factory_verify_receipt
ActiveTool of SaSame Research Agent
declared in 3.0.0
Offline-verify a Factory lifecycle station receipt's ed25519 signature (signed_by/signature, added #1475/#1768) against SaSame's trusted issuer key — the same key trust_pubkey and verify_mcp_cert already use. Detects any receipt content altered after signing, or a receipt that was never actually signed by SaSame. Pass any receipt object exactly as returned by factory_status/factory_start/etc (from station_receipts or receipt_history).
Parameters schema
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"receipt"
],
"properties": {
"receipt": {
"type": "object",
"required": [
"receipt_id",
"lifecycle_id",
"station",
"status",
"completed_at",
"evidence",
"previous_receipt_sha256",
"receipt_sha256",
"signed_by",
"signature"
],
"properties": {
"status": {
"type": "string"
},
"station": {
"type": "string"
},
"evidence": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"signature": {
"type": "string"
},
"signed_by": {
"type": "string"
},
"receipt_id": {
"type": "string"
},
"completed_at": {
"type": "string"
},
"lifecycle_id": {
"type": "string"
},
"receipt_sha256": {
"type": "string"
},
"previous_receipt_sha256": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
}
},
"description": "A receipt object exactly as returned inside a Factory lifecycle's station_receipts or receipt_history"
}
}
}No endpoints wrapped at confidence ≥ 0.50.
Parent server
SaSame Research Agent
https://github.com/shigeki7777/sasame-mcp
2/7 registries