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 BankrBot/claude-plugins --skill sdk-balance-queriesgit clone --depth 1 https://github.com/BankrBot/claude-pluginsWrote 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/bankrbot/claude-plugins/sdk-balance-queries)<a href="https://agentmods.dev/skills/bankrbot/claude-plugins/sdk-balance-queries"><img src="https://agentmods.dev/badge/skills/bankrbot/claude-plugins/sdk-balance-queries/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/bankrbot/claude-plugins/sdk-balance-queries"><img src="https://agentmods.dev/badge/skills/bankrbot/claude-plugins/sdk-balance-queries.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 | $0.00096 | $0.00645 |
| Opus 5 | $0.00048 | $0.00322 |
| Sonnet 5 | $0.00019 | $0.00129 |
| Haiku 4.5 | $0.00010 | $0.00064 |
Grade A, and why
Bankr x402 SDK - Balance Queries scanned grade A with 0 findings 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 10d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SDK Balance Queries
Query multi-chain token balances and portfolio data using natural language prompts.
Operations
| Operation | Example Prompt | Notes |
|---|---|---|
| Single token balance | "How much USDC do I have?" | Fastest query type |
| Multi-token balance | "Show my ETH, USDC, and DEGEN balances" | Single chain |
| All tokens on chain | "What tokens do I have on Base?" | Lists all holdings |
| Multi-chain balances | "Show my balances across all chains" | Slower, queries all |
| Portfolio value | "What's my total portfolio value in USD?" | USD conversion |
| Token value | "How much is my DEGEN worth?" | Single token USD |
| NFT holdings | "Show me my NFT collections" | Lists collections |
| NFT floor prices | "What's the floor price of my NFTs?" | External API calls |
Prompt Patterns
# Token Balances
"What are my token balances?"
"How much [TOKEN] do I have?"
"Show my [TOKEN] balance on [CHAIN]"
"What's my balance of token 0x..."
# Multi-Chain
"Show my balances across all chains"
"What are my balances on Base and Ethereum?"
"Compare my USDC holdings across all chains"
# Portfolio Value
"What's my total portfolio value in USD?"
"How much is my [TOKEN] worth in USD?"
"What's the total value of my Base holdings?"
# NFTs
"Show me my NFT collections"
"How many Pudgy Penguins do I own?"
"What's the floor price of my NFTs?"
Usage
import { BankrClient } from "@bankr/sdk";
const client = new BankrClient({
privateKey: process.env.BANKR_PRIVATE_KEY as `0x${string}`,
});
const result = await client.promptAndWait({
prompt: "What are my token balances on Base?",
});
console.log(result.response);
// "You have 150.5 USDC, 0.25 ETH, 1000 DEGEN on Base..."
Supported Chains
| Chain | Notes |
|---|---|
| Base | Default chain, fastest responses |
| Ethereum | Mainnet ERC20 and NFTs |
| Polygon | L2 tokens and NFTs |
| Solana | SPL tokens and NFTs |
Specify chain in prompt: "on Base", "on Ethereum", "on Polygon", "on Solana"
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.
- 10d ago First seen · 81 lines · 96 tokens per session scan A a95c74d5d4cb
Bankr x402 SDK - Balance Queries is a skill published in the GitHub repository BankrBot/claude-plugins (85 stars, last pushed 5mo ago), licensed MIT. It adds 96 tokens to every session and 645 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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