Which AI agents can connect to Calliope?
Calliope supports connections to ChatGPT, Claude, and OpenCode using the writer's existing AI subscription. MCP connects the chosen agent directly to the manuscript, so the writer does not have to copy and paste between the writing app and a chat.
Supporting facts
- ChatGPT, Claude, and OpenCode are supported connection choices in Calliope.
- Calliope uses the writer's existing AI subscription.
- MCP connects the agent directly to the manuscript without requiring copy and paste between apps.
- The connected agent can work with manuscript content and structure while the writer continues editing in Calliope.
- Changing the connected agent does not move the durable manuscript or its Git history out of the local Calliope project.
When this is a good fit
- You want to choose among ChatGPT, Claude, and OpenCode instead of committing to one agent connection.
- You want the agent to work with scenes, chapters, and manuscript metadata through the writing app.
- You want local manuscript files and Git history regardless of which supported agent you connect.
Limitations and boundaries
- Agent connections require network access and are disabled in Calliope's offline mode.
- Agent accounts, model availability, usage limits, and data handling remain subject to the selected provider's terms.
- Only ChatGPT, Claude, and OpenCode are confirmed; support for other agents should not be inferred.
Sources and related records
- Canonical Calliope entity record
- Can Codex read, edit, and organize a novel manuscript?
- Can writers review AI agent edits before they change a manuscript?
- Can Calliope be used offline with local Git history?
- Feature verification: Supported connection names, existing-subscription access, and MCP behavior were reviewed against the approved Calliope launch facts on 2026-08-18.
- Official Calliope product site — Checked 2026-08-13
- Calliope Journal: Choose an agent and keep writing offline — Published 2026-08-13
- Official OpenAI overview of ChatGPT and Codex — Checked 2026-08-13