gud-api

gud-api is a skill for Claude Code, Codex from gudlab/gud-api-mcp. It costs 109 tokens per session (891 once invoked), scanned A, original, no licence file.

A workflow for building and testing HTTP/REST APIs, which let programs exchange requests and responses over the web, using the Gud API MCP server.

In plain words
What is it for?
Use it to register API endpoints, run requests, record responses, and keep a clickable collection of requests in version control.
Why use it?
It keeps API requests as saved, reusable records instead of leaving one-off terminal commands that are hard to share or repeat.

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/gudlab/gud-api-mcp/gud-api
Any agent
npx skills add gudlab/gud-api-mcp --skill gud-api
Clone the repo
git clone --depth 1 https://github.com/gudlab/gud-api-mcp

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 gud-api

README.md
[![agentmods](https://agentmods.dev/badge/skills/gudlab/gud-api-mcp/gud-api.svg)](https://agentmods.dev/skills/gudlab/gud-api-mcp/gud-api)
Your own site
<a href="https://agentmods.dev/skills/gudlab/gud-api-mcp/gud-api"><img src="https://agentmods.dev/badge/skills/gudlab/gud-api-mcp/gud-api.svg" alt="Measured on agentmods" height="20"></a>
Per session 109 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 891 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00109 $0.00891
Opus 5 $0.00055 $0.00445
Sonnet 5 $0.00022 $0.00178
Haiku 4.5 $0.00011 $0.00089

Measured 4d ago against content hash e207e103d074, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

gud-api scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

the Gud API MCP server (@gudlab/gud-api-mcp) connected. Instead of throwaway curl
skill/gud-api/SKILL.md · 84 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 84 lines · 109 tokens per session scan A e207e103d074

Subscribe to this mod's changes

gud-api is a skill published in the GitHub repository gudlab/gud-api-mcp (0 stars, last pushed 1mo ago), with no licence file. It adds 109 tokens to every session and 891 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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