Mojang · JSON Structure

Minecraft Services Player Certificates Structure

Player keypair payload returned by /player/certificates.

Type: object Properties: 5
Games And ComicsMinecraftGamingIdentityPlayer ProfilesSessionPublic APIs

PlayerCertificates is a JSON Structure definition published by Mojang, describing 5 properties. It conforms to the https://json-structure.org/meta/core/v0/# meta-schema.

Properties

keyPair publicKeySignature publicKeySignatureV2 expiresAt refreshedAfter

Meta-schema: https://json-structure.org/meta/core/v0/#

JSON Structure

Raw ↑ 
{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/mojang/refs/heads/main/json-structure/minecraft-services-player-certificates-structure.json",
  "name": "PlayerCertificates",
  "description": "Player keypair payload returned by /player/certificates.",
  "type": "object",
  "properties": {
    "keyPair": {
      "type": "object",
      "description": "PEM-encoded RSA keypair.",
      "properties": {
        "privateKey": {
          "type": "string",
          "example": "-----BEGIN RSA PRIVATE KEY-----..."
        },
        "publicKey": {
          "type": "string",
          "example": "-----BEGIN RSA PUBLIC KEY-----..."
        }
      }
    },
    "publicKeySignature": {
      "type": "string",
      "description": "Mojang signature over the public key (legacy).",
      "example": "a1b2c3..."
    },
    "publicKeySignatureV2": {
      "type": "string",
      "description": "Mojang signature including player UUID (v2).",
      "example": "a1b2c3..."
    },
    "expiresAt": {
      "type": "datetime",
      "description": "Keypair expiry time.",
      "example": "2026-06-01T00:00:00Z"
    },
    "refreshedAfter": {
      "type": "datetime",
      "description": "Earliest time the client should re-request the keypair.",
      "example": "2026-05-31T12:00:00Z"
    }
  }
}