feat(packages): python client (openchainbench) for PyPI

.github/workflows/pypi-publish.yml

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+name: PyPI Publish
+
+on:
+  push:
+    tags:
+      - "python-v*"
+  workflow_dispatch:
+    inputs:
+      ref:
+        description: "Git ref to build (branch, tag or sha)"
+        required: false
+        default: "main"
+
+jobs:
+  build:
+    name: Build sdist + wheel
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.inputs.ref || github.ref }}
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+      - name: Install build tooling
+        run: python -m pip install --upgrade pip build
+      - name: Build distributions
+        working-directory: packages/python-client
+        run: python -m build
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: python-dist
+          path: packages/python-client/dist/
+
+  smoke-test:
+    name: Install + import smoke test
+    needs: build
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - uses: actions/download-artifact@v4
+        with:
+          name: python-dist
+          path: dist
+      - name: Install built wheel
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install dist/openchainbench-*.whl
+      - name: Import smoke test
+        run: |
+          python -c "import openchainbench; print(openchainbench.__version__)"
+
+  publish:
+    name: Publish to PyPI (Trusted Publisher)
+    needs: [build, smoke-test]
+    if: startsWith(github.ref, 'refs/tags/python-v')
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/project/openchainbench/
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: python-dist
+          path: dist
+      - uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: dist

.github/workflows/python-client-ci.yml

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+name: Python Client CI
+
+on:
+  pull_request:
+    paths:
+      - "packages/python-client/**"
+      - ".github/workflows/python-client-ci.yml"
+  push:
+    branches: [main, dev]
+    paths:
+      - "packages/python-client/**"
+      - ".github/workflows/python-client-ci.yml"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+    env:
+      OCB_SKIP_INTEGRATION: "1"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install package + dev deps
+        working-directory: packages/python-client
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -e ".[dev]"
+      - name: Run unit tests
+        working-directory: packages/python-client
+        run: python -m pytest tests -m "not integration"
+      - name: Build sdist + wheel
+        working-directory: packages/python-client
+        run: python -m build

packages/python-client/.gitignore

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+.venv/
+dist/
+build/
+*.egg-info/
+__pycache__/
+*.py[cod]
+.pytest_cache/
+.coverage
+htmlcov/

packages/python-client/LICENSE

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+MIT License
+
+Copyright (c) 2026 OpenChainBench contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/python-client/PUBLISHING.md

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+# Publishing `openchainbench` to PyPI
+
+Releases are fully automated through GitHub Actions and PyPI Trusted
+Publishers. No long-lived API token is stored anywhere.
+
+## One-time setup (PyPI Trusted Publisher)
+
+1. Create an account on https://pypi.org if you do not have one.
+2. Reserve the project name by uploading the first release manually
+   **or** request the project via the PyPI account settings. We do the
+   pending publisher flow below so the very first release is automated.
+3. Go to https://pypi.org/manage/account/publishing/ and click
+   **Add a new pending publisher**.
+4. Fill in:
+   - PyPI project name: `openchainbench`
+   - Owner: `ChainBench`
+   - Repository name: `OpenChainBench`
+   - Workflow name: `pypi-publish.yml`
+   - Environment name: `pypi`
+5. Save. PyPI will accept the first upload from the matching GitHub
+   workflow with no token.
+6. In GitHub, go to **Settings > Environments** for the repo and create
+   the `pypi` environment. Add required reviewers if you want a manual
+   gate before publish.
+
+## Cutting a release
+
+1. Bump the version in two places:
+   - `packages/python-client/pyproject.toml` (`project.version`)
+   - `packages/python-client/src/openchainbench/__init__.py` (`__version__`)
+   - `packages/python-client/src/openchainbench/client.py` (`USER_AGENT`)
+2. Commit the bump on `main`.
+3. Tag and push:
+   ```bash
+   git tag python-v0.1.0
+   git push origin python-v0.1.0
+   ```
+4. The `PyPI Publish` workflow runs: build, smoke test on 3.10-3.13,
+   then publish via the Trusted Publisher OIDC flow.
+5. Verify the release at https://pypi.org/project/openchainbench/.
+
+## Local smoke build
+
+```bash
+cd packages/python-client
+python -m pip install --upgrade build
+python -m build
+ls dist/
+```
+
+This produces an `sdist` (`.tar.gz`) and a pure-Python `wheel` (`.whl`).
+The Trusted Publisher workflow runs the exact same command in CI.
+
+## Tag namespace
+
+We deliberately use `python-v*` (not bare `v*`) so OCB site tags such as
+`v1.0-dataset` never trigger a Python publish.

packages/python-client/README.md

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+# openchainbench
+
+Official Python client for [OpenChainBench](https://openchainbench.com), the live, reproducible benchmark suite for crypto infrastructure (RPC latency, bridge fees, perp venues, oracle deviation, and more).
+
+[![PyPI version](https://img.shields.io/pypi/v/openchainbench.svg)](https://pypi.org/project/openchainbench/)
+[![Python versions](https://img.shields.io/pypi/pyversions/openchainbench.svg)](https://pypi.org/project/openchainbench/)
+[![Downloads](https://img.shields.io/pypi/dm/openchainbench.svg)](https://pypi.org/project/openchainbench/)
+[![License](https://img.shields.io/pypi/l/openchainbench.svg)](https://github.com/ChainBench/OpenChainBench/blob/main/LICENSE)
+
+The data served by openchainbench.com is published under [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/). Attribute with a link back to the benchmark page (`pageUrl` on every payload).
+
+## Install
+
+```bash
+pip install openchainbench
+```
+
+Requires Python 3.10+.
+
+## Quick start
+
+```python
+from openchainbench import OpenChainBench
+
+with OpenChainBench() as ocb:
+    for bench in ocb.list_benchmarks():
+        if bench.leader:
+            print(f"{bench.title}: {bench.leader.name} -> {bench.value}")
+```
+
+### Fetch one benchmark
+
+```python
+from openchainbench import OpenChainBench
+
+with OpenChainBench() as ocb:
+    bench = ocb.get_benchmark("bridge-fee")
+    print(bench.headline)
+    for row in bench.rankings[:3]:
+        print(row.slug, row.ms.p50, row.success_rate)
+```
+
+### Fetch a time series
+
+```python
+from openchainbench import OpenChainBench
+
+with OpenChainBench() as ocb:
+    series = ocb.get_series("bridge-fee", range="24h")
+    for provider in series.providers:
+        print(provider.name, provider.values[-1])
+```
+
+### Filter by chain or region
+
+```python
+bench = ocb.get_benchmark("network-fees", chain="ethereum")
+series = ocb.get_series("network-fees", range="7d", chain="ethereum", region="eu-west")
+```
+
+## Error handling
+
+The client maps HTTP responses to a typed exception hierarchy so callers
+can react to intent rather than status codes.
+
+```python
+from openchainbench import (
+    OpenChainBench,
+    NotFoundError,
+    RateLimitError,
+    APIUnavailableError,
+)
+
+with OpenChainBench() as ocb:
+    try:
+        ocb.get_benchmark("not-a-real-slug")
+    except NotFoundError:
+        ...
+    except RateLimitError as exc:
+        print(f"retry after {exc.retry_after_sec}s")
+    except APIUnavailableError:
+        # cold cache or Prom blackout, retry later
+        ...
+```
+
+## API reference
+
+| Method | Endpoint | Returns |
+|---|---|---|
+| `list_benchmarks()` | `GET /api/citable` | `list[BenchmarkSummary]` |
+| `fetch_citable_index()` | `GET /api/citable` | `CitableIndex` |
+| `get_benchmark(slug, *, chain=None, region=None)` | `GET /api/stat/<slug>` | `Benchmark` |
+| `get_series(slug, *, range="24h", chain=None, region=None, providers=None)` | `GET /api/series/<slug>` | `Series` |
+
+All models are immutable dataclasses (`frozen=True`).
+
+## Rate limits
+
+The public API allows 60 requests per minute per IP. The client surfaces
+HTTP 429 as a `RateLimitError` with a `retry_after_sec` attribute.
+
+## Citation
+
+If you use the data in a paper, post, or product, please link the
+benchmark page. The license is CC-BY-4.0. Every payload includes a
+ready-to-paste `quote` field that already contains the attribution.
+
+## Links
+
+- Site: <https://openchainbench.com>
+- Docs: <https://openchainbench.com/docs>
+- Repository: <https://github.com/ChainBench/OpenChainBench>
+- Issues: <https://github.com/ChainBench/OpenChainBench/issues>
+
+## License
+
+MIT. The data fetched from the API stays under CC-BY-4.0; this client
+license only covers the code.

packages/python-client/pyproject.toml

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+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "openchainbench"
+version = "0.1.0"
+description = "Python client for OpenChainBench live crypto infrastructure benchmarks"
+authors = [{ name = "OpenChainBench", email = "hello@openchainbench.com" }]
+license = { text = "MIT" }
+requires-python = ">=3.10"
+readme = "README.md"
+keywords = [
+  "openchainbench",
+  "blockchain",
+  "benchmark",
+  "rpc",
+  "crypto",
+  "ethereum",
+  "solana",
+  "infrastructure",
+]
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: MIT License",
+  "Operating System :: OS Independent",
+  "Programming Language :: Python",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3 :: Only",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Topic :: Internet",
+  "Topic :: Software Development :: Libraries :: Python Modules",
+  "Typing :: Typed",
+]
+dependencies = [
+  "httpx>=0.27",
+]
+
+[project.optional-dependencies]
+dev = [
+  "pytest>=8",
+  "pytest-cov>=5",
+  "build>=1.2",
+]
+
+[project.urls]
+Homepage = "https://openchainbench.com"
+Documentation = "https://openchainbench.com/docs"
+Repository = "https://github.com/ChainBench/OpenChainBench"
+Issues = "https://github.com/ChainBench/OpenChainBench/issues"
+Changelog = "https://github.com/ChainBench/OpenChainBench/releases"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/openchainbench"]
+
+[tool.hatch.build.targets.sdist]
+include = [
+  "src/openchainbench",
+  "tests",
+  "README.md",
+  "LICENSE",
+  "pyproject.toml",
+]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+addopts = "-ra -q"
+markers = [
+  "integration: hits the live openchainbench.com API (skipped when OCB_SKIP_INTEGRATION=1)",
+]