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How to explain what moved a chart with sourced annotations with Openchart

Select a price range and have your agent research the move, with source-linked notes pinned to the bars.

  • Money
  • Beginner
  • 30 minutes
  • From the README
  • Any agent

Credentials. The agent runs on your own provider account, so keep those login details private and do not paste them into chats or screenshots.

Who it is forA trader or analyst who sees a sharp move on a chart and needs to know what drove it before deciding anything.

The problemFinding the news and context behind a price move by hand across many sources is slow.

The outcomeAnnotations pinned to the relevant bars, each linked to the source the agent used.

What you need first

  • macOS on Apple Silicon for the packaged Desktop app, or Node.js 24, npm 11.11.1, Bun 1.4.2, and Just for a source build
  • An account with your agent provider (Claude, Codex, or Gemini models) to power the agent features
  • Optional: OpenChart Cloud market data, which is priced separately
  • Git, for cloning the repository in the source build path

Steps

  1. Download and open Desktop, following the install steps in the README.
  2. Connect your agent provider account (Claude, Codex, or Gemini models) so the agent can run.
  3. Open a chart and select the range of bars where the move happened.
  4. Ask the agent to explain the move, then review the source-linked annotations pinned to the bars.

Prompt for your agent

In the OpenChart app, select the bars from <start date> to <end date> on the <symbol> chart and ask the agent what moved the price. Expected output: annotations pinned to those bars, each with a source link. Verify that each annotation links to a source you can open before you rely on it.

Caveat. The README does not say how the agent chooses its sources, so check each linked source yourself before trading on the explanation.

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