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BF express-oauth2-jwt-bearer

Use when adding Auth0 token validation to Express or Node.js APIs - integrates express-oauth2-jwt-bearer SDK to protect Node.js API endpoints with JWT Bearer authentication, scope-based RBAC, claim validation, and optional DPoP support

ClawHub Agent Skills author: Auth0 v1.0.1 MIT-0 17 files body ≈ 2 504 tokens Open the sourceclawhub.ai↗ analyzed 4 d ago

As a process F 46/100 · Will not run — References files that are not bundled: ../auth0-express, ../auth0-nextjs, ../auth0-aspnetcore-api

IntegrationInfrastructuretype and topics are labelled automatically from the skill text
Runs in: OpenClaw Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) Goose OpenCode
JSON
Technical rating
B
82/100
safety, quality, tests
Safety 60%
89
Quality 40%
72
Run on models
none yet
Process rating
F
46/100
Will not run
References files that are not bundled: ../auth0-express, ../auth0-nextjs, ../auth0-aspnetcore-api
Tools and files w 18
0
Result and completion w 14
0
Progress reporting w 2
0
the three weakest of ten parameters · all ten

What is at stake

Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.

Exfiltration medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The instructions or scripts send data out: environment variables, keys, file contents, chat history. You may never notice, because the agent performs the upload as "part of the task".

For the author

If the upload is not needed for the task, remove it: catalogs flag such skills and delist them. If it is needed, name the destination explicitly, say what leaves the machine, and give the user a switch.

How to improve

  1. The text references files that are not there: add them or drop the references.
For the model run — optional
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 3

✓ No critical or high findings

Medium and low: 3
  • medium Exfiltration net-credential-use references/integration.md:274
    Credential used in a network call (verify the destination is the intended service)
    curl -H "Authorization: Bearer $ACCESS_TOKEN" http://loca…000/api/private
  • medium Exfiltration net-credential-use references/integration.md:277
    Credential used in a network call (verify the destination is the intended service)
    curl -H "Authorization: Bearer $ACCESS_TOKEN" http://loca…000/api/messages
  • low Dangerous commands cmd-pipe-to-shell-known-host scripts/utils/validation.mjs:25
    Pipe-to-shell installer from a well-known host (still executes remote code) (string literal in code, not executed)
    "  Linux:  curl -sSfL https://raw.githubusercontent.com/auth0/auth0-cli/main/install.sh | sh\n" +
    code literal

Files scanned: 14. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning missing-ref reference to a missing file: ../auth0-express
  • warning missing-ref reference to a missing file: ../auth0-nextjs
  • warning missing-ref reference to a missing file: ../auth0-aspnetcore-api
  • warning missing-ref reference to a missing file: ../go-jwt-middleware
  • warning missing-ref reference to a missing file: ../auth0-api-python
  • warning missing-ref reference to a missing file: ../auth0-cli

Process rating: all ten parameters 46/100

Will not run. References files that are not bundled: ../auth0-express, ../auth0-nextjs, ../auth0-aspnetcore-api
  • 0Tools and files. 6 referenced file(s) missing: ../auth0-express, ../auth0-nextjs, ../auth0-aspnetcore-api
  • 0Result and completion. Does not say what the result is
  • 0Progress reporting. Says nothing while it works
  • 20When it triggers. No condition that starts the skill
  • 30Running it twice. 3 mutating operations with no state check
  • 55Failures and branches. 1 branches
  • 70Inputs and preconditions. Inputs and preconditions are listed
  • 100Steps. 19 steps
  • 100Consistency. Name and required fields are in place
  • 100Execution cost. Instruction body is 2504 tokens
  • low 11 top-level sections: this looks like several domains in one skill
  • medium 1 test cases, all positive: not one "should refuse" or "should ask first"

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • +3Output format is not stated: the model decides each time
  • -2localhost URLs: will not work for another user
  • -31 of 1 scripts are never mentioned in SKILL.md
  • +2Single-language instructions
  • +3Description length 235: enough signal without eating the budget
  • +4Structure: 16 headings
  • +3Step-by-step instructions: 19 items
  • +4Has examples (8 code blocks)
  • +4Reference files are cited in the instructions (3 of 3)
  • +1License stated

Quality base 70; lint remarks subtract, signals add up to 100. Result: 72.

External checks

ClawHub: clean
This skill is a coherent Auth0 setup helper for protecting Express APIs, with sensitive steps disclosed and user-controlled.
LLM: benign (high) · VirusTotal: · 29 May 2026