Prompt Storage and Retrieval with nilDB and nilAI

[jcabrero]

📦 Prompt Storage and Retrieval with nilDB and nilAI

This module enables users to store prompts in nilDB and securely retrieve them through nilAI for trusted prompt-based execution. This ensures the privacy-preserving capabilities of the Prompt

🔧 Overview

This system introduces a secure mechanism for:

• Storing user-owned prompts in nilDB
• Delegating retrieval rights to nilAI using NUCs.

Access and retrieval are strictly scoped via cryptographic delegation and verified enclave execution.

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⚙️ How It Works

1. Prompt Storage in nilDB

• nilDB hosts a collection with owned schemas.
• Each user owns one or more prompt records.
• Prompts can be stored using provided SDKs:
  • nilai-py (Python SDK)
  • nilai-ts (TypeScript SDK)

2. Access Delegation

• The prompt owner stores the prompt in a nilDB user-owned collection and obtains a store_id.
• The prompt owner generates a NUC, which is issued to a specific nilAI server, which already owns its private-public keypair.
• The owner provides the Store ID and NUC to a requesting User to make their query.

3. Query Execution via nilAI

• The user sends a query to nilAI including:
  • The Prompt Owner Store ID of the prompt
  • The Prompt Owner Delegation Token (NUC)
• nilAI retrieves the prompt inside a TEE, ensuring:
  • Only the delegated server can access the prompt
  • Execution is secure and auditable

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🔁 Sequence Diagram

sequenceDiagram
    participant User
    participant PromptOwner
    participant nilai-py/ts
    participant nilDB
    participant nilAI

    PromptOwner->>nilai-py/ts: Store prompt("promptText")
    nilai-py/ts->>nilDB: Write prompt to collection
    nilDB-->>nilai-py/ts: Store ID
    nilai-py/ts-->>PromptOwner: Store ID

    PromptOwner-->>User: Send Delegation NUC for nilAI + Store ID

    User->>nilAI: Send query with Store ID + Delegation Token (NUC)
    nilAI-->>nilDB: Secure retrieval with NUC
    nilDB-->>nilAI: Return prompt if authorized
    nilAI-->>nilAI: Execute query using prompt
    nilAI-->>User: Query result

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