explore-dataset

explore-dataset is a skill for Claude Code, Codex from axiomhq/cli. It costs 40 tokens per session (939 once invoked), scanned A, original, MIT.

A procedure for exploring an Axiom dataset, which is a collection of observability records. It examines the dataset's fields, data types, volume, and value patterns.

In plain words
What is it for?
Use it when discovering a dataset, checking its schema, sampling records, or investigating how services, statuses, timestamps, and other fields are stored.
Why use it?
It shows what data is actually available before you write queries, reducing errors caused by assumed field names or formats.

Skill for Claude CodeCodex

Part of the cli plugin — 4 skills, 1 hook shipped together

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.

agentmods
npx agentmods add skills/axiomhq/cli/explore-dataset
Any agent
npx skills add axiomhq/cli --skill explore-dataset
Clone the repo
git clone --depth 1 https://github.com/axiomhq/cli

Made for: Claude Code, Codex.

Or install cli, the plugin that ships this one along with the rest of its 4 skills, 1 hook.

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 explore-dataset

README.md
[![agentmods](https://agentmods.dev/badge/skills/axiomhq/cli/explore-dataset.svg)](https://agentmods.dev/skills/axiomhq/cli/explore-dataset)
Your own site
<a href="https://agentmods.dev/skills/axiomhq/cli/explore-dataset"><img src="https://agentmods.dev/badge/skills/axiomhq/cli/explore-dataset.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 939 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00040 $0.00939
Opus 5 $0.00020 $0.00469
Sonnet 5 $0.00008 $0.00188
Haiku 4.5 $0.00004 $0.00094

Measured 3d ago against content hash 0d337d71e58e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

explore-dataset 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 3d 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/explore-dataset/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dataset Exploration

Systematically explore an Axiom dataset to understand its structure, content, and potential use cases.

Arguments

When invoked with a dataset name (e.g., /explore-dataset logs), the name is available as $ARGUMENTS.

Exploration Protocol

1. List Available Datasets

If no dataset specified, list what's available:

axiom dataset list -f json

2. Schema Discovery

Always start here. Discover actual field names and types:

axiom query "['<dataset>'] | getschema" --start-time -1h

Identify:

  • Field names and types
  • Dotted fields requiring bracket notation
  • Timestamp fields
  • Key dimensions (service, status, level)

OTel trace data: If schema contains trace_id, span_id, attributes.*, note that:

  • Service fields are promoted: use ['service.name'] not ['resource.service.name']
  • Custom attributes: ['attributes.custom']['field'] with tostring() for aggregations
  • See axiom-apl skill's OTel reference for field mappings

3. Sample Data

Examine actual values:

axiom query "['<dataset>'] | limit 10" --start-time -1h -f json

Look for:

  • Data structure and relationships
  • Field value formats
  • Data quality issues

4. Volume Analysis

Understand data volume patterns:

axiom query "['<dataset>'] | summarize count() by bin(_time, 1h) | sort by _time asc" --start-time -24h

Analyze:

  • Event volume over time
  • Data freshness
  • Collection gaps

5. Categorical Field Analysis

For each key categorical field (status, level, service):

axiom query "['<dataset>'] | summarize count() by <field> | top 20 by count_" --start-time -1h

Identify:

  • Value distributions
  • Cardinality
  • Key dimensions for filtering

6. Numerical Field Statistics

For numeric fields (duration, bytes, count):

axiom query "['<dataset>'] | summarize count(), min(<field>), max(<field>), avg(<field>), percentiles(<field>, 50, 95, 99)" --start-time -1h

Read the full file on GitHub · 142 lines

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. 3d ago First seen · 142 lines · 40 tokens per session scan A 0d337d71e58e

Subscribe to this mod's changes

explore-dataset is a skill published in the GitHub repository axiomhq/cli (59 stars, last pushed 7d ago), licensed MIT. It adds 40 tokens to every session and 939 once invoked, about $0.0002 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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