builder.datafactory

A project guide for building, testing, and running the DataFactory.MCP .NET project. It documents the required .NET 10 SDK and the commands used for common project tasks.

In plain words
What is it for?
Use it to build the whole project or a specific component, run all or selected tests, collect coverage, restore packages, clean builds, run the MCP server, and update its version.
Why use it?
It gives coding agents the project-specific commands they need, reducing mistakes when compiling, testing, restoring packages, or starting the server.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/microsoft/datafactory.mcp/builder.datafactory
Any agent
npx skills add microsoft/DataFactory.MCP --skill builder.datafactory
Clone the repo
git clone --depth 1 https://github.com/microsoft/DataFactory.MCP

Made for: Claude Code, Codex.

Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 442 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00030 $0.00442
Opus 5 $0.00015 $0.00221
Sonnet 5 $0.00006 $0.00088
Haiku 4.5 $0.00003 $0.00044

Measured 2d ago against content hash 32f52d31af43, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

builder.datafactory 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 2d 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.

.github/skills/builder.datafactory/SKILL.md · 56 lines

What it actually says

Building DataFactory.MCP

Prerequisites

  • .NET 10 SDK installed
  • NuGet feeds configured (see nuget.config and nuget.private.config)

Commands

All commands run from the repo root.

Task Command
Build all dotnet build
Build release dotnet build -c Release
Build specific project dotnet build DataFactory.MCP.Core/
Run all tests dotnet test
Run tests verbose dotnet test -v normal
Run specific test dotnet test --filter "FullyQualifiedName~TestName"
Run with coverage dotnet test --collect:"XPlat Code Coverage"
Run MCP server dotnet run --project DataFactory.MCP
Clean + build dotnet clean && dotnet build
Restore packages dotnet restore

Versioning

Version is defined in Directory.Build.props:

<MajorVersion>0</MajorVersion>
<MinorVersion>19</MinorVersion>
<PatchVersion>0</PatchVersion>
<PreReleaseLabel>beta</PreReleaseLabel>

To bump version, use Update-ServerVersion.ps1 or edit Directory.Build.props directly.

NuGet Packages Produced

  • Microsoft.DataFactory.MCP — Main server package
  • Microsoft.DataFactory.MCP.Core — Core library
  • Microsoft.DataFactory.MCP.Http — HTTP transport

Troubleshooting

Issue Fix
Missing packages dotnet restore (check nuget.config for feed URLs)
Framework not found Install .NET 10 SDK
Private feed auth Check nuget.private.config credentials
Build warnings Nullable is enabled project-wide; fix nullable warnings
Changes

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.

  1. 2d ago First seen · 56 lines · 30 tokens per session scan A 32f52d31af43

Subscribe to this mod's changes

builder.datafactory is a skill published in the GitHub repository microsoft/DataFactory.MCP (42 stars, last pushed 20d ago), licensed MIT. It adds 30 tokens to every session and 442 once invoked, about $0.0002 per session on Opus 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 2026-08-30.

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