feat: add Cloudflare sandbox provider#492
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roerohan wants to merge 1 commit intomattpocock:mainfrom
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Add an isolated sandbox provider that communicates with a user-deployed Cloudflare Worker bridge wrapping the @cloudflare/sandbox SDK. The SDK requires a Worker runtime with Durable Object bindings, so a bridge Worker template is provided in docs/cloudflare-worker-bridge/. Provider features: - exec() with SSE streaming for line-by-line onLine support - copyIn/copyFileOut via base64-encoded uploads and binary downloads - No peer dependency — uses plain fetch to talk to the bridge - Auth via Bearer token (option or CLOUDFLARE_SANDBOX_API_TOKEN env var) Bridge security: - Requires BRIDGE_API_TOKEN (503 if unset) - Path traversal protection (restricts to /home/user/workspace and /tmp/) - Base64 encoding for binary file transfers
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@roerohan is attempting to deploy a commit to the Matt Pocock's projects Team on Vercel. A member of the Team first needs to authorize it. |
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That's really needed indeed! |
bbarry
reviewed
May 2, 2026
| agent: claudeCode("claude-opus-4-6"), | ||
| sandbox: cloudflare({ | ||
| workerUrl: "https://sandcastle-sandbox-bridge.<your-subdomain>.workers.dev", | ||
| apiToken: "your-shared-secret", |
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It seems wrong to advocate putting the api token here. These run commands get committed to your repo. The cloudflare api token is supposed to be secret, so this argument should not exist.
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Summary
@ai-hero/sandcastle/sandboxes/cloudflare) that runs agents in isolated Linux containers on Cloudflare's edge via the Sandbox SDKdocs/cloudflare-worker-bridge/with deployment instructionsProvider details
createIsolatedSandboxProvider, same pattern as Vercel/Daytona)fetchto communicate with the bridgeexec()supports SSE streaming for line-by-lineonLinecallbacks (matching sandcastle's streaming contract)apiTokenoption orCLOUDFLARE_SANDBOX_API_TOKENenv varWorker bridge security
BRIDGE_API_TOKENis required — returns 503 if not configured (no open bridges)/home/user/workspaceand/tmp/Usage
Files changed
src/sandboxes/cloudflare.tsdocs/cloudflare-worker-bridge/worker.tsdocs/cloudflare-worker-bridge/wrangler.jsoncdocs/cloudflare-worker-bridge/README.mdpackage.json./sandboxes/cloudflareexport pathREADME.md.changeset/add-cloudflare-sandbox.md