0x0 Server Completions

Server completions are the narrow code-suggestion app surface in @anonymous-dev/0x0-server. Use them for ghost text in editors. A client sends the text before and after the cursor, the language, and the file path. The server turns that buffer context into a provider request and returns only the suggested completion text.

HTTP Completion

POST /completions returns a one-shot response.

Field	Required	Description
`prefix`	yes	Text before the cursor
`suffix`	yes	Text after the cursor
`language`	yes	File language
`filepath`	yes	Current file path
`maxTokens`	no	Completion budget
`temperature`	no	Sampling temperature
`provider`	no	Provider override
`model`	no	Model override

curl -X POST http://localhost:4096/completions \
  -H "Content-Type: application/json" \
  -d '{
    "prefix": "function add(a, b) {",
    "suffix": "}",
    "language": "javascript",
    "filepath": "src/math.js"
  }'

WebSocket Completion

Editor clients can also send a completion one-shot message over /ws. This keeps chat, completion, cancellation, and provider selection on the same local connection. The Neovim completion client is the first consumer of this surface.

Apps

TUI Guides

Server Guides

API Reference

HTTP Completion

WebSocket Completion

​HTTP Completion

​WebSocket Completion

HTTP Completion

WebSocket Completion