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BC etherscan

Query EVM chain data via Etherscan API v2. Use for on-chain lookups where Etherscan v2 applies: balances, transactions, token transfers (ERC-20/721/1155), contract source/ABI, gas prices, event logs, and verification of transaction completion. Also trigger when another tool submits a transaction and you need to confirm it finalized on-chain.

modbender/skill-library-mcp Agent Skills author: modbender MIT 1 file body ≈ 1 905 tokens Open the sourcegithub.com↗ analyzed 2 d ago

Query EVM chain data via Etherscan API v2.

As a process C 50/100 · Has gaps — weak spots: result and completion, inputs and preconditions, failures and branches

IntegrationAI and agentsResearchtype 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%
86
Quality 40%
84
Run on models
none yet
Process rating
C
50/100
Has gaps
Result and completion w 14
0
Inputs and preconditions w 11
0
Failures and branches w 10
0
the three weakest of ten parameters · all ten

How to improve

    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 · 14

    ✓ No critical or high findings

    Medium and low: 14
    • low Secrets in code secret-high-entropy-token SKILL.md:92
      High-entropy token-like string (may be an id, hash or a credential) (documentation table row)
      | WETH  | Ethereum   | 18       | `0xC0…Cc2` |
      table
    • low Secrets in code secret-high-entropy-token SKILL.md:93
      High-entropy token-like string (may be an id, hash or a credential) (documentation table row)
      | USDC  | Ethereum   | 6        | `0xA0…B48` |
      table
    • low Secrets in code secret-high-entropy-token SKILL.md:94
      High-entropy token-like string (may be an id, hash or a credential) (documentation table row)
      | USDT  | Ethereum   | 6        | `0xdA…ec7` |
      table
    • low Secrets in code secret-high-entropy-token SKILL.md:95
      High-entropy token-like string (may be an id, hash or a credential) (documentation table row)
      | DAI   | Ethereum   | 18       | `0x6B…d0F` |
      table
    • low Secrets in code secret-high-entropy-token SKILL.md:96
      High-entropy token-like string (may be an id, hash or a credential) (documentation table row)
      | WBTC  | Ethereum   | 8        | `0x22…599` |
      table
    • low Exfiltration exfil-secret-in-url SKILL.md:119
      Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (placeholder value)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&address=…&chainid=1&tag=…&apikey=…"
      placeholder
    • low Exfiltration net-credential-use SKILL.md:119
      Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&address=…&chainid=1&tag=…&apikey=…"
      vendor-host
    • low Exfiltration exfil-secret-in-url SKILL.md:125
      Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (placeholder value)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&address=…&chainid=1&page=1&offset=10&sort=desc&apikey=…"
      placeholder
    • low Exfiltration net-credential-use SKILL.md:125
      Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&address=…&chainid=1&page=1&offset=10&sort=desc&apikey=…"
      vendor-host
    • low Exfiltration exfil-secret-in-url SKILL.md:131
      Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (placeholder value)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&contractaddress=…&address=…&chainid=1&tag=l
      placeholder
    • low Exfiltration exfil-secret-in-url SKILL.md:138
      Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (placeholder value)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&txhash=…&chainid=1&apikey=…"
      placeholder
    • low Exfiltration net-credential-use SKILL.md:138
      Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&txhash=…&chainid=1&apikey=…"
      vendor-host
    • low Exfiltration exfil-secret-in-url SKILL.md:145
      Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (placeholder value)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&chainid=1&apikey=…"
      placeholder
    • low Exfiltration net-credential-use SKILL.md:145
      Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)
      curl -s "https://api.etherscan.io/v2/api?module=…&action=…&chainid=1&apikey=…"
      vendor-host

    Files scanned: 1. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    ✓ No remarks against the Agent Skills spec

    Process rating: all ten parameters 50/100

    • 0Result and completion. Does not say what the result is
    • 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
    • 60Tools and files. Uses tools (web) that frontmatter does not declare
    • 70When it triggers. States when to use, but not when not to
    • 85Steps. 6 steps, 1 vague phrases
    • 100Consistency. Name and required fields are in place
    • 100Execution cost. Instruction body is 1905 tokens
    • 100Running it twice. No mutating operations

    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
    • +1No license
    • +2Single-language instructions
    • +3Description length 343: enough signal without eating the budget
    • +4Structure: 13 headings
    • +3Step-by-step instructions: 6 items
    • +4Has examples (7 code blocks)

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 84.