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BC stellar-agent-wallet

A Stellar USDC wallet skill for AI agents. Pay for 402-gated APIs via MPP Router or x402 facilitators, check balances, manage USDC trustlines, swap XLM→USDC on the Classic DEX, pay a Stellar deposit address directly with a memo, and bridge/send USDC cross-chain to Ethereum, Arbitrum, Base, BSC, Polygon, Solana, or back to Stellar via Rozo. Client-only, sponsored mode, testnet and mainnet. Triggers on "stellar wallet", "pay per call stellar", "x402 stellar", "mpprouter", "check stellar balance", "swap xlm to usdc", "add usdc trustline", "bridge from stellar", "send usdc cross-chain", "pay this deposit address with memo", "fund this invoice on stellar", "pay for api with stellar", or when the user shares a G... address with a payment intent.

ClawHub Agent Skills author: Shawn Muggle v1.8.8 MIT-0 41 files body ≈ 6 282 tokens Open the sourceclawhub.ai↗ analyzed 3 d ago

As a process C 57/100 · Has gaps — weak spots: result and completion, inputs and preconditions, consistency

IntegrationAI and agentsInfrastructuretype 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%
84
Quality 40%
80
Run on models
none yet
Process rating
C
57/100
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.

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 SKILL.md body is over 5,000 tokens: move reference detail into references/ and load it when needed.
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 · 12

✓ No critical or high findings

Medium and low: 12
  • medium Exfiltration net-credential-use references/verifying-refunds.md:46
    Credential used in a network call (verify the destination is the intended service)
    curl -sD - -o /dev/null "$URL" -H "Authorization: Payment $CREDENTIAL" | grep -i '^refund-'
  • low Secrets in code secret-high-entropy-token package-lock.json:51
    High-entropy token-like string (may be an id, hash or a credential) (detector / deny-list definition)
    "integrity": "sha5…qkQ+BMQq…Lqg==",
    detector
  • low Secrets in code secret-high-entropy-token package-lock.json:83
    High-entropy token-like string (may be an id, hash or a credential) (detector / deny-list definition)
    "integrity": "sha5…Lkx+esve…s1Q==",
    detector
  • low Secrets in code secret-high-entropy-token package-lock.json:99
    High-entropy token-like string (may be an id, hash or a credential) (detector / deny-list definition)
    "integrity": "sha5…7xp+Ksxi…Vkw==",
    detector
  • low Secrets in code secret-high-entropy-token package-lock.json:291
    High-entropy token-like string (may be an id, hash or a credential) (detector / deny-list definition)
    "integrity": "sha5…TZM+N3P0…O90+1bZv…F8A/HQ==",
    detector
  • low Secrets in code secret-high-entropy-token package-lock.json:387
    High-entropy token-like string (may be an id, hash or a credential) (detector / deny-list definition)
    "integrity": "sha5…mVs+YKyp…f7g==",
    detector
  • low Secrets in code secret-high-entropy-token references/402-dialects-showcase.md:41
    High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
    www-authenticate: Payment id="taXg…EVs", realm="apiserver.mpprouter.dev", method="stellar", intent="charge", request="eyJh…wMC…", expires="2026…1T0
    quoted
  • low Secrets in code secret-high-entropy-token references/402-dialects-showcase.md:51
    High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)
    "challengeId": "taXg…EVs"
    quoted
  • low Secrets in code secret-high-entropy-token references/402-dialects-showcase.md:70
    High-entropy token-like string (may be an id, hash or a credential) (documentation table row)
    | `id` | `taXg…EVs` | Challenge id, **HMAC-bound by the server to every other field**. Must round-trip byte-for-byte into the credential. |
    table
  • low Secrets in code secret-high-entropy-token references/402-dialects-showcase.md:251
    High-entropy token-like string (may be an id, hash or a credential)
    X-Payment: eyJ4…LCJ…
  • low Exfiltration net-credential-use references/sdk-api-cheatsheet.md:106
    Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)
    curl "https://friendbot.stellar.org?addr=…"
    vendor-host
  • low Exfiltration net-credential-use scripts/generate-keypair.ts:82
    Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)
    console.log(`     curl 'https://friendbot.stellar.org?addr=…'`);
    vendor-hostquoted

Files scanned: 24. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning body-long SKILL.md body ≈ 6282 tokens (recommended < 5000); move details to references/

Process rating: all ten parameters 57/100

  • 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
  • 40Consistency. Frontmatter name (stellar-agent-wallet) differs from the folder (stellar-agentic-wallet)
  • 60Tools and files. Uses tools (bash, web, node) that frontmatter does not declare
  • 70Execution cost. Instruction body is 6282 tokens
  • 85Steps. 60 steps, 2 vague phrases
  • 100When it triggers. States when to use and when not to
  • 100Failures and branches. 7 branches, has a failure section
  • 100Running it twice. Mutating operations check current state
  • medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
  • low 14 top-level sections: this looks like several domains in one skill
  • 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

  • +4Description does not say when NOT to use the skill (false activations)
  • +3Output format is not stated: the model decides each time
  • -31 of 2 scripts are never mentioned in SKILL.md
  • +1No license
  • +2Single-language instructions
  • +5Description quotes 12 example trigger phrases
  • +3Description length 749: enough signal without eating the budget
  • +4Structure: 20 headings
  • +3Step-by-step instructions: 60 items
  • +4Has examples (7 code blocks)
  • +4Reference files are cited in the instructions (6 of 7)

Quality base 70; lint remarks subtract, signals add up to 100. Result: 80.

External checks

ClawHub: clean
This is a high-impact Stellar wallet skill, but its fund movement, secret handling, network use, and confirmations are clearly disclosed and purpose-aligned.
LLM: benign (high) · VirusTotal: · 21 Aug 2026