---
path: /studio/isis/cost-optimization-engine
surface: studio
domain: isis
auth:
  signed-in + studio entitlement (segment not in `AAA_ONLY_STUDIO_ROUTES` —
  renders as-is)
source: apps/oshun/web/src/app/studio/isis/cost-optimization-engine/page.tsx
status: walked
last_walked:
  '2026-05-29 automated runtime walk (Playwright headless) — render, /v1 data
  (2xx), console/page-errors, expected content, screenshot verified; live
  screen-reader, touch, offline, and telemetry-delivery checks pending a manual
  AT pass. Evidence: WALKTHROUGH/results/runtime-sweep-2026-05-29.md; body
  re-derived 2026-06-03 from current source (lane-console architecture)'
---

# Isis Cost Optimization Engine

## Purpose

Admin §22 cost-governance lane console that runs prompt/context content through
the real token-budget optimization techniques (truncation, deduplication,
compression, …), reporting before/after token counts, the compression ratio, and
a content-preservation quality score. All reads and optimizations flow through
`/v1/admin/isis/cost-optimization`; it is admin-scoped and fails closed.

## Entry points

- Sibling quick-action from `/studio/isis/cost-tracking`
- Studio index (`/studio`)
- Direct URL / bookmark

## Layout regions

`page.tsx` mounts `<ShellLayout active="studio">` (no breadcrumb panel) and three
panels: the workspace, the Route Map, and sibling quick-actions.

- **Header**: shell header
- **Workspace panel** (`data-isis-cost-optimization-engine-workspace`):
  - `<h1>` (`WorkspaceHeading`) "Isis Cost Optimization Engine Workspace"
  - Summary paragraph (`data-optimization-summary`)
  - Optimize form (`data-optimization-form`)
  - Run list (`data-optimization-runs`), each `data-optimization-runcard=<runId>`;
    empty state `data-optimization-runs-empty`
- **Route Map panel** (`data-isis-cost-optimization-engine-route-map`): `<h2>Route
  Map</h2>` over `STUDIO_ISIS_COST_OPTIMIZATION_ENGINE_ROUTE_MAP` (5 entries)
- **Sibling quick-actions panel**: `/studio/isis/cost-tracking`, `/studio`

## States

- [ ] **Loading** — `data-optimization-loading`
- [ ] **Unauthorized** — 401/403 admin-scope fail-closed;
      `data-optimization-unauthorized`
- [ ] **Error** — non-OK or malformed response; `data-optimization-error`
- [ ] **Ready (form)** — response present; technique select populated from
      `response.techniques`; form + run list render
- [ ] **Result** — after an optimize POST, `data-optimization-result` shows
      `data-optimization-tokens` (before/after) and `data-optimization-preview`

## Interactions

### Optimize form (`data-optimization-form`)

- [ ] **Run id** (`data-optimization-runid`, text input)
- [ ] **Technique** (`data-optimization-technique`, `<select>` from
      `response.techniques`)
- [ ] **Max tokens** (`data-optimization-maxtokens`, number input, `min=1
      step=1`)
- [ ] **Content** (`data-optimization-content`, `<textarea>`)
- [ ] **Run** (`data-optimization-run`, button) — disabled until run id +
      technique + content present; `POST /v1/admin/isis/cost-optimization`

### Route Map

- [ ] **Route-map articles** ×5

### Sibling quick-actions

- [ ] **Open Isis Cost Tracking workspace** → `/studio/isis/cost-tracking`
- [ ] **Back to Studio workspace index** → `/studio`

## Data & contracts

- **Reads**: `GET /v1/admin/isis/cost-optimization` (techniques + prior runs)
- **Writes**: `POST /v1/admin/isis/cost-optimization` (optimize content; returns
  before/after token counts, compression ratio, quality score)
- **Realtime**: none
- **Caching**: client fetch on mount, `cache: 'no-store'`, `buildBffAuthHeaders()`
- **Auth/role check**: admin-scoped, fail-closed (401/403); route gated on
  signed-in + studio entitlement
- **Component sources**:
  - `apps/oshun/web/src/components/studio/StudioIsisCostOptimizationEngineWorkspace.tsx`
  - `apps/oshun/web/src/components/studio/StudioIsisCostOptimizationEngineRouteMap.ts`

## Cross-references

- Studio overview: [`../../studio-overview.md`](../../studio-overview.md)
- Sibling routes:
  - [`studio-isis-cost-tracking.md`](./studio-isis-cost-tracking.md)
  - [`studio-isis-budget-management.md`](./studio-isis-budget-management.md)

## Open questions / known gaps

- [ ] No breadcrumb on this route — navigation is via sibling quick-actions