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DubovskiyIM merged 2 commits into from
May 10, 2026
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docs: единый What is Fold pitch (источник истины) #17

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docs: единый pitch What is Fold (источник истины для landing и quicks…
IgnatDubovskiy May 10, 2026
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docs(what-is-fold): fix code review (path-стабильность, упрощение jar…
IgnatDubovskiy May 10, 2026
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30 changes: 30 additions & 0 deletions docs/what-is-fold.md
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# What is Fold?

**Fold** — agent governance runtime. MCP-сервер (stdio adapter, slot-in для Claude Desktop / Cursor / Zed) перед runtime-сервисом, который sibling к реальному backend'у — не middleware и не proxy.

## Решает 4 задокументированные боли AI-агентов

1. **Destructive actions без permission scope** (PocketOS, Replit incidents) → `role.base` + `role.scope` filtering
2. **Generic 500 без machine-readable reason** (90.8% retry waste) → structured rejections с invariant-violation reasons
3. **Over-broad capability tokens** (Supabase service_role, GitHub MCP over-broad PAT scope) → preapproval guards с предикатами вроде `maxAmount` (cap на сумму), `dailySum` (rate-limit) или `csvInclude` (whitelist по списку)
4. **Нет point of no return** (Railway blog) → `__irr.point` irreversibility primitive: past confirmed effect с `point: high` блокирует `α:remove` на той же сущности; forward-correction через `α:replace` остаётся возможной

## Что входит в Fold

| Часть | Репо | npm |
|---|---|---|
| MCP server | `idf-mcp/` | `@intent-driven/mcp-server` |
| Standalone runtime | `idf-sdk/packages/runtime-local/` | `@intent-driven/runtime-local` |
| CLI (`idf serve`, `idf approvals`, `idf approve`) | `idf-sdk/packages/cli/` | `@intent-driven/cli` |
| Docker quickstart | `fold-runtime-quickstart/` | — |
| Landing | `fold-landing/` | fold.intent-design.tech |

## Что не Fold

- **Не Studio** — Fold не делает UI, не имеет multi-tenant control plane. Studio — отдельный продукт (см. host-репо `idf/`, файл `docs/products.md` после Phase 0 merge).
- **Не сам формат IDF** — Fold потребляет IDF-онтологию, но спецификация формата живёт в `idf-spec/`.
- **Не middleware** — Fold sibling к backend'у через MCP, не proxy перед API.

## Time to first `approve_pending`

Цель: ≤ 15 минут от `npm install` до первого `approve_pending` в Claude Desktop на NestJS+TypeORM+PG проекте. Quickstart-доc — `~/WebstormProjects/fold-runtime-quickstart/README.md`.
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