chartlink for agents

chartlink makes charts and tables with live-updating embed links. An agent drafts a chart from one message, looks at the preview, publishes it, and hands back an embed that updates when the numbers do. No accounts: the API key is the workspace.

This repo is how agents connect.

Claude Code plugin

/plugin marketplace add oscarleoo/chartlink-agents
/plugin install chartlink@chartlink

The plugin adds the chartlink MCP server and a skill that teaches the create → preview → publish loop. Ask Claude to "set up chartlink" and it gets its own key (POST /api/signup, no account) and tells you where to paste it.

Related MCP server: Charta MCP

Any MCP client (HTTP)

URL:    https://chartlink.app/mcp
Header: Authorization: Bearer viz_...

Get a key with curl -X POST https://chartlink.app/api/signup. The key is shown once.

Clients that only speak stdio

npx chartlink-mcp

with CHARTLINK_API_KEY=viz_... in the environment. It bridges stdio to the HTTP server above; nothing runs locally but the bridge. Source in packages/chartlink-mcp.

Plain REST

Everything is documented for agents at https://chartlink.app/llms.txt and as OpenAPI at https://chartlink.app/api/openapi.json.

Listing kit

listing/ holds the text and image used on every directory chartlink is listed in.