add-endpoint

add-endpoint is a skill for Claude Code, Codex from cwoodruff/dotnet-claude-code-kit. It costs 41 tokens per session (391 once invoked), scanned A, a copy of add-endpoint, MIT.

A guided way to add a Minimal API endpoint, which is a small ASP.NET Core HTTP route, while following the solution's existing patterns for requests, responses, validation, database access, and tests.

In plain words
What is it for?
Use it to add a GET, POST, PUT, or DELETE operation end to end, including any required service or repository code and integration tests.
Why use it?
It reduces the chance of inconsistent routes, incorrect status codes, missing validation, leaked database entities, or incomplete data wiring.

Skill for Claude CodeCodex

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

Made for: Claude Code, Codex.

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-endpoint

README.md
[![agentmods](https://agentmods.dev/badge/skills/cwoodruff/dotnet-claude-code-kit/add-endpoint.svg)](https://agentmods.dev/skills/cwoodruff/dotnet-claude-code-kit/add-endpoint)
Your own site
<a href="https://agentmods.dev/skills/cwoodruff/dotnet-claude-code-kit/add-endpoint"><img src="https://agentmods.dev/badge/skills/cwoodruff/dotnet-claude-code-kit/add-endpoint.svg" alt="Measured on agentmods" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 391 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00041 $0.00391
Opus 5 $0.00020 $0.00196
Sonnet 5 $0.00008 $0.00078
Haiku 4.5 $0.00004 $0.00039

Measured 4d ago against content hash c1ee239bfccd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

add-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 4d 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.

Origin

This is a copy

100% identical to add-endpoint — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/add-endpoint/SKILL.md · 23 lines

What it actually says

Add a Minimal API Endpoint

Task: implement $ARGUMENTS end to end.

  1. Read the neighborhood first. Open the existing endpoint group for this resource (or the closest one) and mirror its structure exactly: MapGroup usage, TypedResults unions, DTO records, DI parameters.
  2. Define contracts. Request/response DTOs as record types. Never expose EF entities.
  3. Wire the data path. If a needed repository/service method doesn't exist, add the interface method in Core, implement it in Data with async EF Core + CancellationToken, and register it if new.
  4. Implement the endpoint with:
    • TypedResults union return type
    • Input validation before any database call, returning ValidationProblem on failure
    • Correct status codes (201 + Location on create via CreatedAtRoute/Created, 204 on delete, 404 on missing)
    • CancellationToken threaded through
    • Structured logging for failures only (don't log every request)
  5. Write tests in the Tests project: at least one happy path and one failure path per endpoint, named MethodName_Scenario_ExpectedResult. Use WebApplicationFactory<Program> for integration coverage.
  6. Verify. dotnet build --nologo then dotnet test --nologo --filter scoped to the new tests. Report results.
  7. Summarize the new route, its status codes, and any follow-ups (auth, pagination, caching) you deliberately left out.
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. 4d ago First seen · 23 lines · 41 tokens per session scan A c1ee239bfccd

Subscribe to this mod's changes

add-endpoint is a skill published in the GitHub repository cwoodruff/dotnet-claude-code-kit (2 stars, last pushed 1mo ago), licensed MIT. It adds 41 tokens to every session and 391 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to add-endpoint, differing in 0 lines, and is treated as a copy.

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