OB-1 OB-1
OB-1 is a free, open-source CLI coding agent that runs in your terminal to edit code and verify its own work through an automated testing loop. It requires no initial account or API key to start, utilizing an embedded router to pool across numerous free model providers.
The project continues to refine its multi-agent capabilities, including enhanced support for Model Context Protocol (MCP) servers and the development of adaptive search modes like deep AB-MCTS.
As of
- Automated self-correcting test loop
- Multi-agent parallel investigation
- Persistent project memory with SQLite and graph inspector
- Repository context mapping
- Configurable safety guardrails and sandbox modes
Developers seeking an autonomous terminal-native coding assistant that self-verifies changes against project test suites without requiring initial account setup.
Windows users, as the agent is primarily designed for macOS and Linux environments.
Free tier provides keyless access via an embedded free-models router. Paid frontier access is available via prepaid credits priced at 1 credit = $1, featuring a strict hard cap to prevent overage billing.
A powerful, privacy-conscious choice for terminal-based developers who prioritize open-source tooling, automated test-driven development, and transparent billing.
Is OB-1 free?
OB-1 is Freemium. Free tier provides keyless access via an embedded free-models router. Paid frontier access is available via prepaid credits priced at 1 credit = $1, featuring a strict hard cap to prevent overage billing. Check the official site for current plans.
What is OB-1 best for?
Developers seeking an autonomous terminal-native coding assistant that self-verifies changes against project test suites without requiring initial account setup.
Who makes OB-1?
OB-1 is developed by Overbrilliant. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.
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