What is ethereum-query?

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.

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.

It avoids manually searching blockchain explorers or writing custom queries for basic network checks. It cannot send transactions or move funds.

ethereum-query — Skill for Claude Code and Codex by fisker086/AIOps

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/fisker086/aiops/ethereum_query/github.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/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/fisker086/aiops/ethereum_query"><img src="https://agentmods.dev/badge/skills/fisker086/aiops/ethereum_query.svg" alt="Reviewed on agentmods" width="80" 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.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.00248
Opus 5.5	$0.00007	$0.00099
Sonnet 5.5	$0.00003	$0.00050
Haiku 4.5	$0.00002	$0.00025

Measured 2mo ago against content hash ebfc42dc3b41, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 2mo 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.

2mo 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 4mo ago), licensed Apache-2.0. It adds 17 tokens to every session and 248 once invoked, about $0.0001 per session on Opus 5.5. 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.

Web3 and blockchain

ethereum-query next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ethereum-queryfisker086/AIOps	Skill	22	4mo ago	Apache-2.0	A	17	Claude Code, Codex
signature-replayPurpleAILAB/Decepticon	Skill	6.5k	8d ago	Apache-2.0	A	31	Claude Code, Codex
official-sui-skillsMystenLabs/sui	Skill	7.8k	today	Apache-2.0	A	116	Claude Code, Codex
bridgealsk1992/CloddsBot	Skill	3.1k	1mo ago	MIT	A	13	Claude Code, Codex
onchainkitalsk1992/CloddsBot	Skill	3.1k	1mo ago	MIT	A	24	Claude Code, Codex
marginfialsk1992/CloddsBot	Skill	3.1k	1mo ago	MIT	A	11	Claude Code, Codex
devtools-event-clientTanStack/devtools	Skill	510	yesterday	MIT	A	79	Claude Code, Codex