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 Bilal140202/the-lord-of-the-skills --skill kbwen__agentic-osgit clone --depth 1 https://github.com/Bilal140202/the-lord-of-the-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/bilal140202/the-lord-of-the-skills/kbwen__agentic-os)<a href="https://agentmods.dev/skills/bilal140202/the-lord-of-the-skills/kbwen__agentic-os"><img src="https://agentmods.dev/badge/skills/bilal140202/the-lord-of-the-skills/kbwen__agentic-os/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/bilal140202/the-lord-of-the-skills/kbwen__agentic-os"><img src="https://agentmods.dev/badge/skills/bilal140202/the-lord-of-the-skills/kbwen__agentic-os.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00000 | $0.01045 |
| Opus 5 | $0.00000 | $0.00522 |
| Sonnet 5 | $0.00000 | $0.00209 |
| Haiku 4.5 | $0.00000 | $0.00104 |
Grade A, and why
KbWen__agentic-os 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 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.
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.
This is a copy
91% identical to api-design — 9 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.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
API Design
When to Apply
- Classification: feature, architecture-change, hotfix (if touching API endpoints)
- Phase: /implement (design & build), /review (compliance check), /test (contract verification)
- Trigger: Task involves creating, modifying, or deprecating API endpoints
Conventions
Customize after /app-init: Replace these generic conventions with your project's ADR decisions.
Endpoint Naming
- Use nouns for resources, not verbs:
GET /usersnotGET /getUsers - Plural resource names:
/users,/orders,/products - Nested resources for relationships:
/users/:id/orders - Use kebab-case for multi-word paths:
/order-items
HTTP Methods
| Action | Method | Success Status | Idempotent |
|---|---|---|---|
| List | GET | 200 | Yes |
| Get one | GET | 200 | Yes |
| Create | POST | 201 | No |
| Full update | PUT | 200 | Yes |
| Partial update | PATCH | 200 | No |
| Delete | DELETE | 204 | Yes |
Error Response Format
{
"error": {
"code": "VALIDATION_ERROR",
"message": "Email is required",
"details": {
"field": "email",
"constraint": "required"
}
}
}
Standard Error Codes
| HTTP Status | When | Error Code Pattern |
|---|---|---|
| 400 | Invalid input | VALIDATION_ERROR, INVALID_FORMAT |
| 401 | Not authenticated | UNAUTHORIZED |
| 403 | Not permitted | FORBIDDEN |
| 404 | Resource not found | NOT_FOUND |
| 409 | Conflict (duplicate) | CONFLICT, DUPLICATE |
| 422 | Business rule violation | UNPROCESSABLE |
| 429 | Rate limited | RATE_LIMITED |
| 500 | Server error | INTERNAL_ERROR |
Pagination
{
"data": [...],
"pagination": {
"total": 100,
"page": 1,
"per_page": 20,
"has_next": true
}
}
Versioning
- URL path versioning:
/api/v1/users - Breaking changes require new version
- Deprecation: add
Sunsetheader with date, keep old version for N months
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.
- 9d ago First seen · 124 lines · 0 tokens per session scan A e24f19bca036
KbWen__agentic-os is a skill published in the GitHub repository Bilal140202/the-lord-of-the-skills (4 stars, last pushed 6d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,045 tokens. A static security scan graded it A with 0 findings. It is 91% identical to api-design, differing in 9 lines, and is treated as a copy.
Other skills, from other repositories
hunt-auth-bypass
Hunting skill for auth bypass vulnerabilities. Built from 4 public bug bounty reports. Use when hunting auth bypass on any target.
hunt-xxe
Hunting skill for xxe vulnerabilities. Built from 4 public bug bounty reports. Use when hunting xxe on any target.
hunt-graphql
Hunting skill for graphql vulnerabilities. Built from 3 public bug bounty reports. Use when hunting graphql on any target.
hunt-idor
Hunting skill for idor vulnerabilities. Built from 26 public bug bounty reports. Use when hunting idor on any target.
hunt-http-smuggling
Hunt HTTP request smuggling (CL.TE, TE.CL, H2.CL, H2.TE). Cause: front-end proxy and back-end server disagree on where one request ends and the next begins (Content-Length vs Transfer-Encoding header parsing inconsistency). CL.TE: front-end uses CL, back uses TE → smuggle by sending TE: chunked but with body that fits…
hunt-api-misconfig
Hunt API security misconfiguration — mass assignment, JWT attacks, prototype pollution, CORS, HTTP verb tampering. Mass assignment: send {isadmin:true, role:admin, verified:true} on profile/account/reset endpoints — server blindly applies. JWT: alg=none, weak HMAC bruteforce, kid path traversal, JWK injection, token…