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BC self-hosted-crypto-payments

Add self-custodied crypto payment checkout to a Next.js + Supabase app. Accepts ETH, BTC, SOL, USDC, USDT and 25+ coins across 9 chains. No payment processor fees — HD wallet derivation, on-chain polling, zero third-party dependency. Use when: user asks to add crypto payments, accept Bitcoin/Ethereum/Solana, Web3 checkout, self-hosted crypto, no-middleman payments, blockchain payments, accept USDC/USDT.

ClawHub Agent Skills author: Flacko2048 v1.0.1 MIT-0 12 files body ≈ 1 682 tokens Open the sourceclawhub.ai↗ analyzed 2 d ago

As a process C 56/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions

ProcedureSupabaseCommerceInfrastructuretype 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
88/100
safety, quality, tests
Safety 60%
90
Quality 40%
84
Run on models
none yet
Process rating
C
56/100
Has gaps
Result and completion w 14
0
Inputs and preconditions w 11
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.

Broad scope 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 skill asks for more than the task needs: broad tool access, credential environment variables, binaries. Every extra permission widens the damage from a mistake or a compromise.

For the author

Narrow allowed-tools and the variable list to the minimum; replace binaries with readable sources or scripts.

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 · 6

    ✓ No critical or high findings

    Medium and low: 6
    • medium Broad scope meta-broad-allowed-tools SKILL.md:1
      Broad tool permissions pre-approved: Bash
      allowed-tools: Bash Read Write Edit Glob Grep
    • low Secrets in code secret-high-entropy-token resources/crypto-wallets.ts:55
      High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
      eth:       '0xA0…B48',
      quoted
    • low Secrets in code secret-high-entropy-token resources/crypto-wallets.ts:56
      High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
      base:      '0x83…913',
      quoted
    • low Secrets in code secret-high-entropy-token resources/crypto-wallets.ts:57
      High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
      polygon:   '0x3c…359',
      quoted
    • low Secrets in code secret-high-entropy-token resources/crypto-wallets.ts:58
      High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
      arbitrum:  '0xaf…831',
      quoted
    • low Secrets in code secret-high-entropy-token resources/crypto-wallets.ts:59
      High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
      optimism:  '0x0b…f85',
      quoted

    Files scanned: 12. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    • note frontmatter-key unknown frontmatter key "env"

    Process rating: all ten parameters 56/100

    • 0Result and completion. Does not say what the result is
    • 0Inputs and preconditions. Does not say what the process needs to start
    • 0Progress reporting. Says nothing while it works
    • 20When it triggers. No condition that starts the skill
    • 30Running it twice. 1 mutating operations with no state check
    • 40Consistency. Frontmatter name (self-hosted-crypto-payments) differs from the folder (self-hosted-crypto)
    • 100Tools and files. Tools declared in frontmatter
    • 100Steps. 14 steps
    • 100Failures and branches. 1 branches, has a failure section
    • 100Execution cost. Instruction body is 1682 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

    • +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
    • +2Single-language instructions
    • +3Description length 406: enough signal without eating the budget
    • +4Structure: 14 headings
    • +3Step-by-step instructions: 14 items
    • +4Has examples (5 code blocks)
    • +1License stated

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

    External checks

    ClawHub: suspicious
    This is a legitimate crypto payment template, but its payment checker and fulfillment path need review before production use.
    LLM: suspicious (high) · VirusTotal: · 29 May 2026