Skill: sign-envelope

Version: 1.0.0

Wrap payload in a signed envelope with hash, signature, and metadata.

Uses ed25519 for signing (key stored locally).

name: sign-envelope version: 1.0.0 description: Create signed envelope with payload, hash, signature, and timestamp

Credentials

credentials:

• name: SIGNING_KEY required: true description: Base64-encoded ed25519 private key

Skill inputs

inputs:

• name: payload type: any required: true description: Data to wrap and sign
• name: key_id type: string required: false description: Key identifier for verification

Skill outputs

outputs:

• name: envelope type: object description: "{payload, hash, signature, key_id, created_at}"
• name: metadata type: object description: Processing metadata

Backend options

backends:

• name: local type: local description: Local signing with ed25519

Expanso components used

components: inputs: - stdin - http_server processors: - mapping - command - log outputs: - stdout - sync_response