CtrlK
BlogDocsLog inGet started
Tessl Logo

idor-testing

Provide systematic methodologies for identifying and exploiting Insecure Direct Object Reference (IDOR) vulnerabilities in web applications.

47

Quality

49%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./plugins/AI-Agents-Safe-Coding-Skills/skills/idor-testing/SKILL.md

The canonical home for this skill is idor-testing in administrakt0r/AI-Agents-Safe-Coding-Skills

SKILL.md
Quality
Evals
Security

Quality

Content

46%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The skill provides comprehensive IDOR testing coverage with good concrete examples of HTTP request manipulation and remediation code, but suffers from significant verbosity—explaining concepts Claude already knows (HTTP status codes, what IDOR is, basic parameter types) and inlining reference material that should be in separate files. The workflow lacks explicit validation checkpoints for verifying test results and ensuring no unintended impact, which is critical for security testing operations.

Suggestions

Remove explanatory content Claude already knows (IDOR definitions, HTTP status code meanings, what database objects are) and focus only on the specific testing methodology and decision points.

Add explicit validation checkpoints to the workflow: verify findings with the victim account, confirm no data corruption occurred, and document evidence before proceeding to the next test.

Split reference tables (common parameters, API endpoints, response analysis) into a separate REFERENCE.md file and the troubleshooting section into TROUBLESHOOTING.md, keeping SKILL.md as a concise workflow overview.

Remove the 'When to Use' section which adds no value, and consolidate the 5 examples down to 2-3 that demonstrate distinct patterns rather than variations of the same technique.

DimensionReasoningScore

Conciseness

Significantly verbose with extensive explanations of concepts Claude already understands (what IDOR is, what status codes mean, basic HTTP methods). The 'Purpose' section restates the description, the vulnerability type explanations are unnecessary for Claude, and the common vulnerable parameters/locations tables are general knowledge. The content could be cut by 40-50% without losing actionable value.

2 / 5

Actionability

Provides concrete HTTP request examples, Burp Suite configuration steps, and executable Python remediation code. The detection techniques show specific request/response patterns. However, most examples are illustrative rather than truly copy-paste executable (they're HTTP snippets showing concepts rather than runnable scripts), and the Burp Suite steps are procedural descriptions rather than executable commands.

4 / 5

Workflow Clarity

The workflow follows a logical sequence (reconnaissance → detection → exploitation → remediation) with numbered steps. However, there are no explicit validation checkpoints or feedback loops for verifying findings. For a security testing workflow involving potentially destructive operations (address modification examples), the lack of verification steps ('confirm the original data is unchanged,' 'validate your test didn't corrupt production data') caps this at 3 per the rubric's destructive operations rule.

3 / 5

Progressive Disclosure

The content is a monolithic ~300-line document with no references to external files. The extensive tables of common parameters, API endpoints, troubleshooting scenarios, and remediation examples would benefit greatly from being split into separate reference files. Everything is inlined with no bundle structure to support it.

2 / 5

Total

11

/

20

Passed

Description

53%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description clearly identifies a specific security domain (IDOR vulnerabilities) and states the high-level purpose, but it lacks a 'Use when...' clause, specific sub-actions or techniques, and natural trigger terms users might employ. It is functional but would benefit from more concrete detail and explicit trigger guidance to reliably differentiate it from broader security testing skills.

Suggestions

Add a 'Use when...' clause with trigger phrases like 'when the user asks about IDOR, access control testing, authorization bypass, parameter manipulation, or broken object-level authorization'.

Include more specific actions such as 'enumerate object references, test horizontal/vertical privilege escalation, analyze API endpoints for predictable IDs, and validate access control enforcement'.

Add natural synonyms and related terms users might say, such as 'broken access control', 'authorization testing', 'API security', 'parameter tampering', or 'BOLA'.

DimensionReasoningScore

Specificity

Names the domain (IDOR vulnerabilities in web applications) and describes two concrete actions (identifying and exploiting), but lacks detail on specific techniques, tools, or outputs involved in the methodology.

3 / 5

Completeness

Has a clear 'what' (systematic methodologies for identifying and exploiting IDOR vulnerabilities) but completely lacks a 'when' clause or explicit trigger guidance for when Claude should select this skill.

3 / 5

Trigger Term Quality

Includes key terms like 'IDOR', 'Insecure Direct Object Reference', and 'web applications', but misses natural user phrases like 'access control', 'authorization bypass', 'parameter tampering', 'broken access control', or 'API security testing'.

3 / 5

Distinctiveness Conflict Risk

IDOR is a specific vulnerability class, making it fairly distinct from general web security or other vulnerability-specific skills. However, it could overlap with broader web application security testing or penetration testing skills.

4 / 5

Total

13

/

20

Passed

Validation

90%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

10

/

11

Passed

Repository
administrakt0r/AI-Agents-Safe-Coding-Skills
Reviewed

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.