data-linkage

Map API response values to request parameters for endpoint linkage testing.

54|5|Updated May 9, 2026

Search Tags:#api #security testing #endpoint discovery #bug bounty #parameter linkage #response analysis

Ready to run

npx skills add https://github.com/jinyimeng01/mastermind-bug-bounty --skill data-linkage

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: data-linkage
Source: https://github.com/jinyimeng01/mastermind-bug-bounty/tree/main/skills/data_linkage
Command: npx skills add https://github.com/jinyimeng01/mastermind-bug-bounty --skill data-linkage

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill solves the problem of missing cross-endpoint relationships during API security testing by systematically linking discovered response values with required request parameters.

Core Features & Use Cases

Response-Driven Value Mapping: Extracts fields and values from API responses and builds reusable mappings between endpoints and parameters.
Automated Linkage Testing: Matches endpoint requirements with discovered values to construct chained test scenarios across APIs.
Use Case: Security testers can analyze authorized bug bounty targets by connecting user IDs, tokens, and other returned values to related API workflows for coverage analysis.

Quick Start

Use the data-linkage skill to analyze API responses and build parameter linkage mappings for the provided security testing dataset.

Frequently Asked Questions about data-linkage

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I map API response data to request parameters for security testing?▼

To map API response data to request parameters for security testing, you extract fields from responses, pool the values, and perform semantic matching to identify missing endpoint relationships. This process improves API test coverage.

What is API response chaining in endpoint discovery?▼

API response chaining in endpoint discovery is the technique of tracking iterative parameter linkage across API interactions. It maps returned values like user IDs or tokens to required request parameters to build chained test scenarios.

How do I improve bug bounty analysis coverage for authorized API targets?▼

You improve bug bounty analysis coverage by applying response-driven value mapping to connect discovered values to related API workflows. This systematic linkage testing identifies cross-endpoint relationships that manual testing often misses.

Can I use semantic matching to identify missing endpoint relationships in APIs?▼

Yes, semantic matching identifies missing endpoint relationships by aligning extracted response values with required request parameters across APIs. This automated matching constructs chained test scenarios for comprehensive security assessments.

What is the best way to track parameter linkage across iterative API interactions?▼

The best way to track parameter linkage across iterative API interactions is through response-driven testing workflows. This involves extracting parameters, pooling discovered values, and iteratively matching them to endpoint requirements.