Implement Server-Sent Events (SSE) for Real-time Agent Communication

- Add server-side SSE endpoint (/stream?from=N) for streaming state updates and messages
- Replace polling with SSE in frontend for real-time updates with significant performance improvements
- Implement efficient connection handling with backoff strategy for reconnections
- Add visual network status indicator in UI to show connection state
- Use non-blocking goroutine with channel pattern to handle SSE message delivery
- Ensure proper message sequencing and state synchronization between client and server
- Fix test suite to accommodate the new streaming architecture
- Update mocks to use conversation.Budget instead of ant.Budget

Co-Authored-By: sketch <hello@sketch.dev>
7 files changed
tree: 2255018ca38ba211e57eb9e76e87b82d61a0c826
  1. .github/
  2. .vscode/
  3. ant/
  4. bin/
  5. browser/
  6. claudetool/
  7. cmd/
  8. dockerimg/
  9. httprr/
  10. llm/
  11. loop/
  12. skabandclient/
  13. skribe/
  14. termui/
  15. webui/
  16. .clabot
  17. .gitignore
  18. CONTRIBUTING.md
  19. go.mod
  20. go.sum
  21. LICENSE
  22. README.md
README.md

Sketch

Sketch is an agentic coding tool focused on the Go programming language. Sketch runs in your terminal, has a web UI, understands your code, and helps you get work done. To keep your environment pristine, sketch starts a docker container and outputs its work onto a branch in your host git repository.

To get started:

go install sketch.dev/cmd/sketch@latest
sketch

Requirements

Currently sketch runs on macOS and linux. It uses docker/colima for containers.

macOS: brew install colima linux: apt install docker.io (or equivalent for your distro)

The sketch.dev service is used to provide access to an LLM service and give you a way to access the web UI from anywhere.

Feedback/discussion

We have a discord server to discuss sketch.

Join if you want! https://discord.gg/R82YagTASx

Development

Go Reference

See CONTRIBUTING.md

Open Source

Sketch is open source. It is right here in this repository! Have a look around and mod away.

If you want to run sketch entirely without the sketch.dev service, you can set the flag -skaband-addr="" and then provide an ANTHROPIC_API_KEY environment variable. (More LLM services coming soon!)