# Upstream

`dsh-echo` is derived from [mcp-cassette](https://github.com/ivermin1123/mcp-cassette).

- Imported commit: `9e48be26cbf1f7fca5edde142673a9b102a25e86`
- Import date: 2026-08-27
- Upstream package version: `0.4.0`
- Upstream license: Apache License 2.0

The upstream Record/Replay, matching, redaction, Streamable HTTP/SSE, contract snapshot, schema-diff, lint, and Vitest engines are retained. This distribution adds DeepSeek Harness bundle/profile integration, session-aware cassette bindings, trajectory annotations, an embedded Web client, isolated profile tooling, and DSH-specific documentation and tests.

The upstream repository did not contain a `NOTICE` file at the imported commit. The local [NOTICE](NOTICE) records attribution and the nature of this derivative work.