From raw evidence to a working prototype, in one connected workflow

Product teams already write everything down: sales call notes, support tickets, customer-research transcripts, competitor scans, decision memos, retro outcomes. Harvest asks for nothing new — just a single canonical place for it all to land. Winnow's raw/ folder is that place. Sub-folders (sales/, customer_success/, support/, research/, market/, competitors/, systems/, decisions/, delivery/) keep evidence routed by source type so the synthesis prompts can be tuned per category.

Four input paths converge on the same destination:

• Editor or filesystem — drop a markdown file into raw/sales/ from your editor of choice.
• Web UI — a Create-evidence form with a WYSIWYG markdown tab and a PDF/DOCX upload tab.
• Webhook API — bearer-gated POST /api/raw/{subdir} for n8n, Zapier, Make, or custom scrapers. Optional auto_ingest triggers the synthesis pipeline once the burst settles.
• Cloud sync — symlink raw/ into a Dropbox, iCloud, Google Drive or OneDrive folder; drop files from any device.

Files are immutable once they're in. The original binary is preserved untouched; the LLM reads an extracted-text view at synthesis time.

The synthesis pipeline is the same shape on every run: discover unprocessed sources, classify them by content hash (new / revision / unchanged), pick the wiki pages most relevant to each source via a cheap selector model, then call a smarter synthesis model with the foundations, the selected pages, and the raw evidence. The model returns a structured edit plan. The runtime stages every change to a temp directory, validates it, and either applies atomically or rolls back — there's no half-applied wiki.

Six commands cover the full lifecycle:

• winnow ingest — general-purpose evidence (sales / support / research / market / competitors / systems).
• winnow decide — documented decisions.
• winnow deliver — delivery outcomes.
• winnow discover — scans the wiki for tension and proposes opportunities.
• winnow recommend — generates recommendations from validated opportunities.
• winnow reconcile — two-step propose/apply for baseline foundation updates.

Every command supports --dry-run so you can preview the plan before anything writes. Reconcile is two-step by design: the propose step writes a sidecar; the apply step is always explicit human action.

A recommendation that lives in the wiki carries everything an AI builder needs to start prototyping: a clear opportunity, cited evidence, expected impact, risks, alignment with strategy. Harvest delivers that bundle into the tools where prototypes actually get made through three integration surfaces:

• Export to prompt — One click on a recommendation page assembles a paste-ready markdown brief: recommendation + parent opportunity + cited evidence + five foundations as non-negotiable constraints. Pure templating, no LLM call. Paste into Claude Code, Cursor, Lovable, v0, Replit — anything that takes markdown context.
• MCP server — AI builders pull context on demand instead of relying on copy-paste. Read-only by design. Two transports: stdio for local AI-builder subprocesses, HTTP (bearer-gated) for hosted use. Seven tools: list and fetch recommendations and opportunities, fetch any wiki page, fetch the foundations bundle, fetch the recent-changes log.
• OpenAI-compatible gateway — winnow gateway boots a chat-completions service at port 11434 (Ollama's default port, for client auto-discovery). Open WebUI, Continue.dev, LibreChat, LobeChat, Cursor's OpenAI-compatible mode — any client that speaks the OpenAI API can chat with the wiki as if it were a model.

The wiki is read-only over MCP and the gateway. Adding evidence still flows through the four input paths above, so the audit trail stays clean and the LLM remains the wiki's only editor.

Self-host. pip install winnow, or run the Docker image (~520 MB, single /data volume, backend + frontend in one container). Bring your own LLM key (Anthropic or OpenRouter). Runs on your laptop, your server, or behind a reverse proxy with trusted-header auth (Caddy, Nginx, Tailscale Funnel, Cloudflare Access).

Hosted at usewin.now. Same image, hosted for you. Each workspace gets a subdomain that reads as a sentence — cocacola.usewin.now, "Coca Cola use Winnow." Bring your own LLM key (no token markup, no rate-limit accounting). Daily volume snapshots, 30-day export window on cancellation. Open in waves — join the waitlist for early access.