# Corank AI Answer Evidence Research Aids

> Open, browser-readable methods and utilities for human-reviewed AI-answer evidence, source-role coverage, URL normalization, local-service observation, and tool evaluation. Published by Corank; no ranking, citation, traffic, accuracy, or influence outcome is promised.

Use each method within its stated boundaries. Synthetic examples are demonstrations, not measured brand performance. AI answers vary by time, product surface, market, model, and personalization. Preserve raw observations before applying any transformation or score.

## Core methods

- [AI Answer Evidence Observation Ledger](https://corank-prompt-source-gap-triage.pages.dev/ai-answer-evidence-ledger/index.md): General CSV templates and JSON Schema for occurrence-level, human-reviewed AI-answer citation observations.
- [AI Answer Source-Role Taxonomy](https://corank-prompt-source-gap-triage.pages.dev/ai-answer-source-role-taxonomy/index.md): Versioned definitions and annotation rules for entity, definition, evidence, comparison, implementation, validation, and action roles.
- [Citation URL Normalization Protocol](https://corank-prompt-source-gap-triage.pages.dev/citation-url-normalization-protocol/): Conservative rules for comparison keys that preserve exact observed URLs and separate later network verification.
- [Local-Service Source-Role Audit](https://corank-prompt-source-gap-triage.pages.dev/local-service-source-role-audit/): A worked audit protocol for local service businesses, with regulated-topic limitations.
- [Local-Service Observation Ledger](https://corank-prompt-source-gap-triage.pages.dev/local-service-observation-ledger/): Codebook, CSV template, and JSON Schema for dated human observations.

## Utilities

- [Prompt–Source Gap Triage](https://corank-prompt-source-gap-triage.pages.dev/): A client-side planning tool that turns a frozen prompt set and observed roles into a transparent gap queue.
- [AI Answer Evidence Ledger Validator](https://corank-prompt-source-gap-triage.pages.dev/ai-answer-evidence-ledger-validator/): A browser-only structural and consistency validator for the version 1.0 observation-ledger CSV format.
- [AI Citation URL Normalizer](https://corank-prompt-source-gap-triage.pages.dev/ai-citation-url-normalizer/): A browser utility for grouping conservative URL comparison keys and checking publisher concentration.
- [AI Visibility Tool Evaluation Scorecard](https://corank-prompt-source-gap-triage.pages.dev/ai-visibility-tool-evaluation-scorecard/): A framework for evaluating whether a reporting tool preserves evidence and reproducibility.

## About

- [Corank](https://corank.ai/): AI visibility measurement and search optimization resources.