observability-query

observability-query is a skill for Claude Code from JoshuaOliphant/claude-plugins. It costs 143 tokens per session (972 once invoked), scanned A, original, no licence file.

A skill for querying telemetry collected by a project's local observability harness. The harness stores development traces, metrics, and logs so you can inspect what the code did.

In plain words
What is it for?
Investigating failures, checking whether a change actually executed, and examining local observability data during development.
Why use it?
It helps answer questions such as whether a code path ran or whether a new endpoint was reached, using recorded evidence instead of guesswork.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the observability-harness plugin — 2 skills 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/joshuaoliphant/claude-plugins/observability-query
Any agent
npx skills add JoshuaOliphant/claude-plugins --skill observability-query
Clone the repo
git clone --depth 1 https://github.com/JoshuaOliphant/claude-plugins

Made for: Claude Code.

Or install observability-harness, the plugin that ships this one along with the rest of its 2 skills.

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 observability-query

README.md
[![agentmods](https://agentmods.dev/badge/skills/joshuaoliphant/claude-plugins/observability-query.svg)](https://agentmods.dev/skills/joshuaoliphant/claude-plugins/observability-query)
Your own site
<a href="https://agentmods.dev/skills/joshuaoliphant/claude-plugins/observability-query"><img src="https://agentmods.dev/badge/skills/joshuaoliphant/claude-plugins/observability-query.svg" alt="Measured on agentmods" height="20"></a>
Per session 143 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 972 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00143 $0.00972
Opus 5 $0.00072 $0.00486
Sonnet 5 $0.00029 $0.00194
Haiku 4.5 $0.00014 $0.00097

Measured 5d ago against content hash 7c659360d312, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

observability-query scanned grade A 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 5d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s 'http://127.0.0.1:8428/api/v1/label/__name__/values' | jq .
plugins/observability-harness/skills/observability-query/SKILL.md · 85 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 5d ago First seen · 85 lines · 143 tokens per session scan A 7c659360d312

Subscribe to this mod's changes

observability-query is a skill published in the GitHub repository JoshuaOliphant/claude-plugins (6 stars, last pushed 2d ago), with no licence file. It adds 143 tokens to every session and 972 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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