signalHacker News Show HN2026-09-26
Show HN: KISS, A highly performant agent harness inspired off Pi built in Rust
A Rust-based agent harness inspired by Pi, with optional sub-agents, dynamic workflows, and support for MCP, ACP, and WebMCP. It includes opt-in Jev for dynamic compaction and reasoning, and SDKs for Rust, Python, TypeScript, and WASM, enabling the full agent loop in the browser via WASM.
- for who
- Developers building custom agent harnesses or seeking a high-performance alternative to Pi.
- why now
- New open-source Rust agent harness launches with browser WASM and multi-language SDKs.
- what changes
- They can integrate a performant, embeddable agent harness with multi-language SDKs and browser execution into their projects.
- to do
- Try the KISS harness from the GitHub repository and provide feedback.
key points
- Rust-based agent harness inspired by Pi with sub-agents and dynamic workflows
- Supports MCP, ACP, WebMCP and Jev for dynamic compaction and reasoning
- SDKs for Rust, Python, TypeScript, WASM; runs full agent loop in browser
#agent workflow#rust#open source#mcp
score
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