Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/FritzAndFriends/BlazorWebFormsComponentsnpx agentmods add skills/fritzandfriends/blazorwebformscomponents/bwfc-migrationWrote 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/fritzandfriends/blazorwebformscomponents/bwfc-migration)<a href="https://agentmods.dev/skills/fritzandfriends/blazorwebformscomponents/bwfc-migration"><img src="https://agentmods.dev/badge/skills/fritzandfriends/blazorwebformscomponents/bwfc-migration/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/fritzandfriends/blazorwebformscomponents/bwfc-migration"><img src="https://agentmods.dev/badge/skills/fritzandfriends/blazorwebformscomponents/bwfc-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Rogue Agent · line 332 Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
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 | $0.00115 | $0.11808 |
| Opus 5.5 | $0.00046 | $0.04723 |
| Sonnet 5.5 | $0.00023 | $0.02362 |
| Haiku 4.5 | $0.00012 | $0.01181 |
Grade A, and why
bwfc-migration 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 1mo 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 — 1,158 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web Forms → Blazor Migration with BWFC
Overview
This skill orchestrates the full migration from ASP.NET Web Forms to Blazor Server using a three-layer architecture:
| Layer | Executor | Coverage | Description |
|---|---|---|---|
| L1: Deterministic | webforms-to-blazor CLI tool |
~70% | 27 compiled transforms (16 markup + 11 code-behind), project scaffolding, config migration |
| L2: Contextual | Copilot (this skill) | ~15–20% | TODO-driven transforms requiring semantic understanding — session state, lifecycle, data binding |
| L3: Architectural | Developer | ~10–15% | Business logic, custom controls, auth flows, architectural decisions |
The CLI tool emits structured // TODO(bwfc-*) comments and a JSON migration report. L2 reads that report and applies contextual transforms per TODO category.
Three-layer migration architecture:
Prerequisites
- .NET 10 SDK or later
- Install the global tool:
dotnet tool install -g Fritz.WebFormsToBlazor - BlazorWebFormsComponents NuGet package (added automatically by the tool's scaffolding)
Critical Rules
🚨 CRITICAL: USE THE SHIMS — PRIMARY MIGRATION STRATEGY 🚨
ALWAYS inherit from WebFormsPageBase (via _Imports.razor) and use the Web Forms shims. The BlazorWebFormsComponents library provides shims that make Web Forms patterns work AS-IS in Blazor — no manual rewrites needed.
⛔ CRITICAL DATA-CONTROL RULE
- NEVER replace
<asp:ListView>,<asp:FormView>,<asp:GridView>,<asp:DataList>, or<asp:Repeater>with manual HTML, hand-built<table>markup, or@foreachloops. - ALWAYS migrate these controls to the BWFC component of the same name:
<ListView>,<FormView>,<GridView>,<DataList>,<Repeater>. - These data-bound BWFC components already exist and are the correct migration target.
- If generated BWFC markup is malformed or does not compile, repair the BWFC markup. Do not flatten the control into manual HTML.
What ships with it
20 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- AJAX-TOOLKIT.md 36 KB
- CODE-TRANSFORMS.md 12 KB
- CONFIG-REFERENCE.md 7.4 KB
- CONTROL-REFERENCE.md 16 KB
- PATTERNS.md 5.9 KB
- recipes/circular-self-injection.md 3.0 KB
- recipes/database-seed-initializer.md 2.3 KB
- recipes/eventcallback-signature-mismatch.md 2.3 KB
- recipes/gridview-row-findcontrol.md 3.0 KB
- recipes/innertext-to-markup.md 2.1 KB
- recipes/layout-css-body-class.md 2.4 KB
- recipes/missing-code-behind.md 3.0 KB
- recipes/nested-class-collision.md 2.7 KB
- recipes/new-dbcontext-to-di.md 2.3 KB
- recipes/oauth-page-stubs.md 2.8 KB
- recipes/request-shim-gaps.md 2.7 KB
- recipes/selectmethod-string-binding.md 3.2 KB
- recipes/session-transform-garbling.md 2.4 KB
- REPAIR-PLAYBOOK.md 4.4 KB
- WORKFLOW.md 12 KB
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.
- 1mo ago First seen · 1,158 lines · 115 tokens per session scan A c0842fcd3ffe
bwfc-migration is a skill published in the GitHub repository FritzAndFriends/BlazorWebFormsComponents (454 stars, last pushed 4mo ago), licensed MIT. It adds 115 tokens to every session and 11,808 once invoked, about $0.0005 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 2026-08-30.
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