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Check a document for hidden text before your agent reads it. PDF, Office, RTF, HTML.
HiddenContent is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 78/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding HiddenContent to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
mcp add ai.hiddencontent/mcp https://api.hiddencontent.ai/v1/mcpReview the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-09-27T19:54:31.627668Z",
"publishedAt": "2026-09-27T19:54:31.627668Z",
"statusChangedAt": "2026-09-27T19:54:31.627668Z"
}
},
"server": {
"name": "ai.hiddencontent/mcp",
"title": "HiddenContent",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://api.hiddencontent.ai/v1/mcp",
"type": "streamable-http"
}
],
"version": "0.4.15",
"packages": [
{
"version": "0.4.15",
"transport": {
"type": "stdio"
},
"identifier": "@hiddencontent/mcp",
"registryType": "npm",
"environmentVariables": [
{
"name": "HCS_API_TOKEN",
"isSecret": true,
"isRequired": true,
"description": "API token for the HiddenContent service. Get one at https://hiddencontent.ai/start?ref=mcp-registry — the server refuses to start without it and says so."
},
{
"name": "HCS_URL",
"description": "Base URL of the service. Defaults to the hosted API; set it only when pointing at a self-hosted instance."
},
{
"name": "HCS_CAPABILITIES",
"description": "Comma-separated list of what your agent can actually do. The only accepted values are `tool-use`, `network-egress` and `code-execution`. These turn on the checks for concealed text that instructs a model to call a tool, send data or run code — declaring more can raise severity and never lowers it, and declaring nothing leaves those checks inert. Defaults to `tool-use` in the bundle install."
}
]
},
{
"transport": {
"type": "stdio"
},
"fileSha256": "b206ded6795cf40f367a4ab7617a0b9fdfa1bdf46b7d40d3ac784c91eaef3005",
"identifier": "https://github.com/AeroSpark-ai/hiddencontent-mcp/releases/download/v0.4.15/hiddencontent.mcpb",
"registryType": "mcpb",
"environmentVariables": [
{
"name": "HCS_API_TOKEN",
"isSecret": true,
"isRequired": true,
"description": "API token for the HiddenContent service. Get one at https://hiddencontent.ai/start?ref=mcp-registry — the server refuses to start without it and says so."
},
{
"name": "HCS_URL",
"description": "Base URL of the service. Defaults to the hosted API; set it only when pointing at a self-hosted instance."
},
{
"name": "HCS_CAPABILITIES",
"description": "Comma-separated list of what your agent can actually do. The only accepted values are `tool-use`, `network-egress` and `code-execution`. These turn on the checks for concealed text that instructs a model to call a tool, send data or run code — declaring more can raise severity and never lowers it, and declaring nothing leaves those checks inert. Defaults to `tool-use` in the bundle install."
}
]
}
],
"repository": {
"url": "https://github.com/AeroSpark-ai/hidden-content-service",
"source": "github",
"subfolder": "packages/mcp"
},
"websiteUrl": "https://hiddencontent.ai/start?ref=mcp-registry",
"description": "Check a document for hidden text before your agent reads it. PDF, Office, RTF, HTML."
}
}