Archives and files

File type detector for AI agents

Identifies a file’s real type from its contents, not its name.

utilities.file_mime_type_detector

What it does

Identifies a file’s real type from its contents, not its name. It is one of the Archives and files tools in the Ahura Utilities catalogue: a ready-made MCP tool that an agent calls with a typed input and gets a structured result back, with no library to install and no sandbox to start.

How agents use it

Agents use file type detector to check untrusted uploads before processing them. Because it is a plain tool call, it slots into a single agent turn or a step in an Ahura Workflow, and large inputs and outputs are passed by reference using a store:// address from Ahura Store.

Interactive simulation

Run file type detector

Press Run to send the call. The dashboard shows what it would use in a partition. Simulated: nothing is actually executed.

ahura mcp · ptn_demo_7f3a

# Check untrusted uploads before processing them.

→ POST /mcp

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "utilities.file_mime_type_detector",
    "arguments": {
      "source": "store://files/upload-1"
    }
  }
}

Ready. Press Run.

ptn_demo_7f3a

Partition · N. Virginia · created just now

Simulated

Activeus-eastRetention hold

days left

Run time

0.0s

0 calls

Size

2.3MB

0.00 ACU used

Services in this partition

Utilities
0 calls · 0.00 ACU

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Good to know

Billed per call, with the price shown in tools/list. See pricing
Runs inside your partition, so inputs and results stay isolated and follow its retention settings.
Safe to chain: pair it with Ahura Workflows for retries and approvals.

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