microsoft/win-dev-skills is a collection of AI-agent instructions and tools for creating native Windows applications with WinUI 3 and the Windows App SDK. Windows developers use it to guide agents through app development tasks from scaffolding and design to testing, packaging, and release. The catalogue entries are its agents, skills, and plugin components.
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.
npx skills add microsoft/win-dev-skills --skill windbg-user-ttd-reverse-debugging-triagegit clone --depth 1 https://github.com/microsoft/win-dev-skillsWrote 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/skills/microsoft/win-dev-skills/windbg-user-ttd-reverse-debugging-triage)<a href="https://agentmods.dev/skills/microsoft/win-dev-skills/windbg-user-ttd-reverse-debugging-triage"><img src="https://agentmods.dev/badge/skills/microsoft/win-dev-skills/windbg-user-ttd-reverse-debugging-triage/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/skills/microsoft/win-dev-skills/windbg-user-ttd-reverse-debugging-triage"><img src="https://agentmods.dev/badge/skills/microsoft/win-dev-skills/windbg-user-ttd-reverse-debugging-triage.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 | $0.00053 | $0.00959 |
| Opus 5.5 | $0.00021 | $0.00384 |
| Sonnet 5.5 | $0.00011 | $0.00192 |
| Haiku 4.5 | $0.00005 | $0.00096 |
Grade A, and why
windbg-user-ttd-reverse-debugging-triage 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 8d 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 — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
TTD Reverse Debugging Triage
Load windbg-diagnostic-method first if it is not already loaded in this
conversation, and apply it throughout for evidence ranking, hypothesis testing,
confidence calibration, independent review, and report validation. This skill
adds the bug-family-specific commands and evidence requirements.
Requirements and scope
Time Travel Debugging records a user-mode process for replay, including an authorized application, service, or user-mode driver host process. A dump alone contains no execution timeline. Confirm a valid recording and matching module symbols before attempting timeline queries. It does not record kernel execution or automatically include another process's server-side activity.
Recording can change timing, require substantial storage, and capture sensitive memory. Obtain authorization before capture. Check the installed recorder's help for supported target, architecture, and options. WinDbg's Launch executable (advanced) / Record with Time Travel Debugging flow can record a named test application without guessing a recorder command.
Workflow
1. Open and index the recording
Open the recorded .run file in WinDbg and load public Windows symbols and
matching PDBs for your own binaries.
!tt.index
dx @$cursession.TTD
Confirm the timeline range. Indexing and data-model availability depend on WinDbg/TTD versions; consult the installed help if the command is unavailable.
2. Ask a bounded history question
dx @$cursession.TTD.Calls("MyModule!MyFunction")
dx @$cursession.TTD.Memory(<start-address>, <end-address>, "w")
Query the known function or exact memory range, then inspect relevant results and their timeline positions. An empty result can mean unmatched symbols, uninstrumented execution, or an out-of-range query, not proof of absence.
Use the call query to find allocation/free or module lifetime transitions and the memory query to locate candidate writes. Account for allocator reuse: the same virtual address may represent different objects over the recording.
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.
- 8d ago First seen · 106 lines · 53 tokens per session scan A 8211992ec082
windbg-user-ttd-reverse-debugging-triage is a skill published in the GitHub repository microsoft/win-dev-skills (472 stars, last pushed 2d ago), licensed MIT. It adds 53 tokens to every session and 959 once invoked, about $0.0002 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 2026-10-08.
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