api

api is a skill for Claude Code from MingyiSecLab/Mingyi-Atlas. It costs 45 tokens per session (481 once invoked), scanned A, a copy of api-overview, Apache-2.0.

A routing guide for testing modern API protocols, including gRPC, SOAP, WebSockets, and Server-Sent Events. It explains how to recognize each protocol from its HTTP headers or message format.

In plain words
What is it for?
Use it to fingerprint API endpoints and direct testing to the matching gRPC, SOAP, WebSocket, or SSE guide.
Why use it?
It helps select the appropriate protocol-specific security checks when an API's technology is not immediately obvious.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to fingerprint API endpoints and direct testing to the matching gRPC, SOAP, WebSocket, or SSE guide.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mingyiseclab/mingyi-atlas/api
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 MingyiSecLab/Mingyi-Atlas --skill api
Clone the repo
git clone --depth 1 https://github.com/MingyiSecLab/Mingyi-Atlas

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 api

README.md
[![agentmods](https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/api/github.svg)](https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/api)
Your own site
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/api"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/api/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.

agentmods 80×15 button for api

Your own site · 80×15
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/api"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/api.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 481 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 97% 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 5.1 $0.00045 $0.00481
Opus 5 $0.00023 $0.00241
Sonnet 5 $0.00009 $0.00096
Haiku 4.5 $0.00005 $0.00048

Measured 9d ago against content hash 262f2def2925, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

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 9d 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.

curl -sk -I --http2 https://target/svc | grep -i 'application/grpc'
Origin

This is a copy

97% identical to api-overview — 2 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.

src/skills/standard/exploit/api/SKILL.md · 47 lines

What it actually says

Modern API Attack Category

This is a routing skill. Identify the API protocol then load the matching sub-skill.

Sub-skills

Protocol Sub-skill Wire signature
gRPC grpc HTTP/2 + `application/grpc[+proto
SOAP/WSDL soap-wsdl XML body in text/xml/application/soap+xml, ?wsdl discovery
WebSocket websocket HTTP Upgrade: websocket handshake, then framed binary/text
Server-Sent Events server-sent-events Content-Type: text/event-stream, one-way streaming

Quick fingerprint

# gRPC?
curl -sk -I --http2 https://target/svc | grep -i 'application/grpc'

# SOAP?
curl -sk "https://target/endpoint?wsdl" | head -1   # XML WSDL doc
curl -sk -X POST -H 'Content-Type: text/xml' https://target/endpoint   # 500 with SOAP fault

# WebSocket?
curl -sk -I -H "Connection: Upgrade" -H "Upgrade: websocket" https://target/ws | head -1
# 101 = WS upgrade

# SSE?
curl -sk -i https://target/stream -H "Accept: text/event-stream" | grep 'text/event-stream'

Sibling skills

For REST + GraphQL go to:

  • load_skill("/skills/standard/exploit/web/SKILL.md") — sub-skills graphql, idor, mass-assignment, etc.
Files

What ships with it

4 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.

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. 9d ago First seen · 47 lines · 45 tokens per session scan A 262f2def2925

Subscribe to this mod's changes

api is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 45 tokens to every session and 481 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 97% identical to api-overview, differing in 2 lines, and is treated as a copy.