getsentry/sentry-java is a Java and Android software development kit for sending application errors, events, and diagnostic information to Sentry. It is used by developers working with Java, Android, Kotlin, and other JVM-based applications to monitor software behavior. The catalogue rules, skills, instructions, and setting support workflows around this SDK.
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.
git clone --depth 1 https://github.com/getsentry/sentry-javaWrote 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.
[](https://agentmods.dev/rules/getsentry/sentry-java/options)<a href="https://agentmods.dev/rules/getsentry/sentry-java/options"><img src="https://agentmods.dev/badge/rules/getsentry/sentry-java/options/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.
<a href="https://agentmods.dev/rules/getsentry/sentry-java/options"><img src="https://agentmods.dev/badge/rules/getsentry/sentry-java/options.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00005 | $0.01442 |
| Opus 5.5 | $0.00002 | $0.00577 |
| Sonnet 5.5 | $0.00001 | $0.00288 |
| Haiku 4.5 | $0.00001 | $0.00144 |
Grade A, and why
options 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.
How it starts
The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Adding Options to the SDK
New features must be opt-in by default. Options control whether a feature is enabled and how it behaves.
Namespaced Options
Newer features use namespaced option classes nested inside SentryOptions, e.g.:
SentryOptions.getLogs()→SentryOptions.LogsSentryOptions.getMetrics()→SentryOptions.Metrics
Each namespaced options class is a public static final class inside SentryOptions with its own fields, getters/setters, and callbacks (e.g. BeforeSendLogCallback, BeforeSendMetricCallback).
A typical namespaced options class contains:
enabledboolean (defaultfalsefor opt-in)sampleRatedouble (if the feature supports sampling)beforeSendcallback interface (nested inside the options class)
To add a new namespaced options class:
- Create the
public static final classinsideSentryOptionswith fields, getters/setters, and any callback interfaces - Add a private field on
SentryOptionsinitialized withnew SentryOptions.MyFeature() - Add getter/setter on
SentryOptionsannotated with@ApiStatus.Experimental
Direct (Non-Namespaced) Options
Options that apply globally across the SDK (e.g. dsn, environment, release, sampleRate, maxBreadcrumbs) live as direct fields on SentryOptions with getter/setter pairs. Use this pattern for options that aren't tied to a specific feature namespace.
Configuration Layers
Options can be set through multiple layers. When adding a new option, consider which layers apply:
1. SentryOptions (always required)
The core options class. Add the field (or nested class) with getter/setter here.
File: sentry/src/main/java/io/sentry/SentryOptions.java
Tests: sentry/src/test/java/io/sentry/SentryOptionsTest.kt
- Test the default value
- Test merge behavior (see layer 2)
2. ExternalOptions (sentry.properties / environment variables)
Allows setting options via sentry.properties file or system properties. Fields use nullable wrapper types (@Nullable Boolean, @Nullable Double) since unset means "don't override the default."
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.
- 1mo ago First seen · 116 lines · 5 tokens per session scan A 01109f7332e1
options is a cursor rule published in the GitHub repository getsentry/sentry-java (1,357 stars, last pushed today), licensed MIT. It adds 5 tokens to every session and 1,442 once invoked, about $0.0000 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 2026-09-03.
Other cursor rules, from other repositories
backend-java-ruoyi-conventions
YiSmartCloud backend Java RuoYi conventions.
springboot-jpa-best-practices
A set of Chinese-language rules for structuring Java Spring Boot applications that use JPA, a library for database access.
40-vfs-saf-architecture
VFS/SAF capability system architecture — the core product moat.
graftcode-java
Mandatory Graftcode architecture rules for building Java backend services (plain Maven/Gradle modules exposed via Graftcode Gateway, not REST).
android-networking-retrofit-okhttp
Build Android networking stacks with Retrofit, OkHttp, interceptors, API contracts, and resilient error handling.
301-framework-spring-boot
Spring Boot development guidelines.