---
id: py-builder-signing-sdk
version: "0.0.2"
license: unclear
license_treatment: permissive
maintenance: aging
---

# py-builder-signing-sdk — Python builder signing sdk

License: permissive · Maintenance: aging · Downloads: 775.9K/mo

## What it is and what it does

py-builder-signing-sdk is a Python client library for authenticating with Polymarket's builder API. It handles the generation of cryptographically signed HTTP headers required to authenticate builder requests, supporting two signing modes: local signing using API key credentials (key, secret, passphrase) or remote signing by delegating to an HTTP endpoint. The package wraps the signing logic so you pass an HTTP method, path, and body to a config object and receive ready-to-use signed headers.

The package depends on python-dotenv for environment configuration and requests for HTTP operations. It targets Python 3.9 and later and is distributed as a pure-Python wheel with low installation friction. Given its narrow focus on Polymarket integration and aging maintenance status, it's most useful for developers building applications that interact with Polymarket's builder API.

Use it for:

- Authenticate requests to Polymarket builder endpoints when building trading or market-making applications.
- Delegate signing to a remote service for key management separation in production environments.
- Generate signed headers for custom HTTP clients that need to call Polymarket builder APIs.
- Integrate Polymarket builder authentication into Python-based trading bots or market data pipelines.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Generates cryptographically signed HTTP headers for Polymarket builder authentication, supporting both local key-based signing and remote signing via HTTP.

Yes, if you are building on Polymarket's builder API and need Python-based authentication. The low install friction and permissive license make it straightforward to add. However, the aging maintenance status (298 days since last release, minimal repository activity) means you should verify that the package still works with current Polymarket API versions and be prepared to maintain a fork if updates stall.

## Install

pip install py-builder-signing-sdk
uv add py-builder-signing-sdk
poetry add py-builder-signing-sdk

## Installing py-builder-signing-sdk

Before you install: Low install friction with only two runtime dependencies (python-dotenv, requests). Maintenance status is aging—last release was 298 days ago and the repository shows minimal activity (8 stars), so updates and bug fixes may be slow.

License in practice: MIT license (permissive) means you can use, modify, and distribute this package freely with minimal restrictions, as long as you include the license notice.

Quickstart:

pip install py-builder-signing-sdk

from py_builder_signing_sdk import BuilderConfig, BuilderApiKeyCreds

creds = BuilderApiKeyCreds(key="key", secret="secret", passphrase="pass")
config = BuilderConfig(local_builder_creds=creds)
headers = config.generate_builder_headers("POST", "/order", '{"data": "example"}')

Requires Python 3.9 or later.

Verify before relying:

- Whether the package is actively maintained or if the aging status signals potential abandonment.
- What cryptographic algorithm(s) are used for signing and whether they meet current security standards.
- Whether remote signing endpoint authentication (token parameter) supports standard schemes or custom protocols.

## Package facts

- License: not declared (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: aging
- Downloads: 775.9K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

polymarket builder authentication, cryptographic header signing, api key signing sdk, builder credentials management, signed http requests, polymarket sdk python, polymarket-integration, api-authentication

[View on SkillFed](https://skillfed.io/packages/py-builder-signing-sdk) · [View on PyPI](https://pypi.org/project/py-builder-signing-sdk/)