dev-nectarpy 0.0.50

A Python API module designed to run queries on Nectar

PYTHON NECTAR MODULE

This is a Python API module designed to run queries on Nectar, add bucket information, and set policies.

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Installation

To install the nectarpy module, use the following command:

pip3 install nectarpy

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Getting Started

Importing the Module

To use nectarpy, first import the Nectar class:

from nectarpy import Nectar

Setting Up API Credentials

You must provide your API_SECRET key to authenticate requests:

API_SECRET = "<api-secret>"

Creating an Instance

Initialize the Nectar client using the API secret:

nectar = Nectar(API_SECRET)

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Policy Management

Adding Policies

Policies define which columns can be accessed and under what conditions.

Adding a Policy for All Columns

Allows access to all columns with a validity period of 1000 days and a price of 0.0123 USD:

policy_id = nectar.add_policy(
    allowed_categories=["*"],                   # All data categories are allowed
    allowed_addresses=["<address-value>"],      # Only this wallet address is allowed to query. Example: 0x39Ccc3519e16ec309Fe89Eb782792faFfB1b399d
    allowed_columns=["*"],                      # All columns in the dataset are accessible
    valid_days=1000,                            # Policy is valid for 1000 days
    usd_price=0.0123,                           # Cost per query in USD
)

Adding a Policy for Specific Columns

Restricts access to only the age and height columns:

policy_id = nectar.add_policy(
    allowed_categories=["*"],                   # All data categories are allowed
    allowed_addresses=["<address-value>"],      # Only this wallet address is allowed to query. Example: 0x39Ccc3519e16ec309Fe89Eb782792faFfB1b399d
    allowed_columns=["age", "height"],          # Only the age and height column in the dataset are accessible
    valid_days=1000,                            # Policy is valid for 1000 days
    usd_price=0.0123,                           # Cost per query in USD
)

Parameters

Parameter	Description
allowed_categories	List of allowed data categories (e.g., ["ONLY_PHARMA"], ["*"] for all).
allowed_addresses	List of wallet addresses allowed to access this policy, this address can be found at https://nectar.tamarin.health. Required
allowed_columns	List of accessible data columns (e.g., ["age", "income"], or ["*"]).
valid_days	How long (in days) the policy remains active.
usd_price	Price per access in USD (floating-point number).

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Bucket Management

Adding a Bucket

The TEE_DATA_URL represents the secure enclave node where the data is stored.

TEE_DATA_URL = "tls://<ip-address>:5229"

bucket_id = nectar.add_bucket(
    policy_ids=[policy_id],
    data_format="std1",
    node_address=TEE_DATA_URL,
)

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Executing Queries

You can retrieve results from stored data using defined policies and bucket IDs.

print(bucket_id)

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Exception Handling

Case 1: API_SECRET Has No Balance

If your API_SECRET does not have sufficient funds, transactions will fail.

API_SECRET = "<api-secret>"

nectar = Nectar(API_SECRET)

policy_id = nectar.add_policy(
    allowed_categories=["*"],
    allowed_addresses=[],
    allowed_columns=["*"],
    valid_days=1000,
    usd_price=0.0123,
)