Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add tradecatlabs/tradecat-public --skill onchain-paygit clone --depth 1 https://github.com/tradecatlabs/tradecat-publicWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/tradecatlabs/tradecat-public/onchain-pay)<a href="https://agentmods.dev/skills/tradecatlabs/tradecat-public/onchain-pay"><img src="https://agentmods.dev/badge/skills/tradecatlabs/tradecat-public/onchain-pay/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/tradecatlabs/tradecat-public/onchain-pay"><img src="https://agentmods.dev/badge/skills/tradecatlabs/tradecat-public/onchain-pay.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00193 | $0.04963 |
| Opus 5 | $0.00097 | $0.02482 |
| Sonnet 5 | $0.00039 | $0.00993 |
| Haiku 4.5 | $0.00019 | $0.00496 |
Grade C, and why
onchain-pay-open-api scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Harvests environment variableshighData exfiltration
Enumerating or grepping the environment for keys collects credentials unrelated to what the mod says it does.
### Step 1: Gather credentials This is a copy
98% identical to onchain-pay-open-api — 20 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 467 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Binance Onchain-Pay Open API Skill
Call Binance Onchain-Pay Open API endpoints with automatic RSA SHA256 request signing.
Use Cases & Scenarios
This skill is designed for the following scenarios:
1. 💳 Fiat-to-Crypto Purchase & Send
When to use: User wants to buy crypto with fiat currency and send directly to an external on-chain wallet address
- Buy USDT with USD/EUR/TWD using credit card → Send to MetaMask address on BSC
- Purchase BTC with Google Pay → Transfer to hardware wallet
- Buy USDC with P2P → Send to DeFi protocol contract address
Key APIs: trading-pairs → payment-method-list → estimated-quote → pre-order
2. 🔄 Direct Crypto Transfer (Send Primary)
When to use: User has crypto in Binance account and wants to send to external address
- Send existing USDT from Binance Spot to friend's wallet address
- Transfer ETH to Uniswap contract for trading
- Move crypto from Binance to self-custodial wallet (Trust Wallet, Ledger, etc.)
Key APIs: pre-order with SEND_PRIMARY customization
3. 🔗 Cross-Chain Bridge Operations
When to use: User needs to buy crypto on one chain and transfer to another network
- Buy USDC on Ethereum → Bridge to Polygon for lower fees
- Purchase tokens on BSC → Transfer to Base network
- Fiat to crypto on Solana → Send to Arbitrum for DeFi
Key APIs: crypto-network → pre-order with network selection
4. 🏪 Merchant Payment Integration
When to use: Integrate crypto payment gateway for e-commerce or services
- Accept fiat payments and auto-convert to crypto
- Enable "Pay with Crypto" checkout flow
- Process subscription payments with crypto
Key APIs: pre-order with externalOrderId tracking
5. 🤖 Smart Contract Interaction (Onchain-Pay Easy)
When to use: Buy crypto and execute smart contract in one transaction
- Buy USDT and deposit to lending protocol
- Purchase tokens and stake in DeFi pool
- Fiat on-ramp directly to GameFi or NFT marketplace
Key APIs: pre-order with ON_CHAIN_PROXY_MODE customization
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 467 lines · 193 tokens per session scan C 070afdb2631c
onchain-pay-open-api is a skill published in the GitHub repository tradecatlabs/tradecat-public (956 stars, last pushed 3d ago), licensed MIT. It adds 193 tokens to every session and 4,963 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it C with 1 finding (harvests environment variables). It is 98% identical to onchain-pay-open-api, differing in 20 lines, and is treated as a copy.
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