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A simple and extensible agent loop for Golang projects
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- Last pushed
- Updated Sep 2026
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Goodall
Small Go library for tool-using AI programs: the agentic loop runs until the model finishes or a budget stops it, with Anthropic and OpenRouter providers, tool schemas inferred from Go types, and an optional chat package for threads, SSE and NDJSON.
- Stars
- 5
- Language
- Go
- License
- MIT
- Reading time
- 3 min
- Published by
- Community
- Author
- bensyverson
- Last verified
- Oct 2026
Works forJev for Tool calling
Used inJev for Software & DevTools
- Languages
- Go
- Platforms
- OpenRouter
- Capabilities
- Open sourceRequires API key
Highlights
- The whole loop in a small Go library: a conversation with a model that can call your functions, streamed, until the model finishes or a budget stops it.
- Core has no dependencies beyond the standard library; providers carry streaming, images, PDFs, extended thinking, prompt caching and cost reporting.
- Tool JSON schemas are inferred from the handler's Go input type; AgentTool wraps a second agent as a tool that inherits cancellation and reports its spend.
- Runs end in exactly one Done or Stopped event carrying the conversation and usage on every path, including cancellation.
- Optional chat package adds threads, a store, a run-owning service that survives a client disconnect, a redacted front-end view, and SSE and NDJSON writers.
Quickstart
go
go get github.com/bensyverson/goodallWatch out
Copy reviewed against the repo README on 2026-10-15. The captured README never mentions Jev or TypeSafe: it documents Anthropic and OpenRouter providers and OpenAI-compatible servers, and the item comes from the awesome-jev-projects list. No benchmarks are listed; the README examples use claude-sonnet-5 model names.
Questions about this entry
Short answers drawn from the linked project or page.
A small Go library for programs where an AI model can use tools: the agentic loop runs a conversation where the model can call the functions you give it, streamed as it happens, until the model finishes or a budget says stop.
The captured README does not say: it documents Anthropic and OpenRouter providers plus any OpenAI-compatible server, and never mentions Jev or TypeSafe. Its connection to Jev is its listing in the awesome-jev-projects manifest, so check the repository for any Laya or Jev provider before assuming one.
Anthropic through anthropic.New with a claude-sonnet-5 example, and OpenRouter through openrouter.New with a model like anthropic/claude-sonnet-5; WithBaseURL and WithDialect point OpenRouter at OpenAI or a local server. Keys are read from the environment, and the repo's .env is in shell form so source .env loads them.
go get github.com/bensyverson/goodall. It requires Go 1.27 or later; keys come from the environment. The repository's .env file is shell form, so sourcing it loads the keys without extra tooling.
No. The core package has no dependencies beyond the Go standard library; the Anthropic and OpenRouter support lives in provider packages, and the chat package is optional. That keeps the agent loop itself small and the provider surface replaceable.
They are inferred from the handler's Go input type. The README's weather example uses a struct with json and desc tags, and goodall builds the JSON schema from it, so you never hand-write one. AgentTool wraps a second agent as a tool so one model can delegate a task and read the answer.
Threads, a store, and a service that owns runs so a phone can disconnect mid-answer; a redacted view for the front end with no system prompt or tool internals; and SSE and NDJSON writers. The README calls it what a chat product needs on top of the core loop.
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