Sentry Instrumentation

Rules and examples for adding Sentry instrumentation the right way — metrics and tracing. Covers how to name a counter, gauge, or duration metric; which tags are safe versus which will blow up your Sentry bill; how to track failures with a small fixed list of error types instead of raw exception strings; how to add metrics around HTTP routes, external API calls, workflow steps, retry loops, and fallback paths without copy-pasting emit calls everywhere; and how to instrument AI agent conversations with `gen_ai.*` spans (invoke_agent / chat / execute_tool, conversation ids, token accounting) for

24 stars 1 forksAI, LLMs & Agents

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add tortastudios/sentry-instrumentation --skill sentry-instrumentation

Manual install

git clone --depth 1 https://github.com/tortastudios/sentry-instrumentation.git /tmp/sentry-instrumentation
mkdir -p ~/.claude/skills
cp -r /tmp/sentry-instrumentation/. ~/.claude/skills/sentry-instrumentation

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Sentry Instrumentation

Two surfaces: **system metrics** (counter / gauge / distribution, duration, failure, resource) and **tracing** (currently the `gen_ai.*` spans for AI agent conversations — see rule 7). Product-analytics events (clicks, funnels, flag exposure) belong in your product-analytics tool — never in Sentry. Python under `examples/python/` is the canonical reference; other languages port the same shapes under idiomatic names.

Do not invoke for product-analytics changes. Stop and use the right tool.

## Decision rules

1. **New metric?** Read `references/signal-model.md` and pick a classmethod constructor (`MetricDef.counter|latency|gauge|resource|failure_counter`). Register in the project's metric registry. **Never** call an emission helper with a raw string or a dynamically-assembled name.
2. **Tag values?** Either enumerate them in `MetricDef.tag_constraints` or route through a bucket function from `references/tagging-and-cardinality.md`.
3. **Inside a loop?** Use `AggregatingCounter` or `DurationAccumulator` (see `references/cost-model.md`). If the metric's `loop_policy` is `"forbidden"` the CI gate refuses any emission inside a `for`/`while` body for that metric.
4. **New surface (HTTP route / external API / workflow step / retry / fallback)?** Use the matching reusable pattern from `references/surface-patterns.md`. Don't hand-roll the emissions.

Read the full skill on GitHub

Details

Skill name: sentry-instrumentation
Repository: tortastudios/sentry-instrumentation
License: MIT
Repo updated: 19 June 2026

FAQ

What does the Sentry Instrumentation skill do?

How do I install the Sentry Instrumentation skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add tortastudios/sentry-instrumentation --skill sentry-instrumentation. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Sentry Instrumentation popular?

It lives in tortastudios/sentry-instrumentation, which has 24 GitHub stars and 1 forks.

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