OpenClaw Master Skills is a curated, regularly updated collection of skills that extends an AI personal assistant platform with capabilities such as research, browser automation, presentation creation, and prompt work. It is intended for people using OpenClaw or MyClaw.ai to give their agents additional tasks and workflows. The catalogue contains many skills and agents from this collection.
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.
npx skills add LeoYeAI/openclaw-master-skills --skill afrexai-api-architectgit clone --depth 1 https://github.com/LeoYeAI/openclaw-master-skillsWrote 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.
[](https://agentmods.dev/skills/leoyeai/openclaw-master-skills/afrexai-api-architect)<a href="https://agentmods.dev/skills/leoyeai/openclaw-master-skills/afrexai-api-architect"><img src="https://agentmods.dev/badge/skills/leoyeai/openclaw-master-skills/afrexai-api-architect/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.
<a href="https://agentmods.dev/skills/leoyeai/openclaw-master-skills/afrexai-api-architect"><img src="https://agentmods.dev/badge/skills/leoyeai/openclaw-master-skills/afrexai-api-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Tool Misuse · line 524 Tool calls are chained to bypass individual safety checks or escalate capabilities beyond what any single tool call would allow.Fix: Limit tool chaining depth and validate the output of each tool before passing it to the next. Require explicit user approval for multi-step chains.
- medium Data Exfiltration · line 209 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 484 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 663 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 480 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00061 | $0.06975 |
| Opus 5 | $0.00030 | $0.03488 |
| Sonnet 5 | $0.00012 | $0.01395 |
| Haiku 4.5 | $0.00006 | $0.00698 |
Grade A, and why
afrexai-api-architect 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
Design, build, test, document, secure, and monitor production-grade APIs. Not just curl commands — a complete engineering methodology. How it starts
The opening of the file, as written. The whole thing — 923 lines — stays where its author put it; the contents beside it link to each section on GitHub.
API Architect — Full Lifecycle API Development
Design, build, test, document, secure, and monitor production-grade APIs. Not just curl commands — a complete engineering methodology.
When to Use
- Designing a new API (REST, GraphQL, or gRPC)
- Reviewing an existing API for quality, consistency, or security
- Generating or validating OpenAPI/Swagger specs
- Building comprehensive test suites (unit, integration, contract, load)
- Debugging production API issues
- Planning API versioning and deprecation
- Setting up monitoring, rate limiting, and error handling
Phase 1: API Design
Design-First Approach
Always design before coding. The spec IS the contract.
Resource Modeling
Map your domain to resources using this template:
# api-design.yaml
service: order-management
base_path: /api/v1
resources:
- name: orders
path: /orders
description: Customer purchase orders
identifier: order_id (UUID)
parent: null
operations: [list, create, get, update, cancel]
sub_resources:
- name: line_items
path: /orders/{order_id}/items
operations: [list, add, update, remove]
- name: payments
path: /orders/{order_id}/payments
operations: [list, create, get, refund]
states: [draft, confirmed, processing, shipped, delivered, cancelled]
transitions:
- from: draft → to: confirmed (action: confirm)
- from: confirmed → to: processing (action: process)
- from: processing → to: shipped (action: ship)
- from: shipped → to: delivered (action: deliver)
- from: [draft, confirmed] → to: cancelled (action: cancel)
Naming Conventions Checklist
| Rule | Good | Bad |
|---|---|---|
| Plural nouns for collections | /users |
/user, /getUsers |
| Kebab-case for multi-word | /line-items |
/lineItems, /line_items |
| No verbs in URLs | POST /orders |
/createOrder |
| Nest for ownership | /users/123/orders |
/orders?user=123 (for primary relationship) |
| Max 3 levels deep | /users/123/orders |
/users/123/orders/456/items/789/options |
| Filter via query params | /orders?status=active |
/active-orders |
| Actions as sub-resource | POST /orders/123/cancel |
PATCH /orders/123 {cancelled:true} |
What ships with it
2 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.
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.
- 7d ago First seen · 923 lines · 61 tokens per session scan A 4e053d54eb73
afrexai-api-architect is a skill published in the GitHub repository LeoYeAI/openclaw-master-skills (2,139 stars, last pushed 1mo ago), licensed MIT. It adds 61 tokens to every session and 6,975 once invoked, about $0.0003 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 2026-09-03.
Other skills, from other repositories
api-tester
API testing expert for curl, REST, GraphQL, authentication, and debugging.
api-testing
Test REST and GraphQL APIs with Playwright APIRequestContext, Supertest, or standalone HTTP clients. Covers schema validation with Zod 4/AJV, auth flow testing, CRUD lifecycle tests, error and header validation, pagination, and performance assertions. Use when: "API test," "endpoint test," "REST test," "GraphQL test,"…
api-test-suite-builder
Use when the user asks to generate API tests, create integration test suites, test REST endpoints, or build contract tests.
api-test-patterns
Write comprehensive API tests for REST and GraphQL endpoints. Use this skill when testing APIs, writing contract tests, or validating integrations. Activate when: api testing, REST test, GraphQL test, endpoint testing, integration test, postman, contract testing.
web-api-tester
Test API endpoints for correctness, edge cases, auth handling, and OpenAPI contract compliance.
api-testing-observability-api-mock
You are an API mocking expert specializing in realistic mock services for development, testing, and demos. Design mocks that simulate real API behavior and enable parallel development.