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sandbox-bridge

Use when you need to exercise a real, running Sandbox deployment via HTTP — for example to validate SDK changes against a live container, reproduce a user-reported issue, or experiment with the API (including FUSE bucket mounts) without spinning up `wrangler dev`. Documents the Sandbox bridge worker reachable via `SANDBOX_WORKER_URL` + `SANDBOX_API_KEY` when the host injects them.

80

Quality

Does it follow best practices?

Impact

No eval scenarios have been run

SecuritybySnyk

Advisory

Suggest reviewing before use

SKILL.md
Quality
Evals
Security

Quality

Content

100%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a concise, fully actionable reference with a clear sequenced workflow, explicit error/validation signals, and well-signaled deferral to the authoritative OpenAPI spec and repo sources rather than inlining everything.

DimensionReasoningScore

Conciseness

The body is lean and assumes Claude's competence — it never explains what curl, SSE, or base64 are, and every code block and note (e.g. 'never pass the token via a query string') earns its place, matching the score-3 anchor.

3 / 3

Actionability

Fully executable, copy-paste-ready curl commands cover create/exec/read-write/destroy and session lifecycle, with concrete details like the argv shell-splitting convention and a decoded-stdout awk helper, matching the score-3 anchor.

3 / 3

Workflow Clarity

A clearly numbered Typical Flow (create, exec, read/write, destroy) is paired with validation signals (401, exit/error terminal events, the error-codes table, 204 no-op) and explicit cleanup, satisfying the score-3 anchor for clear sequencing with validation.

3 / 3

Progressive Disclosure

No bundle files exist; the single SKILL.md is well-organized into clear sections and defers full schemas to the authoritative live /v1/openapi.json and one-level-deep repo source paths, matching the score-3 anchor for well-signaled references and easy navigation.

3 / 3

Total

12

/

12

Passed

Description

100%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is specific, action-oriented, and clearly states both what the skill documents and when to use it, with natural trigger terms and a distinct niche that avoids conflict with the wrangler dev workflow.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'exercise a real, running Sandbox deployment via HTTP', 'validate SDK changes against a live container', 'reproduce a user-reported issue', 'experiment with the API (including FUSE bucket mounts)' — matching the score-3 anchor for multiple specific concrete actions.

3 / 3

Completeness

Explicitly answers both what ('Documents the Sandbox bridge worker reachable via SANDBOX_WORKER_URL + SANDBOX_API_KEY') and when (a 'Use when...' clause with concrete triggers), matching the score-3 anchor.

3 / 3

Trigger Term Quality

Natural trigger phrases a user would say ('validate SDK changes', 'reproduce a user-reported issue', 'experiment with the API', 'FUSE bucket mounts', 'wrangler dev') give good coverage, above the score-2 'some relevant keywords' bar.

3 / 3

Distinctiveness Conflict Risk

Targets a clear niche (the Sandbox bridge worker, FUSE mounts) and contrasts with 'wrangler dev', making it unlikely to trigger for the wrong skill per the score-3 anchor.

3 / 3

Total

12

/

12

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
cloudflare/sandbox-sdk
Reviewed

Table of Contents

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