# Template

Table of Contents

templateId

An oracle request has many parameters. It is very common for clients (e.g., a data feed) to make repeated requests with the exact same parameters. In such instances, it is wasteful to pass all of these parameters repeatedly.

Templates are on-chain records of request parameters that the clients can refer to while making requests. Additional advantages are reducing boilerplate code required to make a request, improving UX and allowing large parameter payloads (e.g., off-chain computation specifications) at no additional gas cost.

# `templateId`

Each template is identified by a templateId, which is the hash of its contents:

templateId = keccak256(abi.encode(
    providerId,
    endpointId,
    requesterIndex,
    designatedWallet,
    fulfillAddress,
    fulfillFunctionId,
    parameters
    ));

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This allows Airnode to fetch templates with a static call, and verify that the received parameters are not tampered with.

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# Template

# templateId

# `templateId`