Sydney Runkle(@sydneyrunkle):building an agent (model + harness) is about 2 things: 1. picking the right model for the job. this means finding the sweet spot on the cost/intelligence curve. 2. building a harness that's fit to the agent's task(s). this means the harness can get the right context to the model at any step. here's a guide on how to build a domain specific harness:

Sydney Runkle

@sydneyrunkle

product + open source @LangChain

Joined October 2023

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Sydney Runkle@sydneyrunkle

2026.09.16 14:54

building an agent (model + harness) is about 2 things: 1. picking the right model for the job. this means finding the sweet spot on the cost/intelligence curve. 2. building a harness that's fit to the agent's task(s). this means the harness can get the right context to the model at any step. here's a guide on how to build a domain specific harness: