Verify every claim from multiple independent angles -- code, docs, tests, git history. Use when you need high confidence that something is correct before acting on it.
From cross-checkernpx claudepluginhub a-ariff/ariff-claude-plugins --plugin cross-checkerThis skill uses the workspace's default tool permissions.
Fetches up-to-date documentation from Context7 for libraries and frameworks like React, Next.js, Prisma. Use for setup questions, API references, and code examples.
Retrieves current documentation, API references, and code examples for libraries, frameworks, SDKs, CLIs, and services via Context7 CLI. Ideal for API syntax, configs, migrations, and setup queries.
Uses ctx7 CLI to fetch current library docs, manage AI coding skills (install/search/generate), and configure Context7 MCP for AI editors.
Never trust a single source. Verify from at least two independent angles before accepting a claim as fact.
For any claim, check it against multiple sources:
Read the actual file. What does the code do? This is the strongest evidence.
What do the tests expect? Tests reveal intended behavior. If a test expects validateToken to return false for expired tokens, that's the designed behavior.
What was the original intent? Git blame and commit messages reveal why code was written. "commit abc123: fix token expiration check to reject tokens older than 24h"
README, comments, JSDoc, API docs. Do they match the code? If docs say one thing and code does another, the code is truth but the discrepancy matters.
Config files, environment variables, feature flags. Runtime behavior may differ from what the code looks like.
Package versions, API compatibility, deprecated features. A function might exist in the code but be broken due to a dependency update.
| Situation | Minimum angles needed |
|---|---|
| Stating a fact to the user | 1 (read the code) |
| Recommending a code change | 2 (code + tests or git history) |
| Security-related claims | 3 (code + tests + docs/config) |
| Production deployment advice | 3 (code + config + git history) |
| "This is safe to delete" | 3 (code + grep for references + tests) |