opensea-tool-sdk
Build, register, and gate AI-callable tool endpoints using the OpenSea Tool Registry (ERC-8257) on Base. Scaffold HTTPS tools with JSON Schema interfaces, register them onchain, gate access via NFT ownership or x402 pay-per-call (USDC), and call gated tools. For querying OpenSea marketplace data use opensea-api instead.
76
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Does it follow best practices?
Impact
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No eval scenarios have been run
Risky
Do not use without reviewing
Security
3 findings — 1 high severity, 2 medium severity. You should review these findings carefully before considering using this skill.
W007: Insecure credential handling detected in skill instructions
What this means
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
Why it was flagged
Insecure credential handling detected (high risk: 0.90). The prompt includes examples that place private keys and API keys directly into commands and function calls (e.g., `PRIVATE_KEY=0x... npx ...`, `createBankrAccount("your-bankr-api-key")`), which requires the LLM to handle/output secret values verbatim and is therefore high-risk.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.80). The CLI/SDK register flow explicitly fetches the tool manifest at the provided metadata URL at runtime (e.g., https://my-tool.example.com/.well-known/ai-tool/my-tool.json), and that manifest directly controls the tool's inputs/outputs/endpoint/pricing used for registration and agent discovery, so this is a runtime external dependency that can influence agent behavior.
W009: Direct money access capability detected (payment gateways, crypto, banking)
What this means
The skill is specifically designed for direct financial operations, giving the agent the ability to move money or execute financial transactions — such as payment processing, cryptocurrency operations, banking integrations, or market order execution.
Why it was flagged
Direct money access detected (high risk: 1.00). The skill explicitly includes on-chain transaction and payment capabilities: it registers tools via ToolRegistry.registerTool (on Base), requires wallet private keys/wallet adapters to sign/send transactions, and implements x402 pay-per-call using USDC TransferWithAuthorization (paidFetch/paidAuthenticatedFetch). The CLI includes commands that perform on-chain register and pay actions (register, pay, smoke), and the SDK supports external signers (e.g., Bankr) for settling payments. These are specific crypto/payment operations (signing and sending token transfer/contract calls), so the skill grants direct financial execution authority.
- Repository
- ProjectOpenSea/opensea-skill
- Commit
10f23f8
- Audited
- Security analysis
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