Engineering
When agents orchestrate agents, who's watching?
Multi-agent AI systems fail silently. Learn what proper observability looks like when agents orchestrate agents, and how Sentry keeps you in control.
Engineering
No more monkey-patching: Better observability with tracing channels
Monkey-patching in CJS and module hooks in ESM both instrument libraries from the outside. Tracing Channels let libraries emit their own telemetry — and the ecosystem is already moving.
Engineering
Debugging multi-agent AI: When the failure is in the space between agents
When an agent's tool call silently degrades the input to a completely different agent two steps later, standard monitoring won't catch it. Here's how to find bugs that live between agents.
Engineering
AI agent observability: The developer's guide to agent monitoring
Most discussions about agent observability read like outdated compliance checklists with "AI" substituted for older technologies. They emphasize comprehensive…
Engineering
Seer fixes Seer: How Seer pointed us toward a bug and helped fix an outage
How Sentry's AI debugging tool Seer helped identify and fix a cascading region blocklist bug that caused an outage in Seer's own EU deployment.
Engineering
Building Type-Safe Metrics API in Swift: Part II
Replace Any with type-safe protocols, handle array conformance limitations, and future-proof your Swift enums.
Engineering
Building Type-Safe Metrics API in Swift: Part I
Explore protocol extensions, enums with associated values, and ExpressibleByStringLiteral to build type-safe Swift APIs.
Engineering
"Swizzling" iOS functions in Swift
How to hook pure Swift functions at runtime using an in-process debugger.
Engineering
Reverse Engineering iOS to Fix SDK Crashes
We reverse-engineered a private iOS framework to uncover why iPadOS 26 broke type casting in our SDK.
Engineering
Keeping Up With the Python Ecosystem
The Sentry Python SDK has built-in support for more than 60 popular packages. This is how we make sure we actually support what we claim to be supporting.
Engineering
Tablecloth Trick: Migrating Issue Alerts to a New System
How we silently switched error issue alerts to a new system.
Engineering
From /users/123 to /users/:id: A Guide to Route Parametrization
How Sentry's JS SDKs figure out your dynamic route names to make querying your issues easier.
Engineering
Shipping Features Without Writing Code
How Cursor's background agent added C# support to Sentry with minimal prompting.
Engineering
Building a Product Tour in React
How we went about building a performant, in-app product tour API using only React
