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The Crypto toolkit provides local cryptographic helpers for agents: hash text, create HMAC signatures, and generate random passwords. No API key or connection is required — operations run in EKB without calling an external service. Add it on the agent Toolkits tab, then reference tools with @ in the personality prompt.

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Prerequisites

  • An agent you can edit

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Available tools

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Use cases

  • Fingerprint content or file payloads before storing a checksum
  • Build an HMAC for a webhook or API that expects a signed payload
  • Generate one-time passwords or API-style secrets during a setup conversation

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Tips

  • Prefer SHA256 or SHA512 for security-sensitive hashing. MD5 is available for compatibility but is not recommended for new security designs.
  • The HMAC secret is a tool parameter for that call — do not log it or paste it into shared chats.
  • Password length is capped at 256 characters.
  • For storing secrets used by other integrations, prefer platform connection/vault patterns rather than keeping passwords only in chat history.

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Troubleshooting