durable-objects

95 / 100 · Low risk

Fine to try.

By butterbase-ai/butterbase-skills (GitHub) · coding · 536 stars · scanned at commit a908403

Use when building stateful per-key actors — chat rooms, multiplayer rooms, rate limiters, long-running agents, leaderboards — that need persistent in-memory + storage state across requests

Works with any agent that supports SKILL.md skills.

What this skill can do

Sends data to these websites: app.butterbase.dev

The author does not mention this.

Found in 14 places.

skills/durable-objects/SKILL.md, line 40- **Browser WebSockets need `access_mode: "public"`.** Browsers can't set custom headers on WS upgrade, and the `_do/` dispatcher reads auth *only* from `Author
skills/durable-objects/SKILL.md, line 50async fetch(req: Request): Promise<Response> {
skills/durable-objects/SKILL.md, line 52const pair = new WebSocketPair();

Show 11 more

skills/durable-objects/SKILL.md, line 84| `new WebSocketPair()` | Returns `[client, server]` — return `client` to browser, accept `server` |
skills/durable-objects/SKILL.md, line 108| `public` | None — validate tokens inside `fetch()` if you need any |
skills/durable-objects/SKILL.md, line 112> The dispatcher only checks header **shape**, not validity. For real auth on production DOs, validate the token inside `fetch()`.
skills/durable-objects/SKILL.md, line 129fetch("https://app.butterbase.dev/_do/chat-room/lobby", {
skills/durable-objects/SKILL.md, line 135const ws = new WebSocket("wss://app.butterbase.dev/_do/chat-room/lobby");
skills/durable-objects/SKILL.md, line 179async fetch(req: Request): Promise<Response> {
skills/durable-objects/SKILL.md, line 181const pair = new WebSocketPair();
skills/durable-objects/SKILL.md, line 209async fetch(req: Request): Promise<Response> {
skills/durable-objects/SKILL.md, line 230async fetch(req: Request): Promise<Response> {
skills/durable-objects/SKILL.md, line 232const r = await fetch(this.env.AI_API_ENDPOINT, {
skills/durable-objects/SKILL.md, line 280| Rely on dispatcher access_mode for real auth | Validate JWTs inside `fetch()` for production |

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'durable-objects' ] || [ -L ~/.agents/skills/'durable-objects' ]; then echo 'A skill folder named durable-objects already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/butterbase-ai/butterbase-skills' "$d" && git -C "$d" checkout --quiet 'a90840372baf518a6747217cc8b6b2f9bd75bf6e' -- 'skills/durable-objects' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/durable-objects' ~/.agents/skills/'durable-objects' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'durable-objects' ~/.claude/skills/'durable-objects' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-08	`a908403`	100
2026-11-07	`a908403`	75