add-api-endpoint

add-api-endpoint is a skill for Claude Code from cwoodruff/dotnet-claude-workshop-content. It costs 63 tokens per session (187 once invoked), scanned A, original, MIT.

A development guide for adding HTTP endpoints to the BookTracker.Api application; an HTTP endpoint is a web address that accepts requests and returns data or performs an action.

In plain words
What is it for?
It helps define request and response data structures, write handlers, connect routes to the application's Minimal API, build the project, and add matching tests.
Why use it?
It provides a consistent process for adding routes while avoiding common mistakes such as returning database objects directly or skipping input checks.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit It helps define request and response data structures, write handlers, connect routes to the application's Minimal API, build the project, and add matching tests.

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Install with agentmods
npx agentmods add skills/cwoodruff/dotnet-claude-workshop-content/add-api-endpoint
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.

Any agent
npx skills add cwoodruff/dotnet-claude-workshop-content --skill add-api-endpoint
Clone the repo
git clone --depth 1 https://github.com/cwoodruff/dotnet-claude-workshop-content

Made for: Claude Code.

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 add-api-endpoint

README.md
[![agentmods](https://agentmods.dev/badge/skills/cwoodruff/dotnet-claude-workshop-content/add-api-endpoint.svg)](https://agentmods.dev/skills/cwoodruff/dotnet-claude-workshop-content/add-api-endpoint)
Your own site
<a href="https://agentmods.dev/skills/cwoodruff/dotnet-claude-workshop-content/add-api-endpoint"><img src="https://agentmods.dev/badge/skills/cwoodruff/dotnet-claude-workshop-content/add-api-endpoint.svg" alt="Measured on agentmods" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 187 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00063 $0.00187
Opus 5 $0.00032 $0.00093
Sonnet 5 $0.00013 $0.00037
Haiku 4.5 $0.00006 $0.00019

Measured 7d ago against content hash 8a1e98e33680, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

add-api-endpoint 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 7d 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.

src/c10/BookTracker/.claude/skills/add-api-endpoint/SKILL.md · 19 lines

What it actually says

Add an API endpoint

Procedure

  1. Read references/endpoint-pattern.md and an existing endpoint to match the house style.
  2. Define request/response DTOs in BookTracker.Core/Dtos.
  3. Add the handler and map the route in BookTracker.Api/Endpoints.
  4. Build, then add a test mirroring BookTracker.Tests.

Gotchas

  • Never return an EF entity — map to a DTO.
  • Validate inputs before touching the data layer.
  • Keep the handler thin; put logic in a Core service.
Files

What ships with it

1 file 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.

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. 7d ago First seen · 19 lines · 63 tokens per session scan A 8a1e98e33680

Subscribe to this mod's changes

add-api-endpoint is a skill published in the GitHub repository cwoodruff/dotnet-claude-workshop-content (2 stars, last pushed 1mo ago), licensed MIT. It adds 63 tokens to every session and 187 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 2026-08-31.

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