diff --git a/.github/workflows/build-tensor-grep.yml b/.github/workflows/build-tensor-grep.yml
new file mode 100644
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+++ b/.github/workflows/build-tensor-grep.yml
@@ -0,0 +1,144 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on the `build-wheels-pypi` job of
+# https://github.com/oimiragieo/tensor-grep/blob/v1.118.0/.github/workflows/ci.yml
+name: Build tensor-grep wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'tensor-grep version to build (git tag without the v prefix, e.g. 1.118.0)'
+        required: true
+        default: '1.118.0'
+  pull_request:
+    paths:
+      - '.github/workflows/build-tensor-grep.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '1.118.0' }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  # `inputs.version` is empty on pull_request events; default to 1.118.0 there.
+  TENSOR_GREP_VERSION: ${{ inputs.version || '1.118.0' }}
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+
+  build_wheel:
+    needs: [setup]
+    name: Build tensor-grep ${{ inputs.version || '1.118.0' }} cp311-abi3-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 240
+
+    steps:
+      - name: Checkout tensor-grep v${{ env.TENSOR_GREP_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: oimiragieo/tensor-grep
+          ref: v${{ env.TENSOR_GREP_VERSION }}
+          persist-credentials: false
+
+      # `[dependencies] pyo3` carries `abi3-py311` unconditionally in
+      # rust_core/Cargo.toml (gotcha 181), so this one build serves every
+      # GIL-ful interpreter >= 3.11; upstream itself ships no free-threaded
+      # wheel either (PyPI 1.118.0 has exactly one Linux wheel).
+      - name: Build wheel
+        uses: PyO3/maturin-action@e83996d129638aa358a18fbd1dfb82f0b0fb5d3b  # v1.51.0
+        with:
+          command: build
+          target: riscv64gc-unknown-linux-gnu
+          args: --release --locked --out dist
+          manylinux: '2_39'
+          before-script-linux: git config --global --add safe.directory "*"
+
+      - name: Verify the wheel ships the compiled extension
+        run: |
+          set -euo pipefail
+          python3 - dist/*.whl <<'EOF'
+          import sys, zipfile
+          names = zipfile.ZipFile(sys.argv[1]).namelist()
+          sos = [n for n in names if n.endswith(".so")]
+          assert any(n.startswith("tensor_grep/rust_core") for n in sos), sos
+          print(sys.argv[1], "->", sos)
+          EOF
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: tensor-grep-${{ env.TENSOR_GREP_VERSION }}-cp311-abi3-manylinux_riscv64
+          path: dist/*.whl
+          if-no-files-found: error
+
+  test_wheel:
+    name: Test tensor-grep ${{ inputs.version || '1.118.0' }} on Python ${{ matrix.python-version }}
+    needs: [setup, build_wheel]
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 30
+    env:
+      # Without this uv would reuse the runner image's system CPython for 3.12
+      # and download a standalone build for the others.
+      UV_PYTHON_PREFERENCE: only-managed
+      # cryptography is a required (non-optional) runtime dependency and has
+      # no wheel on public PyPI for riscv64.
+      UV_EXTRA_INDEX_URL: https://pypi.riseproject.dev/simple/
+      # Without this, uv pins rpds-py (a transitive dep via mcp->jsonschema) to
+      # pypi.riseproject.dev because it appears there first, missing that
+      # public PyPI's newer rpds-py already ships a riscv64 cp314 wheel.
+      UV_INDEX_STRATEGY: unsafe-best-match
+    strategy:
+      fail-fast: false
+      matrix:
+        # No 3.14t: the wheel is cp311-abi3, and pyo3 disables abi3 under
+        # Py_GIL_DISABLED, so a free-threaded interpreter can't install it
+        # (upstream ships no free-threaded wheel either).
+        python-version: ['3.12', '3.13', '3.14']
+
+    steps:
+      - name: Download wheel
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c  # v8.0.1
+        with:
+          name: tensor-grep-${{ env.TENSOR_GREP_VERSION }}-cp311-abi3-manylinux_riscv64
+
+      - name: Install Python
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d  # v10.0.1
+        with:
+          python-version: ${{ matrix.python-version }}
+          activate-environment: true
+          enable-cache: false
+
+      - name: Install wheel
+        run: uv pip install --reinstall ./*.whl
+
+      # No wheel-level test suite ships in the sdist/checkout (tests/ import
+      # the checkout, not the installed wheel); mirror the README's own
+      # rg-compatible search example instead.
+      - name: Test wheel
+        run: |
+          set -euo pipefail
+          tg --version
+          tg --help >/dev/null
+
+          work=$(mktemp -d)
+          printf 'hello world\nsomething else\nhello again\n' > "$work/a.txt"
+
+          out=$(tg search hello "$work/a.txt")
+          grep -q 'hello world' <<<"$out"
+          grep -q 'hello again' <<<"$out"
+          tg search -i HELLO "$work/a.txt" | grep -q 'hello world'
+          ! grep -q 'something else' <<<"$out"
+
+  publish:
+    name: Publish tensor-grep ${{ inputs.version || '1.118.0' }}
+    needs: [setup, build_wheel, test_wheel]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: tensor-grep-${{ inputs.version || '1.118.0' }}-cp311-abi3-manylinux_riscv64