# API, MCP and plugins Choose the connection type before you package anything. - **REST API:** Your app sends HTTP requests to https://leadsagent.io/api/v1. Use it when your code needs predictable task, results, export and account endpoints. Read the [OpenAPI schema](https://leadsagent.io/documentation/openapi.json). - **MCP server:** An assistant connects to https://leadsagent.io/mcp/v1 and calls named tools. MCP is a protocol and transport, not an installable package. See the [MCP transport specification](https://modelcontextprotocol.io/specification/2025-06-18/basic/transports) and [MCP authorization specification](https://modelcontextprotocol.io/specification/2025-06-18/basic/authorization). - **Plugin:** An app-specific package can install instructions, skills or MCP configuration. Each app defines its own manifest and review process. Do not treat a direct MCP connection as a published plugin. For ChatGPT and Codex packages, see [OpenAI Agent Plugins](https://developers.openai.com/plugins/build/plugins). Direct custom MCP server setup is documented separately in [OpenAI's custom MCP guide](https://developers.openai.com/api/docs/guides/custom-mcp-server). OpenAI's public submission flow has separate [submission requirements](https://developers.openai.com/plugins/deploy/submission); it does not provide an arbitrary API-key header field, so an X-API-Key client setup alone is not a public-directory plugin. Claude also separates remote [connector setup](https://claude.com/docs/connectors/building/submission) from a [plugin package](https://claude.com/docs/plugins/quickstart). Cursor supports its own [Agent Plugin format](https://cursor.com/docs/reference/plugins). LeadsAgent's direct connection instructions are not a claim that a LeadsAgent plugin package is published. ## LeadsAgent package downloads Publisher: LeadsAgent Team. Package version: 1.0.1. These are authoring and installation artifacts, not proof of publication. - [ChatGPT and Codex ZIP](https://leadsagent.io/plugins/openai.zip) · [Development server ZIP](https://leadsagent.io/plugins/development/openai.zip): Portable plugin with logo, composer icon, listing links and team publisher. Public publisher display also requires the verified organization identity. - [Codex compatibility ZIP](https://leadsagent.io/plugins/codex.zip) · [Development server ZIP](https://leadsagent.io/plugins/development/codex.zip): For clients expecting .codex-plugin/plugin.json. Current clients can use the portable OpenAI package. - [Claude ZIP](https://leadsagent.io/plugins/claude.zip) · [Development server ZIP](https://leadsagent.io/plugins/development/claude.zip): Claude plugin manifest, directory icon and policy links, plus .mcp.json. The Claude chat connector has a separate registration. - [Antigravity ZIP](https://leadsagent.io/plugins/antigravity.zip) · [Development server ZIP](https://leadsagent.io/plugins/development/antigravity.zip): Strict plugin manifest and mcp_config.json with serverUrl. Its documented manifest has no logo or publisher fields. - [Gemini CLI enterprise / paid API ZIP](https://leadsagent.io/plugins/gemini-cli.zip) · [Development server ZIP](https://leadsagent.io/plugins/development/gemini-cli.zip): Compatibility extension with gemini-extension.json and httpUrl. Consumer users should choose Antigravity. Gemini Apps use the MCP URL directly. - [Cursor ZIP](https://leadsagent.io/plugins/cursor.zip) · [Development server ZIP](https://leadsagent.io/plugins/development/cursor.zip): Cursor manifest with team author, homepage and bundled logo. Public listing requires a dedicated public plugin repository. - [VS Code Agent Plugins ZIP](https://leadsagent.io/plugins/vscode.zip) · [Development server ZIP](https://leadsagent.io/plugins/development/vscode.zip): Portable Agent Plugins manifest and MCP configuration. A branded VS Code Marketplace extension requires a separate extension package. Standard packages use the configured documentation origin, or leadsagent.io by default. Development packages connect to dev.leadsagent.io. Verify deployment of the selected endpoint before installation. ## OAuth configuration files - [Claude](https://leadsagent.io/plugins/configs/claude.mcp.json) - [Cursor](https://leadsagent.io/plugins/configs/cursor.mcp.json) - [VS Code / Copilot workspace](https://leadsagent.io/plugins/configs/vscode.mcp.json) - [VS Code editor compatibility](https://leadsagent.io/plugins/configs/vscode-legacy.mcp.json) - [Antigravity](https://leadsagent.io/plugins/configs/antigravity.mcp_config.json) - [Gemini CLI enterprise](https://leadsagent.io/plugins/configs/gemini-cli.settings.json) - [OpenCode V1](https://leadsagent.io/plugins/configs/opencode-v1.json) - [OpenCode V2](https://leadsagent.io/plugins/configs/opencode-v2.json) - [Codex TOML](https://leadsagent.io/plugins/configs/codex.config.toml) - [Portable MCP](https://leadsagent.io/plugins/configs/portable.mcp.json) Registration worksheet: https://leadsagent.io/plugins/registration.json Development files: https://leadsagent.io/plugins/development/index.json Brand logo: https://leadsagent.io/leadsagent-logo-512.png OpenAI listing publisher display depends on the selected verified organization identity. A manifest cannot override a personal verified identity. Claude plugin and connector listings have separate registration. MCP server icons are optional protocol identity and do not guarantee catalog branding. Gemini Apps use the MCP URL directly and document no user-authored branding manifest. Current custom-app eligibility is US personal accounts, age 18+, English, Keep Activity enabled. Antigravity and Gemini CLI do not document local manifest logo/publisher fields. n8n uses an MCP Client Tool; a branded community node is a separate npm product. [All documentation](https://leadsagent.io/documentation/quickstart) [OpenAPI](https://leadsagent.io/documentation/openapi.json)