Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/PramodDutta/qaskillsnpx agentmods add skills/pramoddutta/qaskills/api-security-testingWrote 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/pramoddutta/qaskills/api-security-testing)<a href="https://agentmods.dev/skills/pramoddutta/qaskills/api-security-testing"><img src="https://agentmods.dev/badge/skills/pramoddutta/qaskills/api-security-testing/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/pramoddutta/qaskills/api-security-testing"><img src="https://agentmods.dev/badge/skills/pramoddutta/qaskills/api-security-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00046 | $0.04961 |
| Opus 5.5 | $0.00018 | $0.01984 |
| Sonnet 5.5 | $0.00009 | $0.00992 |
| Haiku 4.5 | $0.00005 | $0.00496 |
Grade A, and why
API Security Testing 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 1mo 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.
const response = await fetch(BASE_URL, { How it starts
The opening of the file, as written. The whole thing — 569 lines — stays where its author put it; the contents beside it link to each section on GitHub.
API Security Testing Skill
You are an expert in API security testing. When the user asks you to test API security, implement OWASP API Top 10 checks, detect authentication and authorization vulnerabilities, or set up automated security scanning, follow these detailed instructions.
Core Principles
- OWASP API Security Top 10 coverage -- Every API security test suite must cover all 10 categories from the OWASP API Security Top 10 list, adapted to the specific API being tested.
- Authentication before authorization -- Test authentication mechanisms first (token validation, session management, credential handling), then test authorization (access control, privilege escalation).
- Broken Object Level Authorization (BOLA) -- The most critical API vulnerability. Test that every endpoint verifies the requesting user has access to the specific resource being requested.
- Input validation at every boundary -- Test all input vectors: path parameters, query strings, headers, request bodies, and file uploads for injection, overflow, and type confusion attacks.
- Rate limiting and resource exhaustion -- Verify that APIs implement rate limiting, request size limits, and pagination caps to prevent denial-of-service attacks.
- Sensitive data exposure -- Verify that APIs do not leak sensitive information in responses, error messages, headers, or logs.
- Automated scanning plus manual testing -- Automated tools catch common vulnerabilities. Manual testing catches business logic flaws. Both are required.
Project Structure
security-tests/
owasp/
bola.test.ts
broken-auth.test.ts
broken-object-property.test.ts
unrestricted-resource.test.ts
broken-function-level-auth.test.ts
mass-assignment.test.ts
ssrf.test.ts
security-misconfiguration.test.ts
improper-inventory.test.ts
unsafe-api-consumption.test.ts
auth/
token-validation.test.ts
session-management.test.ts
credential-handling.test.ts
oauth-flow.test.ts
injection/
sql-injection.test.ts
nosql-injection.test.ts
command-injection.test.ts
xss-injection.test.ts
header-injection.test.ts
rate-limiting/
rate-limit.test.ts
resource-exhaustion.test.ts
helpers/
api-client.ts
token-generator.ts
payload-generator.ts
vulnerability-reporter.ts
config/
security-config.ts
endpoints.ts
reports/
.gitkeep
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.
- 1mo ago First seen · 569 lines · 46 tokens per session scan A bc9184e53801
API Security Testing is a skill published in the GitHub repository PramodDutta/qaskills (237 stars, last pushed 6d ago), licensed MIT. It adds 46 tokens to every session and 4,961 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.
Other skills, from other repositories
exploiting-broken-function-level-authorization
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testing-api-for-broken-object-level-authorization
Tests REST and GraphQL APIs for Broken Object Level Authorization (BOLA/IDOR) vulnerabilities where an authenticated user can access or modify resources belonging to other users by manipulating object identifiers in API requests. The tester intercepts API calls, identifies object ID parameters (numeric IDs, UUIDs…
detecting-api-enumeration-attacks
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exploiting-api-injection-vulnerabilities
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testing-api-for-broken-object-level-authorization
Tests REST and GraphQL APIs for Broken Object Level Authorization (BOLA/IDOR) vulnerabilities where an authenticated user can access or modify resources belonging to other users by manipulating object identifiers in API requests. The tester intercepts API calls, identifies object ID parameters (numeric IDs, UUIDs…
security-hardening
Use when writing code that handles user input, auth, sessions, or external data. Covers OWASP prevention patterns. Do NOT use for general code quality or performance — see dedicated skills.