handymanServices & Tools
extensionCommon Features
extensionPlugin Manifests
Marketplaces and runtimes use declarative manifests (manifest.json for Chrome and VS Code, plugin.xml for JetBrains, app manifests for Slack and Atlassian Connect) to describe identity, permissions, entry points, and capabilities of a plugin.
extensionMarketplace Listing and Discovery APIs
Public APIs and search endpoints expose listings, categories, ratings, and download counts so developers and users can discover plugins across VS Code Marketplace, Chrome Web Store, JetBrains Marketplace, Shopify App Store, and Atlassian Marketplace.
extensionExtension Points and Hooks
Host platforms expose well-defined extension points, events, and lifecycle hooks (Forge modules, Shopify Functions, Auth0 Actions, Kong plugin phases, WordPress hooks) that plugins implement to integrate with the host.
extensionInstall, Update, and Entitlement Flows
Marketplaces standardize installation, OAuth grant, license check, and entitlement validation flows for individual users, organizations, and tenants, including paid plugin billing and trials.
extensionSandboxing and Permissions
Plugin runtimes enforce permission scopes, sandboxed execution (Atlassian Forge, Chrome MV3 service workers, Slack Bolt scopes, Salesforce managed packages) and review processes to protect host platforms and end users.
extensionAI Tooling and Agent Plugins
AI platforms expose plugin and tool surfaces (ChatGPT GPTs and plugins, Open WebUI Functions, Claude Code plugins, OpenAI tools) that let third-party developers extend LLM behavior with custom actions, retrieval, and integrations.
extensionAPI Gateway Plugin Frameworks
API gateways such as Kong, Tyk, and Gravitee define plugin frameworks where authentication, transformation, rate limiting, and observability behavior is implemented and distributed as installable plugins.
task_altUse Cases
task_altEditor and IDE Extensibility
Developers ship language support, linters, debuggers, and AI assistants as plugins through VS Code Marketplace and JetBrains Marketplace, reaching millions of editor installations through manifest-driven distribution.
task_altSaaS Platform App Marketplaces
ISVs build and list apps on Salesforce AppExchange, Shopify App Store, Atlassian Marketplace, HubSpot Marketplace, and Slack App Directory to extend SaaS platforms and reach enterprise customers.
task_altBrowser Extension Distribution
Developers package and distribute browser extensions for content blocking, productivity, password management, and accessibility through Chrome Web Store, Firefox Add-ons, and Microsoft Edge Add-ons.
task_altAPI Gateway Customization
Platform teams extend Kong, Tyk, and Gravitee with custom plugins for authentication, request transformation, AI prompt firewalls, and policy enforcement, often shared through plugin hubs.
task_altCMS and Commerce Extensibility
WordPress plugin directory and Shopify App Store let merchants and publishers extend CMS and commerce platforms with payment processors, shipping integrations, page builders, and analytics.
task_altAI Agent Tooling
Builders publish ChatGPT GPTs and plugins, Open WebUI Functions, and Claude Code plugins to give AI agents domain-specific tools, retrieval sources, and connectors to external systems.
task_altIdentity and Access Extensions
Auth0 Actions, Extensions, and the Auth0 Marketplace let teams add custom rules, MFA providers, and SSO integrations to identity flows without forking the platform.
integration_instructionsIntegrations
integration_instructionsVS Code Marketplace
Microsoft's marketplace for Visual Studio Code and Visual Studio extensions, with a Gallery API for search, download, and metadata.
integration_instructionsJetBrains Marketplace
Official plugin and theme distribution platform for IntelliJ IDEA, PyCharm, WebStorm, and other JetBrains IDEs with a public plugins API.
integration_instructionsChrome Web Store
Google's distribution channel for Chrome and Edge browser extensions and themes, governed by Manifest V3 and the Chrome Web Store API.
integration_instructionsAtlassian Marketplace
Marketplace for apps that extend Jira, Confluence, and Bitbucket, including Atlassian Connect and Forge apps with a public Marketplace REST API.
integration_instructionsSalesforce AppExchange
Enterprise marketplace for managed packages and Lightning components extending Salesforce CRM, with package install APIs and security review.
integration_instructionsShopify App Store
Marketplace for apps extending Shopify Admin, Storefront, and Checkout via Shopify Apps, Functions, and Theme App Extensions.
integration_instructionsWordPress Plugin Directory
Open directory of free WordPress plugins powering a large share of the web, distributed through wordpress.org with a public plugins.org API.
integration_instructionsSlack App Directory
Directory of Slack apps and integrations built on the Slack platform, manifested through app config and the Apps API.
integration_instructionsMicrosoft AppSource
Microsoft's marketplace for business apps and Office 365 add-ins, Teams apps, and Power Platform connectors.
integration_instructionsGoogle Workspace Marketplace
Distribution platform for Google Workspace add-ons and Apps Script-based extensions to Gmail, Drive, Docs, Sheets, and Calendar.
integration_instructionsHubSpot Marketplace
Marketplace for HubSpot apps, themes, and templates extending the HubSpot CRM and CMS via OAuth apps and serverless functions.
integration_instructionsZapier App Directory
Directory of integrations and triggers/actions that Zapier exposes to its automation builder via the Zapier Platform CLI and Public APIs.
integration_instructionsKong Plugin Hub
Catalog of first-party and community plugins for Kong Gateway and Konnect, written in Lua, Go, or JavaScript and distributed through the Plugin Hub.
integration_instructionsOpen WebUI Functions
Pluggable functions, tools, and pipelines that extend the Open WebUI LLM chat interface with custom integrations and behavior.
articleLatest API Stories
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