booklint stamp
Signed timestamp receipts for a SHA-256 hash. Send only the hash; we never see the document.
Should I use this
Quality & Safety
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": {
"stamp": {
"url": "https://booklint-stamp.fly.dev/mcp"
}
}
}Remote endpoints
https://booklint-stamp.fly.dev/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟡stamp_hash(sha256, api_key)
Returns a signed receipt {sha256, stamped_at, key_id, signature, public_key_url}: a booklint-family service saw this hash at stamped_at, signed with key key_id. Send ONLY a SHA-256 hex digest (64 characters). We never see or store the document — only the hash you send. This is not legal proof, notary service, evidence, or a certificate of anything. Not advice.
Input Schema
{
"type": "object",
"properties": {
"sha256": {
"type": "string",
"description": "64 hex characters you computed yourself."
},
"api_key": {
"type": "string",
"description": "Optional key. Same as the Bearer header."
}
},
"required": [
"sha256"
],
"additionalProperties": false
}🟢verify_receipt(sha256, stamped_at, key_id, signature, public_key_url, ...)
Checks a receipt from stamp_hash against the published public keys (same check as POST /v1/verify; pass the receipt fields as arguments). Returns valid true or false with a reason. valid true means only that this service signed that hash and time with that key. This is not legal proof, notary service, evidence, or a certificate of anything.
Input Schema
{
"type": "object",
"properties": {
"sha256": {
"type": "string"
},
"stamped_at": {
"type": "string"
},
"key_id": {
"type": "string"
},
"signature": {
"type": "string"
},
"public_key_url": {
"type": "string"
},
"statement": {
"type": "string"
},
"api_key": {
"type": "string",
"description": "Optional key. Same as the Bearer header."
}
},
"required": [
"sha256",
"stamped_at",
"key_id",
"signature"
],
"additionalProperties": false
}Community
Evidence