Micro Agent
Overview
Builder.io Micro Agent is a CLI coding tool that generates a test and iterates on an implementation until that test passes.
Best For Professions:
Builder.io Micro Agent is a CLI coding tool that generates a test and iterates on an implementation until that test passes.
Use a natural-language request to produce a test and repeatedly generate code against it. The README describes a bounded, typically single-file workflow and experimental visual matching, rather than an end-to-end software developer.
Run the npm CLI with a configured provider. The README documents OpenAI, Claude, Ollama and OpenAI-compatible custom endpoints. Builder.io Visual Copilot is a separate optional design-to-code workflow.
MIT-licensed software with no library subscription. Hosted model API calls and other external services are billed separately; running a local model requires suitable local infrastructure.
Historical demo: Introducing Micro Agent, June 19, 2024, by Steve from Builder.io.
Product overview
Capabilities, pricing and fit
Builder.io Micro Agent is a CLI coding tool that generates a test and iterates on an implementation until that test passes.
Information as of October 1, 2026
What it can do
- Workflow
Use a natural-language request to produce a test and repeatedly generate code against it. The README describes a bounded, typically single-file workflow and experimental visual matching, rather than an end-to-end software developer.[1]
- Configuration and access
Run the npm CLI with a configured provider. The README documents OpenAI, Claude, Ollama and OpenAI-compatible custom endpoints. Builder.io Visual Copilot is a separate optional design-to-code workflow.[1], [2]
Where it fits best
- Developers using a test as a target for a small, well-defined coding task.[1]
Sources (2)
- Micro Agent — product identityGitHub · checked 2026-10-01
- Micro Agent — documentation and detailsGitHub · checked 2026-10-01
Autonomy level
76/100
Our subjective rating of how independently the product carries out its documented tasks, considering the human setup, input, approval and review it needs. This is not a measured success rate.
Comparisons
Custom Comparisons
Some of the use cases of Micro Agent:
- Developers using a test as a target for a small, well-defined coding task.
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Pricing model:
Code access:
Popularity level: 65%
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