.NET and ASP.NET Core error tracking your coding agent can read

Updated 2026-11-13

Runheed accepts events from Sentry SDKs, so a .NET app reports through the Sentry NuGet package: point its DSN at your Runheed project and your coding agent reads each exception over MCP from Claude Code, Cursor or any MCP client. Tested with Sentry 7.0 on .NET 9. ASP.NET Core apps add Sentry.AspNetCore, which uses it underneath.

Set it up

1.Add the package (Sentry.AspNetCore for a web app).

terminalbash

dotnet add package Sentry
# ASP.NET Core:
dotnet add package Sentry.AspNetCore

2.Initialize it with the project's Sentry SDK DSN (Projects page, or ask your agent: runheed_list_projects).

Program.cscsharp

// RUNHEED_SENTRY_DSN=https://<key>@runheed.com/<number>
// ASP.NET Core:
var builder = WebApplication.CreateBuilder(args);
builder.WebHost.UseSentry(o =>
{
    o.Dsn = Environment.GetEnvironmentVariable("RUNHEED_SENTRY_DSN");
    o.Release = Environment.GetEnvironmentVariable("GIT_SHA");
});

// Console apps and workers:
// using (SentrySdk.Init(o => o.Dsn = Environment.GetEnvironmentVariable("RUNHEED_SENTRY_DSN"))) { ... }

// Anywhere you catch an exception you still want to see:
try { Billing.ParseInvoiceTotal(input); }
catch (Exception e) { SentrySdk.CaptureException(e); }

3.Connect your agent, then sign in when it asks (other clients: /connect).
terminalbash
```
claude mcp add --transport http runheed https://runheed.com/api/mcp
```

The npm and PyPI releases are not out yet, so these commands install the same package files straight from runheed.com. Nothing else changes when the registry versions ship.

What it catches

Exceptions you report with SentrySdk.CaptureException(e)
Unhandled exceptions in ASP.NET Core requests, through Sentry.AspNetCore
Release and environment from the options

What it does not do

Tracing and profiling are accepted and dropped: Runheed tracks errors only

Then ask your agent

> what broke in production since the last deploy? fix the top one and resolve it with the commit hash

Connect Runheed first: Claude Code, Cursor or another client. Then see how the agent fixes and resolves an error.

Common .NET and ASP.NET Core errors

7-day trial, then $29/mo Other agents and editorsCancel any time from the billing portal