sandbase-harness

Dependency freshness

Declared = lowest version the kit's dependency file (package.json, pyproject.toml or requirements.txt) allows. Latest = the npm "latest" tag or the newest PyPI release. TypeScript, the Stripe SDK, FastAPI and other 0.x packages are shown but not counted in the verdict.

What's in the stack

Framework

Vite

UI

Tailwind CSS

AI

Vercel AI SDK, Anthropic SDK

API layer

Hono

Testing

Vitest, Playwright

i18n

i18next

Detected from declared dependencies. A listed package means it's installed, not necessarily fully wired up.

What the README says you get

• AI
  Single provider boundaryOne active model provider boundary configured through Settings V2
• API
  Managed Agents /v1 APIClaude Managed Agents-style `/v1` API and local Console
• API
  Resumable event streamsResumable Server-Sent Events for session replay and debugging
• API
  MCP toolsets and policiesMCP toolsets, permission policies, built-in tools, and skill packages
• API
  TypeScript SDKTypeScript SDK at `managed-agents/sdk`
• API
  Official SDK compatibilityan official Anthropic TypeScript SDK client drives it unchanged
• API
  CMA compatibility matrixCoverage of the published Claude Managed Agents contract is declared entry by entry in `src/core/capabilities/matrix.ts`
• API
  Local delegation subagentLocal delegation is registered separately as an extension.
• API
  Session budget ceilinga session may declare a max_list_cost ceiling at creation
• Data
  SQLite metadata storeSQLite metadata by default for agents, sessions, environments, credential vaults, memory stores, files, skills, and API keys
• Deploy
  Sandbox backendsSandbox backends: local process, Docker (per-session containers), Kubernetes (kubectl exec/cp), self-hosted worker queue
• Deploy
  Development containerThe included development container installs dependencies and builds the runtime.
• Testing
  Release gate scriptRelease gate: `npm run release:check`
• Testing
  SDK conformance testexecuted on every pull request by `tests/conformance/official-sdk-quickstart.test.ts`

Extracted from the kit's README by a local AI model (deepseek-flash) on Oct 12, 2026. Every item is checked against an exact README quote. A README claim is the maker's description, not something we tested.