tardis-client

What it is and what it does

tardis-client was a Python async client for replaying historical tick-level cryptocurrency market data from the tardis.dev API. It provided methods to stream trades, orderbook snapshots, and other market events from multiple exchanges (BitMEX, Deribit, etc.) within a specified date range, along with local cache management. The package depended on aiohttp for HTTP requests, aiofiles for async file I/O, and sortedcontainers for efficient data structures.

As of version 1.4.2 (released 2026-03-26), tardis-client is deprecated and frozen. The package no longer receives new features or maintenance. Its sole purpose now is to direct existing users to tardis-dev, the unified replacement that consolidates replay, dataset downloads, exchange metadata, and cache helpers into a single package. The description includes migration examples showing how to port replay and cache-clearing code to the new API.

Use it for:

• Backtest trading strategies using historical cryptocurrency market data from multiple exchanges.
• Analyze historical orderbook and trade data for market microstructure research.
• Replay market events for debugging or validating trading algorithms offline.

Worth the install?

AI-flagged interpretation of the facts on this page — verify before relying

tardis-client is a deprecated Python client for historical cryptocurrency market data replay from tardis.dev; users should migrate to tardis-dev instead.

No. This package is deprecated and frozen as of 1.4.2. Install tardis-dev instead, which is the active replacement. tardis-client exists only to point users to the migration path; no new features or maintenance will be added. If you are already using it, follow the migration guide in the package description.

Install

tardis-client on PyPI

pip install tardis-client

uv add tardis-client

poetry add tardis-client

Installing tardis-client

Before you install

Low install friction with three lightweight async dependencies (aiohttp, aiofiles, sortedcontainers). However, the package is frozen and no longer maintained—version 1.4.2 exists only to direct users to tardis-dev.

License in practice

Licensed under MPL-2.0 (copyleft), which requires derivative works to disclose source and license under the same terms. For a deprecated package, this is academic unless you are maintaining a fork.

Quickstart

# Old API (deprecated)
from tardis_client import TardisClient, Channel

client = TardisClient(api_key="YOUR_API_KEY")
async for item in client.replay(
    exchange="bitmex",
    from_date="2019-06-01",
    to_date="2019-06-02",
    filters=[Channel("trade", ["XBTUSD"])],
):
    print(item)

Requires Python 3.8 or later; async/await runtime needed. Package is frozen and will not receive updates.

Verify before relying

• Whether tardis-dev is a drop-in replacement or requires significant code refactoring beyond the migration examples shown.
• Performance or feature parity between tardis-client 1.4.2 and tardis-dev for existing workloads.

Package facts

Evidence: tardis_client-1.4.2-py3-none-any.whl

Keywords: cryptocurrency data feed, market data, api client, orderbook, crypto markets data replay, historical data, historical cryptocurrency prices, cryptocurrency api

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