eth-rlp
eth-rlp: RLP definitions for common Ethereum objects in Python
Decision gist · record as of 2026-08-14
Yes. eth-rlp is a stable, low-friction dependency for any Python project working with Ethereum data structures. It has no known vulnerabilities, a permissive license, and broad Python version support. The aging maintenance status (556 days since last release) is not a blocker for a mature, well-scoped library; however, if you need active feature development or rapid bug fixes, verify that the package's release cadence meets your project's expectations.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low install friction with a pure-Python wheel.
- Maintenance is aging—last release was 556 days ago—but the repository remains active and the package is marked Production/Stable with support for Python 3.8 through 3.13.
License · maintenance · safety
MIT (permissive) — MIT license (permissive) places no restrictions on use, modification, or distribution; suitable for commercial and proprietary projects.
last release 2025-02-04 (556 days) · last repo commit 2025-12-17 · 17 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 6,512,565 downloads/mo, #1,895 on PyPI
Alternatives
Verify before relying
pip install eth-rlp
from eth_rlp import encode_transaction
# Encode an Ethereum transaction object using RLP definitions- Specific RLP object types supported beyond 'common Ethereum objects' (transactions, blocks, receipts, etc.)
- Whether this package provides encoding/decoding or only definitions/schemas for RLP structures
- Integration patterns with eth-utils, hexbytes, and rlp dependencies in typical workflows
What it is and what it does
eth-rlp is a Python library that defines RLP (Recursive Length Prefix) serialization rules for standard Ethereum data structures. RLP is the encoding scheme used throughout the Ethereum protocol to serialize objects for transmission and storage. This package wraps the lower-level rlp library with Ethereum-specific object definitions, so you can encode and decode transactions, blocks, and other blockchain primitives without manually specifying their structure each time.
The package depends on eth-utils for utility functions, hexbytes for hex-encoded byte handling, rlp for the core encoding/decoding logic, and typing_extensions for type hints. It targets modern Python versions (3.8–3.13) and is maintained by the Ethereum Foundation. With no known vulnerabilities and a permissive MIT license, it is suitable for production use in Ethereum tooling, wallets, and protocol implementations.
Use it for
- Serialize Ethereum transactions for broadcast to the network or storage in a local database.
- Deserialize RLP-encoded blockchain data received from peers or archived state.
- Build Ethereum client libraries or wallet software that needs standard object encoding.
- Validate or inspect the structure of Ethereum protocol messages in development and testing.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
eth-rlp is a stable, low-friction dependency for any Python project working with Ethereum data structures. It has no known vulnerabilities, a permissive license, and broad Python version support. The aging maintenance status (556 days since last release) is not a blocker for a mature, well-scoped library; however, if you need active feature development or rapid bug fixes, verify that the package's release cadence meets your project's expectations.
Install
eth-rlp on PyPI
Before you install
Low install friction with a pure-Python wheel. Maintenance is aging—last release was 556 days ago—but the repository remains active and the package is marked Production/Stable with support for Python 3.8 through 3.13.
License in practice
MIT license (permissive) places no restrictions on use, modification, or distribution; suitable for commercial and proprietary projects.
Quickstart
pip install eth-rlp
from eth_rlp import encode_transaction
# Encode an Ethereum transaction object using RLP definitionsVerify before relying
- Specific RLP object types supported beyond 'common Ethereum objects' (transactions, blocks, receipts, etc.)
- Whether this package provides encoding/decoding or only definitions/schemas for RLP structures
- Integration patterns with eth-utils, hexbytes, and rlp dependencies in typical workflows
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release <4,>=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 4 packageseth-utilshexbytesrlptyping_extensions |
| Maintenance | Aging 556 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 6,512,565 / month, #1,895 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseNatural Language :: EnglishProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9 |
Evidence: eth_rlp-2.2.0-py3-none-any.whl
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See also rlp · eth-typing · faster-eth-abi · poly-eip712-structs · py-multicodec · libipld · prophy · bech32m · scalecodec · pyiso8583