android-tombstone-symbolication SKILL.md skillA
android-tombstone-symbolication from dotnet/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dotnet/skills/android-tombstone-symbolication@git:20260421.05aeb65Pins git:20260421.05aeb65 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dotnet/skills
- Path
plugins/dotnet-diag/skills/android-tombstone-symbolication/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260421.05aeb65, committed Apr 21, 2026
- First version recorded
- Mar 7, 2026
- Size
- 8,220 bytes
- Repository stars
- 5,836
- License
- MIT
Symbolicate the .NET runtime frames in an Android tombstone file. Extracts BuildIds and PC offsets from the native backtrace, downloads debug symbols from the Microsoft symbol server, and runs llvm-symbolizer to produce function names with source file and line numbers. USE FOR triaging a .NET MAUI or Mono Android app crash from a tombstone, resolving native backtrace frames in libmonosgen-2.0.so or libcoreclr.so to .NET runtime source code, or investigating SIGABRT, SIGSEGV, or other native…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Android Tombstone .NET Symbolication Resolves native backtrace frames from .NET Android app crashes (MAUI, Xamarin, Mono) to function names, source files, and line numbers using ELF BuildIds and Microsoft's symbol server. **Inputs:** Tombstone file or logcat crash output, `llvm-symbolizer` (from Android NDK or any LLVM 14+ toolchain), internet access for symbol downloads. **Do not use when:** The crash is a managed .NET exception (visible in logcat with a managed stack trace), the crashing library is not a .NET component (e.g., `libart.so`), or the tombstone is from iOS. --- ## Workflow ### Step 1: Parse the Tombstone Backtrace Each backtrace frame has this format: ``` #NN pc OFFSET /path/to/library.so (optional_symbol+0xNN) (BuildId: HEXSTRING) ``` Extract: **frame number**, **PC offset** (hex, already library-relative), **library name**, and **BuildId** (32–40 hex chars). Symbolicate all threads by default (background threads like GC/finalizer often have useful .NET frames). The crashing thread's backtrace is listed first; additional threads appear after `--- --- ---` markers. **Format notes:** …
Read the whole file at its exact version.
How to install
mdr add dotnet/skills/android-tombstone-symbolication@sha256:3e25d754833c1a36The line at the top of this page pins the label git:20260421.05aeb65, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_mj5qei7ocv5lssz3)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Mar 7, 2026 and Apr 21, 2026, about one every 45 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260421.05aeb65 latest | 2026-04-21 | 05aeb65 | 8,220 B | A | view · diff |
| git:20260307.042a9d2 | 2026-03-07 | 042a9d2 | 8,207 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8220 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
dotnet/skills · 5,836 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mj5qei7ocv5lssz3 GET https://markdownregistry.com/api/v1/resolve?ref=dotnet/skills/android-tombstone-symbolication GET https://markdownregistry.com/api/v1/blob/3e25d754833c1a362b3d1968cc81ab75b0d1824b161c3ab9d14113a41cacbe9f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.