Use it in

Charts in AI agent replies.

An agent can write a chart URL like any other text. With the MCP server, Claude, ChatGPT and Cursor do it for you.

Start freeSee the examples
How did uptime look this week?
AssistantSaturday dipped to 99.7%. Every other day was 99.95% or better. Line chart: uptime over seven days, dipping to 99.7% on Saturday
Illustration of a reply. The chart is real; the conversation is an example.

Set it up.

  1. Connect the MCP server

    Add https://app.renderchart.com/mcp to your assistant. Starter and Pro.

  2. Ask for a chart

    Give it the numbers, or point it at data it can already read.

  3. Reuse the URL

    The reply's chart is an ordinary chart URL you can paste anywhere.

![Status page uptime](https://c.renderchart.com/?key=rc_pub_live_7Hq2mX9pLk4vN8sT1wEa&type=line&x=Mon,Tue,Wed,Thu,Fri,Sat,Sun&y=99.98,100,99.95,99.99,100,99.7,100&min=99.5&max=100&ylabel=Uptime%20%25&title=Uptime,%20last%207%20days&w=400&h=220)

Worth knowing.

Without MCP
Any agent that can write Markdown can output a chart image. Give it the URL pattern and your key.
Limits
Agents can repeat themselves. Repeated charts come from cache and cost nothing.
Start freeRead the URL spec