> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.markup.ai/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.markup.ai/_mcp/server.

# Source Authority

> Give every claim a source AI search trusts.

**AI Visibility**

**Give every claim a source AI search trusts.** This agent finds statements that lack the credibility signals AI search engines look for.

*Part of Markup AI's AI-search optimization suite — GEO/AEO (generative / answer engine optimization) for visibility in ChatGPT, Perplexity, and Google AI Overviews.*

## What it catches

Unattributed statistics, vague research references, and unnamed experts — the kind of content AI-powered search treats as low-trust. Writers get a list of exactly where to add citations or attribution. The [Claims](/agents/generic-claims) covers the complementary problem: risky, unsubstantiated assertions.

## Why it matters

Credibility signals are ranking signals now. Named sources and real citations are what separate content that gets cited from content that gets ignored.

#### [Markup AI for Google Docs](/apps/google-docs)

The fastest way to use this agent: catch and fix issues right inside Google Docs, with the Markup AI Chrome Extension.

#### [Use it in your AI assistant](/mcp)

Available on Markup AI's hosted MCP server as `source_authority` — or ask for a review and let Markup AI select it.

#### [Run it via the API](/developer/agents/source-authority)

Resolve the agent by name and run it with one call — full examples in the Agent Reference.