Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents • Hacker News Board

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#11

Post by creatorofuniv » Sat, Sep 12, 2026, 3:46 AM UTC

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Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#12

Post by poilcn » Sat, Sep 12, 2026, 4:03 AM UTC

Interesting, thanks. Seeing agents querying compiled code using reflection to find references looks painful and inefficient. Made me want to help little buddy somehow, but had no idea how

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#13

Post by el_benhameen » Sat, Sep 12, 2026, 4:35 AM UTC

spicyusername wrote: post #9

Love to see C# love. It's a great language. Super underrated in my opinion. Unions coming in .NET 11 / C# 15 are going to be great.

Very excited to see union types and to see C# on here. C# can feel like a bit of a scarlet letter in the bay.

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#14

Post by coverband » Sat, Sep 12, 2026, 5:37 AM UTC

Is this compatible with Graphify-Labs/graphify, w/r/t existing output formats?

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#15

Post by zachsaw » Sat, Sep 12, 2026, 6:16 AM UTC

coverband wrote: post #14

Is this compatible with Graphify-Labs/graphify, w/r/t existing output formats?

yes it is compatible with graphify - the json can be used directly by graphify.

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#16

Post by zachsaw » Sat, Sep 12, 2026, 6:17 AM UTC

Merad wrote: post #10

Interesting! Have you tried it on any large code bases? I have to wonder if json is going do become unwieldy at the scale of millions of LOC - a SQLite db might be a better choice.

yeah on my repo the json is over 600mb

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#17

Post by bob1029 » Sat, Sep 12, 2026, 6:29 AM UTC

I'm not sure when I would use something like this. My VS copilot already writes one-off scripts that use Roslyn to analyze code. I don't even have to prompt it to do this with gpt5.5+

C#/.NET feels unreasonably effective as a target for LLMs. The reflection and compiler services are not found anywhere else and have profound effects that HN still seems to be taking massive naps on.

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#18

Post by quietraster » Sat, Sep 12, 2026, 7:54 AM UTC

compiler accurate find usages is exactly the context coding agents keep missing. how heavy is the roslyn integration at runtime, does it index on save or on demand

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#19

Post by exceptione » Sat, Sep 12, 2026, 8:33 AM UTC

The tool recommends you to use this skill https://github.com/zachsaw/graphify-csharp/blob/main/.agents...>, but I wonder if this is the right approach if one just want to use this as a consumer in a .net project. It seems very wordy, but wording like these

  "Read the relevant design documents under docs/ before changing architecture."

makes me think that developing 'graphify the tool' and using 'graphify as a tool' are mixed up in the same document? How does an LLM keep track of both this gigantic skill and the user development problem at the same time?

Re: Show HN: Graphify C# – Compiler-accurate Find Usages for coding agents

#20

Post by zachsaw » Sat, Sep 12, 2026, 10:48 AM UTC

quietraster wrote: post #18

compiler accurate find usages is exactly the context coding agents keep missing. how heavy is the roslyn integration at runtime, does it index on save or on demand

It updates based on an interval that you can set as well as on demand. When file changes the file system watcher holds the events in memory until indexing is requested (interval/on-demand).