pcode: an MIT-licensed terminal coding agent built on Pydantic AI, free without paid tier
Equivalent-Task8081 · reddit · 2026-10-09
A Reddit user released pcode, an open-source terminal coding agent built on Pydantic AI under the MIT license, fully functional without any paid tier — you supply model access via API keys or an existing Claude/ChatGPT subscription.
Key details:
- Combines Pydantic AI's Harness coder with a terminal UI and session management; Python extension files add tools, slash commands, guardrails, and sub-agents
- Native terminal scrollback: show/hide completed commands, output, and diffs without rerunning, while normal scrolling, search, and copy keep working
- Long-running commands become background jobs that wake the agent on completion instead of blocking the conversation
- Conversations can be rewound and branched; parallel sessions can use separate git worktrees for isolation
- Customizable keybindings, Vim editing, and a diff popup
The author warns it can edit files and run shell commands with your permissions and no approval prompt, and frames this as an implementation share, not a benchmark claim.
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