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BC ethereum-wingman

Ethereum development tutor and builder for Scaffold-ETH 2 projects. Triggers on "build", "create", "dApp", "smart contract", "Solidity", "DeFi", "Ethereum", "web3", or any blockchain development task. ALWAYS uses fork mode to test against real protocol state.

modbender/skill-library-mcp Agent Skills author: modbender MIT 9 files · 3 scripts body ≈ 2 409 tokens Open the sourcegithub.com↗ analyzed 3 d ago

Ethereum development tutor and builder for Scaffold-ETH 2 projects.

As a process C 59/100 · Has gaps — weak spots: inputs and preconditions, failures and branches, running it twice

TemplateAI and agentsLearningtype 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
85/100
safety, quality, tests
Safety 60%
94
Quality 40%
72
Run on models
none yet
Process rating
C
59/100
Has gaps
Inputs and preconditions w 11
0
Failures and branches w 10
0
Progress reporting w 2
0
the three weakest of ten parameters · all ten

How to improve

  1. Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 6

✓ No critical or high findings

Medium and low: 6
  • low Secrets in code secret-high-entropy-token AGENTS.md:126
    High-entropy token-like string (may be an id, hash or a credential)
    cast rpc anvil_setBalance 0xBB…FCb 0x56…000
  • low Secrets in code secret-high-entropy-token AGENTS.md:129
    High-entropy token-like string (may be an id, hash or a credential)
    cast rpc anvil_impersonateAccount 0xBB…FCb
  • low Secrets in code secret-high-entropy-token AGENTS.md:132
    High-entropy token-like string (may be an id, hash or a credential)
    cast send 0x83…913 \
  • low Secrets in code secret-high-entropy-token AGENTS.md:134
    High-entropy token-like string (may be an id, hash or a credential)
    --from 0xBB…FCb --unlocked
  • low Secrets in code secret-high-entropy-token AGENTS.md:506
    High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
    address: "0x83…913",
    quoted
  • low Risky intent intent-offensive-security references/historical-hacks.md:339
    Offensive-security / dual-use content (legitimate for authorised testing; review intended use)
    2. **Bug Bounty**: Incentivize white hats

Files scanned: 9. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning description-no-when description does not say WHEN to use the skill (no "use when")

Process rating: all ten parameters 59/100

  • 0Inputs and preconditions. Does not say what the process needs to start
  • 0Failures and branches. Linear process with no failure handling
  • 0Progress reporting. Says nothing while it works
  • 30Running it twice. 4 mutating operations with no state check
  • 60Tools and files. Uses tools (bash) that frontmatter does not declare
  • 60Result and completion. Output format stated, no completion criterion
  • 85Steps. 42 steps, 2 vague phrases
  • 100When it triggers. States when to use and when not to
  • 100Consistency. Name and required fields are in place
  • 100Execution cost. Instruction body is 2409 tokens
  • medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing

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

  • +4Description does not say when NOT to use the skill (false activations)
  • -2localhost URLs: will not work for another user
  • -43 reference files, but SKILL.md never points to them: the model will not open them
  • -33 of 3 scripts are never mentioned in SKILL.md
  • +2Single-language instructions
  • +5Description quotes 4 example trigger phrases
  • +3Description length 259: enough signal without eating the budget
  • +4Structure: 26 headings
  • +3Step-by-step instructions: 42 items
  • +3Output format is stated explicitly
  • +4Has examples (19 code blocks)
  • +1License stated

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