choose-fsharp-web-framework

choose-fsharp-web-framework is a skill for Claude Code, Codex from gaelic-ghost/socket. It costs 51 tokens per session (749 once invoked), scanned A, original, Apache-2.0.

A decision guide for choosing an F# web framework before writing the application. It compares several frameworks by how they structure routes, dependencies, tests, and deployment.

In plain words
What is it for?
Use it when starting an F# web service and deciding between ASP.NET Core Minimal APIs, Giraffe, Falco, Oxpecker, and Saturn.
Why use it?
It prevents the framework choice from deciding the whole architecture by accident. It helps keep the domain code, web server, data storage, and deployment concerns separate.

Skill for Claude CodeCodex

Part of the dotnet-skills plugin — 12 skills shipped together

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/gaelic-ghost/socket/choose-fsharp-web-framework
Any agent
npx skills add gaelic-ghost/socket --skill choose-fsharp-web-framework
Clone the repo
git clone --depth 1 https://github.com/gaelic-ghost/socket

Made for: Claude Code, Codex.

Or install dotnet-skills, the plugin that ships this one along with the rest of its 12 skills.

Wrote 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.

agentmods badge for choose-fsharp-web-framework

README.md
[![agentmods](https://agentmods.dev/badge/skills/gaelic-ghost/socket/choose-fsharp-web-framework.svg)](https://agentmods.dev/skills/gaelic-ghost/socket/choose-fsharp-web-framework)
Your own site
<a href="https://agentmods.dev/skills/gaelic-ghost/socket/choose-fsharp-web-framework"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/choose-fsharp-web-framework.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 749 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 $0.00051 $0.00749
Opus 5 $0.00026 $0.00375
Sonnet 5 $0.00010 $0.00150
Haiku 4.5 $0.00005 $0.00075

Measured yesterday against content hash 54323cd5c16a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

choose-fsharp-web-framework 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 yesterday.

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.

plugins/dotnet-skills/skills/choose-fsharp-web-framework/SKILL.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Choose F# Web Framework

Choose the web surface before scaffolding. Keep the application's F# domain model, HTTP host, persistence, and deployment decision explicit instead of treating a framework DSL as the whole architecture.

Source Check

Inspect the repository and its locked packages first. When a current framework behavior matters, use its official documentation before generating code:

Selection

Need Default fit Why
Small service using standard ASP.NET endpoint conventions Minimal APIs Least extra framework surface; keep idiomatic F# modules around the host.
Composable middleware-style functional handlers Giraffe HttpHandler composition over the ASP.NET Core pipeline.
Lightweight functional API or full-stack server toolkit Falco Direct routing and response helpers with ordinary ASP.NET Core integration.
Endpoint-routing / Minimal-API-shaped F# DSL Oxpecker F# endpoint handlers and middleware on ASP.NET Core Endpoint Routing.
Established convention-heavy F# MVC application Saturn Use only when its MVC/scaffolding shape is desired by the project.

Do not select from popularity alone. Check existing package choices, team experience, endpoint style, HTML/view needs, authentication, hosting, and how much framework-specific API the project is willing to own.

Workflow

  1. Classify the application: API, HTML server app, webhook, internal tool, background worker with health endpoints, or full-stack application.
  2. Inspect its existing ASP.NET Core host, package versions, test harness, configuration, and deployment files.
  3. State the chosen framework and why the alternatives do not fit this project.
  4. Keep domain operations in F# modules independent of HTTP handlers.
  5. Use the matching framework skill for Giraffe, Falco, or Oxpecker. For Minimal APIs use dotnet:aspnet-core-service-workflow; for Saturn, inspect its local conventions and official documentation before making framework-specific edits.
  6. Select the smallest useful test level and run dotnet build plus the relevant dotnet test command.

Read the full file on GitHub · 67 lines

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. yesterday First seen · 67 lines · 51 tokens per session scan A 54323cd5c16a

Subscribe to this mod's changes

choose-fsharp-web-framework is a skill published in the GitHub repository gaelic-ghost/socket (7 stars, last pushed 9d ago), licensed Apache-2.0. It adds 51 tokens to every session and 749 once invoked, about $0.0003 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 2026-09-03.

Related

Other skills, from other repositories

pipeline

Use when the user wants a feature idea taken end-to-end in one autonomous run — phrases like "run the whole pipeline", "take this feature from idea to finished branch", "brainstorm then build it autonomously", "do everything from idea to merged", "implement all phases without stopping". Triggers when they want…

kardebadas/claude-plugin · 80 tokens

craft

Use when a product idea is still vague and needs to become a clear definition of what to build — "let's craft an app like X", "help me define what I actually want", "clarify this idea before we plan it". Also use before planning or implementation when requirements, UX, domain behaviour, or technical preferences have…

kardebadas/claude-plugin · 83 tokens

chief-financial-officer

Owns the financial position: planning, budgeting, forecasting, unit economics, cash, and the numbers the business is run and reported on. Use this to build or challenge a budget, model a decision's financial consequence, assess unit economics or runway, evaluate an investment or spend request, set financial controls…

cbrock84/headcount · 88 tokens

chief-strategy-officer

Owns where the business plays and how it wins over a multi-year horizon — portfolio choices, corporate development, strategic partnerships, and planning under uncertainty. Use this for a decision about which markets or businesses to be in, whether to build, buy, or partner, how to allocate capital across business…

cbrock84/headcount · 93 tokens

business-growth-consultant

Finds the single constraint currently limiting a business's growth and the highest-leverage moves against it, rather than producing a list of everything that could be improved. Use this when growth has stalled or slowed, when deciding where to spend limited time or budget, when revenue rises but profit does not, when…

cbrock84/headcount · 81 tokens

ceo-advisor

Pressure-tests a decision, plan, or idea before it is committed to — surfacing the assumption it rests on, the case against it, and what would have to be true for it to work. Use this when weighing options, when a plan needs challenging before commitment, when you have already decided and want a genuine gut check…

cbrock84/headcount · 106 tokens