-02-09); Python and Java both last shipped 4.0.0 in July 2022,
  the npm package last shipped in 2019, and the Ruby gem in 2017. FullContact
  shipped a hosted MCP server in 2026 while its REST SDKs have gone two to nine
  years without a release.

packages:
  - language: go
    registry: go
    name: github.com/fullcontact/fullcontact-go
    url: https://pkg.go.dev/github.com/fullcontact/fullcontact-go
    source: https://github.com/fullcontact/fullcontact-go
    install: go get github.com/fullcontact/fullcontact-go
    official: true
    version: v2.1.0+incompatible
    published: '2024-02-09'
    note: >-
      "Official Go Client for FullContact V3 APIs". Version and date read from
      https://proxy.golang.org/github.com/fullcontact/fullcontact-go/@latest.

  - language: python
    registry: pypi
    name: python-fullcontact
    url: https://pypi.org/project/python-fullcontact/
    source: https://github.com/fullcontact/fullcontact-python-client
    install: pip install python-fullcontact
    official: true
    version: 4.0.0
    published: '2022-07-01'
    note: >-
      "Client library for FullContact V3 Enrich and Resolve APIs". Version and
      date from https://pypi.org/pypi/python-fullcontact/json.

  - language: java
    registry: maven
    name: com.fullcontact.client:java11
    url: https://central.sonatype.com/artifact/com.fullcontact.client/java11
    source: https://github.com/fullcontact/fullcontact-java-client
    install: "implementation 'com.fullcontact.client:java11:4.0.0'"
    official: true
    version: 4.0.0
    published: '2022-07-04'
    note: Java 11 build. Coordinates from the repo README; date from Maven Central search.

  - language: java
    registry: maven
    name: com.fullcontact.client:java8
    url: https://central.sonatype.com/artifact/com.fullcontact.client/java8
    source: https://github.com/fullcontact/fullcontact-java-client
    install: "implementation 'com.fullcontact.client:java8:4.0.0'"
    official: true
    version: 4.0.0
    published: '2022-07-04'
    note: Java 8 build of the same client.

  - language: javascript
    registry: npm
    name: fullcontact-node-sdk
    url: https://www.npmjs.com/package/fullcontact-node-sdk
    source: https://github.com/fullcontact/fullcontact-node-sdk
    install: npm install fullcontact-node-sdk
    official: true
    version: 1.1.2
    published: '2019-11-18'
    note: >-
      "Node.js SDK for FullContact Enrich APIs". repository field on the npm
      record points at github.com/fullcontact/fullcontact-node-sdk, confirming
      first-party. Version and date from https://registry.npmjs.org.

  - language: ruby
    registry: rubygems
    name: fullcontact
    url: https://rubygems.org/gems/fullcontact
    source: https://github.com/fullcontact/fullcontact-api-ruby
    install: gem install fullcontact
    official: true
    deprecated: true
    version: 0.18.0
    published: '2017-07-14'
    note: >-
      Authored by "FullContact, Inc.". The backing repository
      fullcontact/fullcontact-api-ruby is ARCHIVED on GitHub and the gem
      predates the V3 API.

  - language: dotnet
    registry: nuget
    name: FullContact.Contacts.API
    url: https://www.nuget.org/packages/FullContact.Contacts.API
    source: https://github.com/fullcontact/contacts-api-dotnet
    install: dotnet add package FullContact.Contacts.API
    official: false
    version: 1.0.3
    published: '2017-12-14'
    note: >-
      Listed for completeness, NOT counted as an official V3 SDK. It targets
      the legacy Contacts API (Contacts+), the NuGet package is owned by an
      individual account rather than FullContact, and the backing GitHub
      repository is archived.

archived_or_superseded:
  - name: fullcontact/fullcontact4j
    url: https://github.com/fullcontact/fullcontact4j
    note: Explicitly marked "[DEPRECATED] A Java client for the FullContact API"; superseded by com.fullcontact.client.
  - name: fullcontact/fullcontact
    url: https://github.com/fullcontact/fullcontact
    note: Archived "FullContact API bindings for Node.js"; superseded by fullcontact-node-sdk.
  - name: fullcontact/full.contacts-api-client
    url: https://github.com/fullcontact/full.contacts-api-client
    note: Archived Clojure SDK for the legacy Contacts API.

summary:
  official_sdk_count: 6
  languages: [go, python, java, javascript, ruby]
  newest_official_release: '2024-02-09'
  oldest_official_release: '2017-07-14'