Releases·Tool Release
Dev releases Brain, an open-source minimal agent runtime pitched against LangChain and Mastra (<1ms session, ~25MB binary)
A developer open-sourced 'brain' (github.com/aexhq/brain), a minimal, extensible agent runtime inspired by Anthropic's managed agents engineering post and pi.dev. It targets production agent use cases the author found too rigid in LangChain and Mastra. For practitioners, it offers a lightweight alternative with sub-second cold starts and a small compiled footprint.
2 engagement1 sourceMon, Sep 7, 2026, 10:08 PM
AI Overview
- aexhq/brain is an open-source, extensible agent platform positioning itself as a lighter alternative to LangChain agents and Mastra
- It claims <1ms session creation, <1s cold-start, and a ~25MB compiled binary
- The author cites Anthropic's managed agents engineering post and pi.dev as inspirations, finding LangChain too complicated and Mastra inflexible
Related
Products·building
Brain: minimal extensible agent platform for production, alternative to LangChain/Mastra
Brain is an open-source agent platform positioned as a smaller, more flexible alternative to LangChain and Mastra, aimed at production agent use cases. It draws on Anthropic's managed agents engineering post and pi.dev. It targets developers who find existing agent frameworks too complicated or rigid.
Brain is an open-source agent platform positioned as a smaller, more flexible alternative to LangChain and Mastra, aimed at production agent use cases. It draws on Anthropic's managed agents engineering post and pi.dev. It targets developers who find existing agent frameworks too complicated or rigid.
1 engagement1 sourceredditMon, Sep 7, 2026, 10:10 PM
Products·building
Phoson — minimal open-source Python runtime and terminal CLI for AI agents
Phoson is a framework-free, open-source Python runtime for running AI agents, paired with a terminal CLI. It uses LLMs as the agent backbone while keeping the harness small and replaceable, avoiding heavyweight frameworks like LangChain. It targets developers who find agent frameworks more complicated than the agents themselves.
Phoson is a framework-free, open-source Python runtime for running AI agents, paired with a terminal CLI. It uses LLMs as the agent backbone while keeping the harness small and replaceable, avoiding heavyweight frameworks like LangChain. It targets developers who find agent frameworks more complicated than the agents themselves.
2 engagement1 sourceredditThu, Sep 24, 2026, 08:41 PM
Products·building
Athena - open-source modular local agent framework built on Ollama
Athena is an open-source Python experiment exploring what infrastructure around an LLM is needed to make it useful beyond chat. It runs locally via Ollama with optional cloud backends and combines an agent loop, tools, memory, document ingestion, web access, and permission guardrails. It targets developers who want a sandbox for building local-first agents rather than a production platform.
Athena is an open-source Python experiment exploring what infrastructure around an LLM is needed to make it useful beyond chat. It runs locally via Ollama with optional cloud backends and combines an agent loop, tools, memory, document ingestion, web access, and permission guardrails. It targets developers who want a sandbox for building local-first agents rather than a production platform.
5 engagement1 sourceredditSun, Sep 20, 2026, 10:55 AM
Releases·Tool Release
Show HN: KISS – A Rust agent harness inspired by Pi, with sub-agents, MCP, and browser WASM builds
A developer launched KISS on GitHub, a performant agent harness written in Rust and modeled on the Pi harness, created after frustration with Pi's performance. It targets practitioners who want an embeddable, multi-language agent runtime.
A developer launched KISS on GitHub, a performant agent harness written in Rust and modeled on the Pi harness, created after frustration with Pi's performance. It targets practitioners who want an embeddable, multi-language agent runtime.
4 engagement1 sourcehackernewsSat, Sep 26, 2026, 12:05 AM
Releases·Tool Release
SynapsCLI: Rust agent runtime for low-cost swarm control
SynapsCLI is a lightweight agent runtime written in Rust that orchestrates a swarm of workers while minimizing LLM costs and resource usage. It boots in 20ms, supports any model via OAuth, API keys, or local models, and is extensible through hooks, plugins, and skills.
SynapsCLI is a lightweight agent runtime written in Rust that orchestrates a swarm of workers while minimizing LLM costs and resource usage. It boots in 20ms, supports any model via OAuth, API keys, or local models, and is extensible through hooks, plugins, and skills.
2 engagement1 sourcehackernewsMon, Aug 10, 2026, 01:13 AM