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BB chartsplat-x402

Generate beautiful charts by paying per request with x402 micropayments (USDC on Base) instead of an API key. Use when the user wants a chart and has no CHARTSPLAT_API_KEY but has an EVM wallet, or mentions x402, USDC, micropayment, or pay-per-call. Costs ~$0.005 per chart. Returns PNG images. Supports line, bar, pie, doughnut, radar, polar area, candlestick, and OHLC charts.

ClawHub Agent Skills author: Bobby Galli v1.0.1 MIT-0 4 files body ≈ 1 822 tokens Open the sourceclawhub.ai↗ analyzed 9 d ago

Generate beautiful charts by paying per request with x402 micropayments (USDC on Base) instead of an API key.

As a process B 71/100 · Nearly there — weak spots: running it twice, progress reporting

GeneratorData and analyticsSoftware developmentAI and agentstype 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
93/100
safety, quality, tests
Safety 60%
93
Quality 40%
92
Run on models
none yet
Process rating
B
71/100
Nearly there
Progress reporting w 2
0
Running it twice w 4
30
Failures and branches w 10
50
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.

Risky intent 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 purpose itself is risky: wallets, browser password stores, offensive security. Even an honest implementation gives the agent access to things that cost money.

For the author

Explain in the description why the access is needed and how it is limited; add tests that show refusals on dangerous requests.

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 · 3

    ✓ No critical or high findings

    Medium and low: 3
    • medium Risky intent intent-wallet-secrets skill-card.md:25
      Handles crypto-wallet secrets (seed / mnemonic / private key) — a classic stealer target
      Risk: The skill runs npm CLI code with a wallet private key that can authorize payments.
    • low Secrets in code secret-high-entropy-token references/x402-protocol.md:32
      High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
      - **Mainnet**: `eip155:8453` (Base) — USDC at `0x83…913`
      quoted
    • low Risky intent intent-wallet-secrets SKILL.md:194
      Handles crypto-wallet secrets (seed / mnemonic / private key) — a classic stealer target (documentation table row)
      | `wallet private key required` | Missing wallet | Export `X402…KEY` or pass `--private-key` |
      table

    Files scanned: 4. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    • note edit-residue the text marks something as outdated (lines 134): check that old rules are not kept next to new ones — the full check reads the text for contradictions

    Process rating: all ten parameters 71/100

    • 0Progress reporting. Says nothing while it works
    • 30Running it twice. 1 mutating operations with no state check
    • 50Failures and branches. 0 branches, has a failure section
    • 60Tools and files. Uses tools (web) that frontmatter does not declare
    • 60Result and completion. Output format stated, no completion criterion
    • 70When it triggers. States when to use, but not when not to
    • 70Inputs and preconditions. Inputs and preconditions are listed
    • 100Steps. 10 steps
    • 100Consistency. Name and required fields are in place
    • 100Execution cost. Instruction body is 1822 tokens
    • low The response is described with custom markup (8 tags): a typed call is more reliable

    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)
    • +2Single-language instructions
    • +3Description length 378: enough signal without eating the budget
    • +4Structure: 14 headings
    • +3Step-by-step instructions: 10 items
    • +3Output format is stated explicitly
    • +4Has examples (7 code blocks)
    • +4Reference files are cited in the instructions (1 of 1)
    • +1License stated

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 92.

    External checks

    ClawHub: suspicious
    This skill appears to do what it says, but it should be reviewed because it runs unpinned npm code with a wallet private key that can authorize payments.
    LLM: suspicious (high) · VirusTotal: · 16 Sept 2026