KeyHalve - verify sealed documents
Free, no-account verification of KeyHalve-sealed documents. Read-only; never receives keys.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'keyhalve_explain' description lacks action verbin keyhalve_explain
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"verify": {
"command": "npx",
"args": [
"@keyhalve/verify-mcp"
]
}
}
}Runnable packages
0.1.0stdioRemote endpoints
https://mcp.keyhalve.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (3)
🟢keyhalve_verify(input)
Verify a KeyHalve-sealed document. Accepts a verify URL, the raw text of a KeyHalve QR code, or a document id (vp_…, kh_…, cb_…). Returns the cryptographic verdict: whether the seal exists, its live status (active/revoked/expired), ciphertext integrity against the issuance commitment, the KeyHalve rail's independent attestation, the validity window, and the issuer's trust context. This tool NEVER decrypts sealed contents — any decryption key in the URL fragment is discarded unread; contents are only readable by opening the verify URL in a browser.
Input Schema
{
"type": "object",
"properties": {
"input": {
"type": "string",
"description": "A KeyHalve verify URL, QR-code text, or bare document id."
}
},
"required": [
"input"
]
}🟢keyhalve_status(document_id)
Live status of a KeyHalve-sealed document by id: active, revoked (with reason/time), or outside its validity window. Lighter than keyhalve_verify — status only, no integrity or rail checks. Use for "is this still good right now?"
Input Schema
{
"type": "object",
"properties": {
"document_id": {
"type": "string",
"description": "The document id, e.g. vp_…, kh_…, cb_…."
}
},
"required": [
"document_id"
]
}🟢keyhalve_explain(topic)
Plain-language explanation of what a KeyHalve verification verdict means and why it can be trusted (blind rail, three-share custody, commitments, revocation). Optionally focused on one topic.
Input Schema
{
"type": "object",
"properties": {
"topic": {
"type": "string",
"enum": [
"verdict",
"blindness",
"rail",
"revocation",
"integrity",
"issuer_trust",
"limits"
],
"description": "Optional single topic; omit for the overview."
}
}
}Community
Evidence