# Stackline Open Source

> Four focused, zero-runtime-dependency npm packages for secure object merge,
> deterministic JSON, Server-Sent Events, and local AI tool routing.

- [Package catalog](https://alexandro.net/docs/open-source/): choose and compare packages.
- [Secure deep merge guide](https://alexandro.net/docs/open-source/guides/deepmerge-security/): unsafe keys, arrays, limits, migration, and tests.
- [Stable JSON guide](https://alexandro.net/docs/open-source/guides/stable-json/): stable, safe, and RFC 8785 canonical serialization.
- [SSE streaming guide](https://alexandro.net/docs/open-source/guides/sse-ai-streaming/): parsing, cancellation, reconnects, servers, and limits.
- [Local tool routing guide](https://alexandro.net/docs/open-source/guides/local-tool-routing/): bounded MCP and provider tool discovery.
- [Full machine-readable reference](https://alexandro.net/docs/open-source/llms-full.txt)

## Packages

- `@stackline/deepmerge`: https://alexandro.net/docs/vanilla/deepmerge/
- `@stackline/stable-stringify`: https://alexandro.net/docs/vanilla/stable-stringify/
- `@stackline/sse`: https://alexandro.net/docs/vanilla/sse/
- `@stackline/tool-router`: https://alexandro.net/docs/vanilla/tool-router/