Hatcut Chat mode — public talking-head editor + MCP

What this is
- A free, no-login editor at https://hatcut.com/chat
- Cut silences, keep main segments, add captions, set a thumbnail, export
- In-editor chat (Workers AI) can only keep/cut lines, set captions, and export
- Captioned VPS export from chat requires an explicit confirm
- Chat threads use a shared reference stored in D1 and browser localStorage
- The transcript is the timeline. There are no tracks, items, or motion graphics.

Data model
- session (cookie or MCP sessionToken) → project → jobs → segments (kept=1|0)
- 3 transcribe credits + 3 captioned VPS renders per session
- Silence-only browser (WASM) export is free
- Projects expire after 3 days. Source ≤ 5 min. Export ≤ 120s.

MCP
- Streamable HTTP JSON-RPC: https://api.hatcut.com/mcp
- Tools: get_product_info, create_project, import_media, read_project, transcribe, set_segments, set_captions, set_thumbnail, set_heading, analyze_creative, apply_creative, suggest_titles, update_descriptions, submit_export, track_export, get_editor_url
- get_product_info is read-only (no session): language capabilities, credit-pack summary, and deep links with utm_source/utm_medium/utm_campaign (es_latam|de|fr|zh|15day_bet|india; es_mx remaps to es_latam) and optional utm_content=capcut_alt
- create_project returns sessionToken. Send it as sessionToken on later tools (the Worker also accepts X-Tool-Session).

Host guides (read and execute)
- Claude Code: https://hatcut.com/chat/claude
- ChatGPT / Codex: https://hatcut.com/chat/chatgpt
- Humans: https://hatcut.com/chat/agents