---
summary: "Upgrades to mcp-ts-core 0.13.2 and declares stateless HTTP session mode in code, so an unset MCP_SESSION_MODE now resolves stateless instead of falling back to the schema default stateful."
breaking: false
security: false
---

# 0.3.7 — 2026-09-16

## Changed

- **`createApp({ sessionMode: 'stateless' })`** — with `MCP_SESSION_MODE` unset, the server now resolves `stateless` over HTTP; it previously fell back to the schema default `auto`, which resolves to `stateful`. An explicit `MCP_SESSION_MODE` value still overrides. The Docker image and `.env.example` already set `stateless`, so those deployments are unchanged.

## Dependencies

- `@cyanheads/mcp-ts-core` ^0.12.9 → ^0.13.2
- `zod` ^4.6.1 → ^4.6.4
- `@biomejs/biome` ^2.5.12 → ^2.5.13 (dev)
- `@types/node` ^26.2.0 → ^26.5.1 (dev)
- `tsc-alias` ^1.9.4 → ^1.9.5 (dev)