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API Security Testing Workflow — measured AI agent skill | DecimalAI

davila7/api-security-testing

SkillScore68Maintained

API security testing workflow for REST and GraphQL APIs covering authentication, authorization, rate limiting, input validation, and security best practices.

Securityby davila7

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

Security & AppSec pack

decimalai skills pull davila7-api-security-testing

Get this skill — curl · raw file

curl -fsSL https://app.decimal.ai/s/davila7-api-security-testing/SKILL.md

Raw file: /s/davila7-api-security-testing/SKILL.md ↗ · machine-readable summary at /s/davila7-api-security-testing.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

22 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 2h ago

Yes — +27% lift0% tokens0% turns68% of whole cases pass with skill (15/22)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-07	✗→✓	▲ Improved	-22%	0%
case-09	✗→✓	▲ Improved	10%	0%
case-10	✗→✓	▲ Improved	6%	0%
case-13	✗→✓	▲ Improved	0%	0%
case-16	✗→✓	▲ Improved	-54%	0%

Showing 5 of 22 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

davila7 / claude-code-templates

cli-tool/components/skills/security/api-security-testing/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

Skill contents

SKILL.md

API Security Testing Workflow

Overview

Specialized workflow for testing REST and GraphQL API security including authentication, authorization, rate limiting, input validation, and API-specific vulnerabilities.

When to Use This Workflow

Use this workflow when:

Testing REST API security
Assessing GraphQL endpoints
Validating API authentication
Testing API rate limiting
Bug bounty API testing

Workflow Phases

Phase 1: API Discovery

Skills to Invoke

api-fuzzing-bug-bounty - API fuzzing
scanning-tools - API scanning

Actions

Enumerate endpoints
Document API methods
Identify parameters
Map data flows
Review documentation

Copy-Paste Prompts

Use @api-fuzzing-bug-bounty to discover API endpoints

Phase 2: Authentication Testing

Skills to Invoke

broken-authentication - Auth testing
api-security-best-practices - API auth

Actions

Test API key validation
Test JWT tokens
Test OAuth2 flows
Test token expiration
Test refresh tokens

Copy-Paste Prompts

Use @broken-authentication to test API authentication

Phase 3: Authorization Testing

Skills to Invoke

idor-testing - IDOR testing

Actions

Test object-level authorization
Test function-level authorization
Test role-based access
Test privilege escalation
Test multi-tenant isolation

Copy-Paste Prompts

Use @idor-testing to test API authorization

Phase 4: Input Validation

Skills to Invoke

api-fuzzing-bug-bounty - API fuzzing
sql-injection-testing - Injection testing

Actions

Test parameter validation
Test SQL injection
Test NoSQL injection
Test command injection
Test XXE injection

Copy-Paste Prompts

Use @api-fuzzing-bug-bounty to fuzz API parameters

Phase 5: Rate Limiting

Skills to Invoke

api-security-best-practices - Rate limiting

Actions

Test rate limit headers
Test brute force protection
Test resource exhaustion
Test bypass techniques
Document limitations

Copy-Paste Prompts

Use @api-security-best-practices to test rate limiting

Phase 6: GraphQL Testing

Skills to Invoke

api-fuzzing-bug-bounty - GraphQL fuzzing

Actions

Test introspection
Test query depth
Test query complexity
Test batch queries
Test field suggestions

Copy-Paste Prompts

Use @api-fuzzing-bug-bounty to test GraphQL security

Phase 7: Error Handling

Skills to Invoke

api-security-best-practices - Error handling

Actions

Test error messages
Check information disclosure
Test stack traces
Verify logging
Document findings

Copy-Paste Prompts

Use @api-security-best-practices to audit API error handling

API Security Checklist

] Authentication working
] Authorization enforced
] Input validated
] Rate limiting active
] Errors sanitized
] Logging enabled
] CORS configured
] HTTPS enforced

Quality Gates

] All endpoints tested
] Vulnerabilities documented
] Remediation provided
] Report generated

Related Workflow Bundles

security-audit - Security auditing
web-security-testing - Web security
api-development - API development

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Other measured skills in the registry, with their headline benchmark lift.

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davila7/api-security-testing

SkillSafety

Source

API Security Testing Workflow

Overview

When to Use This Workflow

Workflow Phases

Phase 1: API Discovery

Skills to Invoke

Actions

Copy-Paste Prompts

Phase 2: Authentication Testing

Skills to Invoke

Actions

Copy-Paste Prompts

Phase 3: Authorization Testing

Skills to Invoke

Actions

Copy-Paste Prompts

Phase 4: Input Validation

Skills to Invoke

Actions

Copy-Paste Prompts

Phase 5: Rate Limiting

Skills to Invoke

Actions

Copy-Paste Prompts

Phase 6: GraphQL Testing

Skills to Invoke

Actions

Copy-Paste Prompts

Phase 7: Error Handling

Skills to Invoke

Actions

Copy-Paste Prompts

API Security Checklist

Quality Gates

Related Workflow Bundles

Related skills