# Overview Passport Protocol, offer programmability in the from of what we call Lambda's. Lambdas are programmable conditions that can be used to specify signing and authentication logic for specific wallets. You can use both on and off-chain data to provide specific signature conditions by simple use of APIs. Examples of what is possible, using programmable actions: * Sign my transaction when ETH prices reaches $3000 and submit to blockchain. * Send signature to specific API endpoint, if Date > 12th Jan, 2023 * Generate a signature based on smart contract call outputs ## Features * **Off-Chain Compatibility**: Lambda Actions can pull in data from off-chain sources natively, without requiring the use of a third party oracle. * **Run Arbitrary Code** - Execute any arbitrary code to determine whether to sign or not * **Embeds with any workflow** - Post hooks allows the developers/ users to embed the automation within their workflow easily. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.0xpass.io/programmability/overview.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.