Omniseal

by PureCipher · remote · no sign-in to list tools · v1.0.0 · published by GitHub user PureCipher

Conceal, retrieve, verify, and remove hidden files with PureCipher Omniseal.

Deletes · 1Changes · 2

Compare Registry entry

4 tools: 1 can delete or cancel things, 2 change things and 1 only read.

Scanned Oct 21, 2026

Deletes or cancels1Claude Code: deny: see these tools
Can't be undone0Claude Code: ask
Changes things2Claude Code: ask: see these tools
Only reads1Claude Code: allow: see these tools

4 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http omniseal https://api.purecipher.com/mcp?platform=claude

Findings

Matches of fixed checks, with the text they matched.

1 warn3 info

Warnremove_hidden_file
The server marks "remove_hidden_file" not destructive (destructiveHint: false), and its own name, description or input give the class "destructive".
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "remove_hidden_file" says "remove": a word for removing or ending something.
What this check looks for
Infoseal_files
The input schema at properties.private_seed.description mentions "credential".
Matched text
inputSchema.properties.private_seed.description: "...d. Never use an account password or API credential."
What this check looks for
Inforetrieve_secret_file
The input schema at properties.private_seed.description mentions "credential".
Matched text
inputSchema.properties.private_seed.description: "...d. Never use an account password or API credential."
What this check looks for
Inforemove_hidden_file
The input schema at properties.private_seed.description mentions "credential".
Matched text
inputSchema.properties.private_seed.description: "...d. Never use an account password or API credential."
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

4 tools

Deletes or cancels 1Removes, cancels or revokes something.Claude Code: deny

remove_hidden_fileReturn a new clean cover with the hidden payload removed; preserve the original sealed file.2 findings
Why it is in this group
- The name "remove_hidden_file" says "remove": a word for removing or ending something.
- The server marks it not destructive (destructiveHint: false), but an annotation never lowers a class.
Findings
- Info
  The input schema at properties.private_seed.description mentions "credential".
  Matched text
  inputSchema.properties.private_seed.description: "...d. Never use an account password or API credential."
  What this check looks for
- Warn
  The server marks "remove_hidden_file" not destructive (destructiveHint: false), and its own name, description or input give the class "destructive".
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "remove_hidden_file" says "remove": a word for removing or ending something.
  What this check looks for
Description, as the server wrote it
Return a new clean cover with the hidden payload removed; preserve the original sealed file. File results are binary MCP resources; this connector rejects results exceeding its 140,000-character limit. Inputs require actual file bytes or reachable URLs.
Annotations the server declares
- title: Remove hidden file
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true

Changes things 2Creates or changes something that can be changed back.Claude Code: ask

seal_filesConceal a secret file inside a cover file, returning a new sealed file without overwriting originals.1 finding
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Findings
- Info
  The input schema at properties.private_seed.description mentions "credential".
  Matched text
  inputSchema.properties.private_seed.description: "...d. Never use an account password or API credential."
  What this check looks for
Description, as the server wrote it
Conceal a secret file inside a cover file, returning a new sealed file without overwriting originals. File results are binary MCP resources; this connector rejects results exceeding its 140,000-character limit. Inputs require actual file bytes or reachable URLs.
Annotations the server declares
- title: Seal files
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
verify_sealed_fileCheck whether an Omniseal sealed file shows signs of tampering.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check whether an Omniseal sealed file shows signs of tampering. File results are binary MCP resources; this connector rejects results exceeding its 140,000-character limit. Inputs require actual file bytes or reachable URLs.
Annotations the server declares
- title: Verify sealed file
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true

Only reads 1Looks things up and changes nothing.Claude Code: allow

retrieve_secret_fileRecover the exact hidden file from an Omniseal sealed file using its private seed.1 finding
Why it is in this group
- The name "retrieve_secret_file" says "retrieve": a word for reading.
Findings
- Info
  The input schema at properties.private_seed.description mentions "credential".
  Matched text
  inputSchema.properties.private_seed.description: "...d. Never use an account password or API credential."
  What this check looks for
Description, as the server wrote it
Recover the exact hidden file from an Omniseal sealed file using its private seed. File results are binary MCP resources; this connector rejects results exceeding its 140,000-character limit. Inputs require actual file bytes or reachable URLs.
Annotations the server declares
- title: Retrieve secret file
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http omniseal https://api.purecipher.com/mcp?platform=claude

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__omniseal__retrieve_secret_file"
    ],
    "ask": [
      "mcp__omniseal__seal_files",
      "mcp__omniseal__verify_sealed_file"
    ],
    "deny": [
      "mcp__omniseal__remove_hidden_file"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as omniseal. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.PureCipher/omniseal/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

3 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Compare with other servers for the same product.

Source: MCP Registry · repository. Synced Oct 21, 2026, 18:18 UTC.

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