onPanda

About

onPanda is an interactive tool for visualizing and editing LLM output at the token level: a user hovers over a token, picks an alternative or edits it freely, and continues generation from that branch, with edits recorded in a tree that covers prompts, reasoning steps and tool calls. It can connect to coding harnesses like Claude Code, Codex and OpenCode, or run its own in-browser agent, letting users compare their tool sets and system prompts. The name stands for on-Policy Alignment Data Annotator, reflecting its use for labeling on-policy training data with token-level corrections.