How it works
Your agent gets 7 tools. Connecting takes three steps - nothing to install:Authorize once
Point your client at the Sydium MCP endpoint and click Authorize in the browser. No developer app to register, no API keys to paste - Sydium registers your client automatically, and you approve exactly which scopes it gets.
Your agent discovers the tools
On connect, the agent reads the 7 Sydium tools and their schemas - so it knows precisely what it can do and how to call each one.
Available tools
| Tool | Scope | What it does |
|---|---|---|
list_accounts | accounts:read | List your connected social accounts |
get_platform_capabilities | capabilities:read | Per-platform posting limits, formats, and post types |
generate_caption | generate:write | Draft a caption in your brand voice |
publish_post | posts:write | Publish now or schedule to one or more platforms |
get_post_status | posts:read | Per-target status of a publish or schedule operation |
cancel_post | posts:write | Cancel a still-scheduled operation |
get_analytics | analytics:read | Account analytics time-series |
Tools reference
Full input schema and behavior for every tool.
Authentication
Your client connects over OAuth: it sends you to a Sydium consent screen, you pick Authorize, and the agent gets a scoped token. The agent never sees a password, and it can never do more than the scopes you grant - or more than your own team role allows. The Client setup guide has the per-client steps and a walkthrough of the consent screen.Connect your client
Client setup
Step-by-step for Claude Desktop, ChatGPT, and Cursor.
Quick example
Once connected, just talk to your agent:list_accounts, generate_caption, and publish_post (with scheduleAt), then reports back. You keep the final say.
FAQ
Do I need an API key?
Do I need an API key?
No. MCP uses one-click browser OAuth with dynamic client registration. API keys are only for the REST API and CLI.
Which clients are supported?
Which clients are supported?
Any MCP-compatible client - Claude (desktop and web), ChatGPT, Cursor, and others. See Client setup.
Can the agent post videos and images?
Can the agent post videos and images?
The agent works with text and captions out of the box. Attaching media through the agent is limited today - media is uploaded and managed in the Sydium app, since agents cannot stream binary uploads. Broader agent-driven media support is planned.
What can it access?
What can it access?
Only the scopes you approve on the consent screen, and never more than your own team role allows.