postcache MCP

An official MCP server that provides AI agents with tools to upload, check, retrieve, and delete media files for Instagram, Threads, and Facebook. It handles platform-specific format validation, automatic conversion, and short-term public URL hosting, allowing agents to post media without manual intervention or complex storage management.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-18Operated by EndorphinIT a.s.

MCP endpoint (Streamable HTTP)

https://postcache.dev/mcp

Vendor documentation

What you can do with it

Upload media files for social media platforms
Check media against platform format rules
Retrieve media status and URLs
Delete media files after posting

Tools advertised by the last live check:

upload_media
check_media
get_media
delete_media

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http postcache-mcp https://postcache.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add postcache-mcp --url https://postcache.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable postcache-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "postcache-mcp": {
      "url": "https://postcache.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "postcache-mcp": {
      "type": "streamableHttp",
      "url": "https://postcache.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start postcache-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "postcache-mcp": {
      "type": "http",
      "url": "https://postcache.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http postcache-mcp https://postcache.dev/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "postcache-mcp": {
      "url": "https://postcache.dev/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "postcache-mcp": {
      "serverUrl": "https://postcache.dev/mcp"
    }
  }
}

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