# HiddenContent (slim)

> HiddenContent, an MCP server by hiddencontent.ai, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Check a document for hidden text before your agent reads it. PDF, Office, RTF, HTML.

- Full: https://www.anchorterminal.com/tools/hiddencontent-mcp.md (~550 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/tools/hiddencontent-mcp.json · canonical https://www.anchorterminal.com/tools/hiddencontent-mcp
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

# HiddenContent

> Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: MCP server, by hiddencontent.ai (https://hiddencontent.ai/start?ref=mcp-registry)
- Category: PDF tools (https://www.anchorterminal.com/categories/pdf-tools.md)
- Listed because: It's published in the registry under hiddencontent.ai, a namespace the registry only gives to whoever proves they control that domain.
- What the official MCP registry says: Check a document for hidden text before your agent reads it. PDF, Office, RTF, HTML.

## Facts

- MCP registry: `ai.hiddencontent/mcp` 0.4.15
- Endpoint: https://api.hiddencontent.ai/v1/mcp (streamable HTTP)
- Package: npm `@hiddencontent/mcp` (stdio)
- Package: mcpb `https://github.com/AeroSpark-ai/hiddencontent-mcp/releases/download/v0.4.15/hiddencontent.mcpb` (stdio)
- Source: https://github.com/AeroSpark-ai/hidden-content-service
- Website: https://hiddencontent.ai/start?ref=mcp-registry
- npm downloads a week: 268
- Registry entry updated: 2026-09-27

## Tools

- Tools: the endpoint asks for credentials before listing them (checked 2026-10-04 22:20 UTC)

- JSON: https://www.anchorterminal.com/api/v1/tools/hiddencontent-mcp.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming