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ai-instructions: Instructions file for GitHub Copilot

.github/instructions/spring-boot-tracing.instructions.md

ai-instructions spring-boot-tracing.instructions.md is an instructions file for GitHub Copilot from lsampaioweb/ai-instructions. It costs 563 tokens per session, scanned A, original, MIT.

A set of rules for distributed tracing in Spring Boot using Micrometer and OpenTelemetry. Distributed tracing records a request as it travels through multiple services, and OTLP is the standard format used to send those traces to a collector.

In plain words
What is it for?
Use it to add tracing to services, send traces to an OpenTelemetry collector, name traced services, and disable external exporting during tests.
Why use it?
It keeps the tracing libraries, export destination, sampling, and test settings aligned. This makes it easier to follow a request across services without adding unrelated tracing systems.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is lsampaioweb/ai-instructions's own configuration. It tells GitHub Copilot how to work on ai-instructions itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ai-instructions configures →

not rated 1repo changed 1mo ago A scan 563 tokens original MIT
View source ↗ lsampaioweb/ai-instructions
Reuse

Borrowing it

Nothing to install: this file belongs to lsampaioweb/ai-instructions. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/lsampaioweb/ai-instructions/main/.github/instructions/spring-boot-tracing.instructions.md
Clone the repo
git clone --depth 1 https://github.com/lsampaioweb/ai-instructions

Made for: GitHub Copilot.

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Per session 563 This file is loaded in full into every session.
When invoked 563 The same file — it is already loaded in full.
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.
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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 $0.00563 $0.00563
Opus 5.5 $0.00225 $0.00225
Sonnet 5.5 $0.00113 $0.00113
Haiku 4.5 $0.00056 $0.00056

Measured 1mo ago against content hash 96ea3a427a1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ai-instructions spring-boot-tracing.instructions.md 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 1mo 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.

.github/instructions/spring-boot-tracing.instructions.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spring Boot Tracing Contract

Apply this contract when a module adds distributed tracing with Micrometer Tracing and OpenTelemetry. It does not replace the logging, actuator, controller, or pom contracts.

Stack

  • Use Spring Boot's OpenTelemetry support via spring-boot-starter-opentelemetry.
  • Prefer Micrometer Tracing with the OpenTelemetry bridge. Do not add Brave / Zipkin unless the user explicitly asks for that stack.
  • Export traces with OTLP to a Collector (or compatible backend). Do not invent a custom HTTP exporter.

Configuration

  • Set management.tracing.sampling.probability to 1.0 for local demos so every request produces spans. Use a lower probability in production when volume or cost requires it, and document why.
  • Configure OTLP with management.opentelemetry.tracing.export.otlp.endpoint (HTTP protobuf default), pointing at the Collector (for example http://localhost:4318/v1/traces).
  • Disable OTLP metrics export (management.otlp.metrics.export.enabled=false) when the Collector pipeline is traces-only, so demos do not spam failed /v1/metrics posts.
  • Disable OTLP export in application-test.yml so context tests do not require a running Collector.
  • Give each traced service a distinct spring.application.name.

Propagation and HTTP clients

  • Build outbound RestClient instances from the auto-configured RestClient.Builder (requires spring-boot-starter-restclient) so observation and W3C trace context propagate automatically.
  • Do not manually set traceparent headers in application code for ordinary HTTP calls when Boot instrumentation covers the client.

Log correlation

  • When a module enables Micrometer Tracing, include MDC traceId and spanId in that module's Logback console and file patterns.
  • Do not add correlation IDs to modules that do not depend on tracing.

Forbidden

  • Never use Brave as the default tracing bridge when OpenTelemetry was requested.
  • Never require a trace UI (Jaeger, Tempo, Grafana) for a Collector-only setup.
  • Never hardcode sampling below 1.0 in local demos without documenting why.
  • Never create a custom RestClient.builder() for traced calls when the observed auto-configured RestClient.Builder bean is available.

Read the full file on GitHub · 55 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. 1mo ago Changed · +25 tokens per session 96ea3a427a1f
  2. 1mo ago First seen · 55 lines · 538 tokens per session scan A 42f3e1d4c462

Subscribe to this mod's changes

ai-instructions spring-boot-tracing.instructions.md is an instructions file published in the GitHub repository lsampaioweb/ai-instructions (1 stars, last pushed 5d ago), licensed MIT. It adds 563 tokens to every session, about $0.0023 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 2026-09-30.

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