incremental-build SKILL.md skillA

incremental-build from dotnet/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add dotnet/skills/incremental-build@git:20261002.970e0dc

Pins git:20261002.970e0dc 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-msbuild/skills/incremental-build/SKILL.md
Versions recorded
9
Latest version
git:20261002.970e0dc, committed Oct 2, 2026
First version recorded
Mar 17, 2026
Size
17,288 bytes
Repository stars
5,836
License
MIT

Guide for optimizing MSBuild incremental builds. USE FOR: builds slower than expected on subsequent runs, 'nothing changed but it rebuilds anyway', diagnosing why targets re-execute unnecessarily, fixing broken no-op builds. Covers 8 common causes: missing Inputs/Outputs on custom targets, volatile properties in output paths (timestamps/GUIDs), file writes outside tracked Outputs, missing FileWrites registration, glob changes, Visual Studio Fast Up-to-Date Check (FUTDC) issues. Key diagnostic…

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

## Required diagnosis output

For every diagnose or explain request, the final answer must explicitly cover
all of these points, even when the immediate cause is simply missing
`Inputs`/`Outputs`:

- the target and exact root-cause evidence;
- the actual input/output timestamp comparison;
- missing, deleted, cleaned, or rewritten outputs;
- complete inputs, including dynamic or volatile inputs;
- evaluated input/output paths and one-to-one mapping when item lists are batched;
- two identical no-change builds and the expected second-build skip/out-of-date evidence.

Do not edit unless the user asks for a fix. If a check cannot be run, label it
as an unverified check rather than omitting it or claiming success. When
`Inputs` or `Outputs` are absent, report timestamp comparison or one-to-one
mapping as **not applicable — the incremental mechanism is not engaged**, not
as an unverified comparison.

## How MSBuild Incremental Build Works

MSBuild's incremental build mechanism allows targets to be skipped when their outputs are already up to date, dramatically reducing build times on subsequent runs.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add dotnet/skills/incremental-build@sha256:3d8e230432df0507

The line at the top of this page pins the label git:20261002.970e0dc, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_n5gou5rzrdzxbtok.svg)](https://markdownregistry.com/a/art_n5gou5rzrdzxbtok)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 9 versions of this file, between Mar 17, 2026 and Oct 2, 2026, about one every 25 days.

versioncommittedcommitsizeaudit
git:20261002.970e0dc latest2026-10-02 970e0dc 17,288 BA view · diff
git:20261002.2a896b22026-10-02 2a896b2 16,795 BA view · diff
git:20261001.e961b652026-10-01 e961b65 16,282 BA view · diff
git:20260930.ac464422026-09-30 ac46442 14,690 BA view · diff
git:20260624.67e2a472026-06-24 67e2a47 14,688 BA view · diff
git:20260522.0724ccf2026-05-22 0724ccf 14,875 BA view · diff
git:20260522.1a6e78c2026-05-22 1a6e78c 14,865 BA view · diff
git:20260421.05aeb652026-04-21 05aeb65 13,990 BA view · diff
git:20260317.7e7dabd2026-03-17 7e7dabd 13,977 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (17288 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

GitHub

dotnet/skills · 5,836 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_n5gou5rzrdzxbtok
GET https://markdownregistry.com/api/v1/resolve?ref=dotnet/skills/incremental-build
GET https://markdownregistry.com/api/v1/blob/3d8e230432df0507c646999e328bf38e271fb8343697647620457909d27f4351

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.

More from dotnet/skills

authoring-github-workflows SKILL.md skill
dotnet/skills · .agents/skills/authoring-github-workflows/SKILL.md · Author and review GitHub Actions workflow YAML safely so syntactically-valid YAML can't ship a workflow that GitHub…
git:20260616.01b4875 · audit A · 5,836 stars
create-custom-agent SKILL.md skill
dotnet/skills · .agents/skills/create-custom-agent/SKILL.md · Creates VS Code custom agent files (.agent.md) for specialized AI personas with tools, instructions, and handoffs. Use…
git:20260205.8bbd012 · audit A · 5,836 stars
create-skill-test SKILL.md skill
dotnet/skills · .agents/skills/create-skill-test/SKILL.md · Scaffolds eval.yaml evaluation specs for skills, custom agents, and redistributable gh-aw workflow packages in the…
git:20261008.0608d89 · audit A · 5,836 stars
create-skill SKILL.md skill
dotnet/skills · .agents/skills/create-skill/SKILL.md · Scaffolds new agent skills for the dotnet/skills repository. Use when creating a new skill, generating SKILL.md files…
git:20261009.e191d40 · audit A · 5,836 stars
improve-skill-quality SKILL.md skill
dotnet/skills · .agents/skills/improve-skill-quality/SKILL.md · Diagnoses and fixes skills in the dotnet/skills repository that lose to their own baseline, fail to activate, time out…
git:20261006.77aac26 · audit A · 5,836 stars
agentic-workflows SKILL.md skill
dotnet/skills · .github/skills/agentic-workflows/SKILL.md · Route gh-aw design, creation, diagnosis, patching, active debugging, and upgrade requests to the right strategies.
git:20261103.5aac3c0 · audit A · 5,836 stars
AGENTS.md AGENTS.md file
dotnet/skills · AGENTS.md
git:20261002.fd2077a · audit A · 5,836 stars
no-eval-skill SKILL.md skill
dotnet/skills · eng/skill-validator/tests/fixtures/no-eval-skill/SKILL.md · A skill with no eval.yaml for testing discovery behavior.
git:20260220.11bf689 · audit B · 5,836 stars
sample-skill SKILL.md skill
dotnet/skills · eng/skill-validator/tests/fixtures/sample-skill/SKILL.md · A sample skill for testing the validator. Helps with greeting generation.
git:20260220.11bf689 · audit A · 5,836 stars
csharp-scripts SKILL.md skill
dotnet/skills · plugins/dotnet-advanced/skills/csharp-scripts/SKILL.md · Run file-based C# apps with the .NET CLI when the user explicitly wants C#/.NET code without creating a project. Use…
git:20260629.4975793 · audit A · 5,836 stars
dotnet-pinvoke SKILL.md skill
dotnet/skills · plugins/dotnet-advanced/skills/dotnet-pinvoke/SKILL.md · Correctly call native (C/C++) libraries from .NET using P/Invoke and LibraryImport. Covers function signatures, string…
git:20261019.ec3ac07 · audit A · 5,836 stars
nuget-trusted-publishing SKILL.md skill
dotnet/skills · plugins/dotnet-advanced/skills/nuget-trusted-publishing/SKILL.md · Set up NuGet trusted publishing (OIDC) on a GitHub Actions repo — replaces long-lived API keys with short-lived tokens…
git:20260629.4975793 · audit A · 5,836 stars

Every file in dotnet/skills

Browse by kind, by grade A, or by owner.