ethereum-query

ethereum-query is a skill for Claude Code, Codex from fisker086/AIOps. It costs 17 tokens per session (248 once invoked), scanned A, original, Apache-2.0.

A read-only tool for looking up information on the Ethereum blockchain, a public record of cryptocurrency activity. It can inspect blocks, transactions, addresses, network details, and gas prices.

In plain words
What is it for?
Use it to check the latest block, inspect a transaction by its hash, view an address's ETH balance or nonce, check gas prices, and identify the network or chain ID.
Why use it?
It avoids manually searching blockchain explorers or writing custom queries for basic network checks. It cannot send transactions or move funds.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to check the latest block, inspect a transaction by its…

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Install with agentmods
npx agentmods add skills/fisker086/aiops/ethereum_query
Install

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.

Any agent
npx skills add fisker086/AIOps --skill ethereum_query
Clone the repo
git clone --depth 1 https://github.com/fisker086/AIOps

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for ethereum-query

README.md
[![agentmods](https://agentmods.dev/badge/skills/fisker086/aiops/ethereum_query.svg)](https://agentmods.dev/skills/fisker086/aiops/ethereum_query)
Your own site
<a href="https://agentmods.dev/skills/fisker086/aiops/ethereum_query"><img src="https://agentmods.dev/badge/skills/fisker086/aiops/ethereum_query.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 248 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00017 $0.00248
Opus 5 $0.00009 $0.00124
Sonnet 5 $0.00003 $0.00050
Haiku 4.5 $0.00002 $0.00025

Measured 7d ago against content hash ebfc42dc3b41, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ethereum-query 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 7d 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.

skills/ethereum_query/SKILL.md · 26 lines

What it actually says

Ethereum Query Skill

Provides read-only Ethereum blockchain data querying capabilities:

  • Get latest block number and block details
  • Query address balance (ETH)
  • Get transaction details by hash
  • Check current gas prices
  • Get nonce for an address
  • Get chain ID and network info

Use builtin_ethereum_query tool with fields:

  • operation: one of "block_number", "block", "balance", "transaction", "gas_price", "nonce", "chain_id"
  • block_number: (optional) specific block number for block query
  • address: (optional) Ethereum address for balance/nonce queries
  • tx_hash: (optional) transaction hash for transaction query
  • network: (optional) Ethereum network: "mainnet", "sepolia", "holesky" (default: "mainnet")

Note: All operations are read-only. No transaction signing or sending is supported.

Changes

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.

  1. 7d ago First seen · 26 lines · 17 tokens per session scan A ebfc42dc3b41

Subscribe to this mod's changes

ethereum-query is a skill published in the GitHub repository fisker086/AIOps (22 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 17 tokens to every session and 248 once invoked, about $0.0001 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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