diff --git a/recipes/pion/build.sh b/recipes/pion/build.sh
new file mode 100755
index 00000000..350c0aba
--- /dev/null
+++ b/recipes/pion/build.sh
@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+# Builds pion-server from source only: the open reference vector kernels, no
+# vendor/ archive, as `pixi run build-open` does. The channel carries no closed
+# binaries; the release tarballs and Homebrew link the tuned closed kernels, and
+# vector search at 1536 dims is the only thing that differs.
+set -euo pipefail
+
+case "${target_platform}" in
+  osx-arm64)     cpu=apple-m1 ;;
+  linux-64)      cpu=x86-64-v2 ;;
+  linux-aarch64) cpu=neoverse-n1 ;;
+  *) echo "unsupported platform: ${target_platform}" >&2; exit 1 ;;
+esac
+
+shims=(crash_wrap build_pool_wrap worker_spawn_wrap fcntl_wrap geo_math uring_wrap xdp_wrap ssm_state_wrap)
+[[ "${target_platform}" == osx-* ]] && shims+=(dev_macos_stubs)
+link=()
+for f in "${shims[@]}"; do
+  gcc -O3 -c "src/ffi/$f.c" -o "src/ffi/$f.o"
+  link+=(-Xlinker "src/ffi/$f.o")
+done
+
+if [[ "${target_platform}" == osx-* ]]; then
+  for f in metal_wrap nle_wrap; do
+    clang -O3 -c -fobjc-arc "src/ffi/$f.m" -o "src/ffi/$f.o"
+    link+=(-Xlinker "src/ffi/$f.o")
+  done
+fi
+
+bash scripts/build_lua.sh
+link+=(-Xlinker src/ffi/lua_wrap.o -Xlinker src/ffi/lua/liblua.a)
+
+if [[ "${target_platform}" == osx-* ]]; then
+  link+=(-Xlinker -export_dynamic
+         -Xlinker -u -Xlinker _pion_gh199_build_lane
+         -Xlinker -u -Xlinker _pion_vector_auto_build
+         -Xlinker -u -Xlinker _pion_worker_entry
+         -Xlinker -u -Xlinker _pion_script_dispatch
+         -Xlinker -framework -Xlinker Metal
+         -Xlinker -framework -Xlinker Foundation
+         -Xlinker -framework -Xlinker NaturalLanguage)
+else
+  link+=(-Xlinker --export-dynamic
+         -Xlinker -u -Xlinker pion_gh199_build_lane
+         -Xlinker -u -Xlinker pion_vector_auto_build
+         -Xlinker -u -Xlinker pion_worker_entry
+         -Xlinker -u -Xlinker pion_script_dispatch
+         -Xlinker -lm -Xlinker -lpthread)
+fi
+
+# Stamp src/common/version.mojo from VERSION, as `pixi run build` does. A tag
+# archive has no .git, so the stamp reads the commit from .export_sha. GIT_DIR
+# keeps git from finding a repository the build directory happens to sit in.
+echo "${PION_COMMIT}" > .export_sha
+GIT_DIR=/nonexistent bash scripts/stamp_version.sh
+
+mkdir -p "${PREFIX}/bin"
+mojo build -I . -O3 --target-cpu "${cpu}" src/main.mojo "${link[@]}" -o "${PREFIX}/bin/pion-server"
+
+# The --metal-attention shader. pion-server looks for it next to its own
+# executable, including <exe>/../share/pion. Compiling it needs full Xcode;
+# without it the flag reports NOT ACTIVE and nothing else changes.
+if [[ "${target_platform}" == osx-* ]]; then
+  if xcrun -sdk macosx metal -c src/ffi/metal_compute.metal -o metal_compute.air &&
+     xcrun -sdk macosx metallib metal_compute.air -o metal_compute.metallib; then
+    mkdir -p "${PREFIX}/share/pion"
+    cp metal_compute.metallib "${PREFIX}/share/pion/"
+  else
+    echo "[Metal] no shader compiler (needs full Xcode): --metal-attention will report NOT ACTIVE" >&2
+  fi
+fi
+
+# install_name_tool tries and fails to rewrite paths inside these.
+find "${PREFIX}" -type d -name .mojo_cache -prune -exec rm -rf {} +
+# The compiler writes these into the prefix it runs from; they are not Pion's.
+rm -rf "${PREFIX}/share/max/crashdb" "${PREFIX}/share/max/firstActivation"
diff --git a/recipes/pion/recipe.yaml b/recipes/pion/recipe.yaml
new file mode 100644
index 00000000..27ae0e95
--- /dev/null
+++ b/recipes/pion/recipe.yaml
@@ -0,0 +1,77 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/prefix-dev/recipe-format/main/schema.json
+# Built from source only, with Pion's open reference vector kernels: this channel
+# carries no closed binaries.
+
+context:
+  version: "1.1.0"
+  # The commit the v${{ version }} tag points at, stamped into the binary as the
+  # release binaries stamp it.
+  commit: "8221878"
+  mojo_version: "1.2.0"
+
+package:
+  name: pion
+  version: ${{ version }}
+
+source:
+  url: https://github.com/pavelhorak/pion/archive/refs/tags/v${{ version }}.tar.gz
+  sha256: e71259ccb38f5370b6cdaae70c8cab017a4a3a6876e56fe63facb99d7bf83116
+
+build:
+  number: 0
+  skip:
+    - win
+  script:
+    file: build.sh
+    env:
+      PION_COMMIT: ${{ commit }}
+
+requirements:
+  host:
+    - mojo-compiler ==${{ mojo_version }}
+  # pion-server loads libKGENCompilerRTShared (and the two libraries it pulls
+  # in) from the compiler package at run time.
+  run:
+    - mojo-compiler ==${{ mojo_version }}
+
+tests:
+  - script:
+      - bash test_server.sh ${{ version }}
+    requirements:
+      run:
+        - python >=3.10
+    files:
+      recipe:
+        - test_server.sh
+      source:
+        - tests/test_raw.py
+        - tests/resp_strict.py
+        - tests/test_vector_recall_smoke.py
+
+about:
+  homepage: https://pion.pavelhorak.com
+  repository: https://github.com/pavelhorak/pion
+  documentation: https://pion.pavelhorak.com
+  license: Apache-2.0
+  license_file:
+    - LICENSE
+    - NOTICE
+  summary: Redis-compatible key-value and vector database written in Mojo, built entirely from source
+  description: |
+    Pion speaks RESP2/RESP3, so existing Redis clients work against it. It is a
+    durable key-value store with a write-ahead log, a cache with Redis's eviction
+    policies, vector search over the FT.* commands, and a persistent prompt cache
+    for local models.
+
+    This package is the Apache-2.0 build, compiled entirely from source with the
+    open reference vector kernels. The project's release tarballs and Homebrew
+    formula link a closed library of tuned 1536-dim kernels instead, which return
+    identical results, faster. Nothing else differs.
+
+    Run `pion-server`; it listens on port 1974 and keeps its state in the working
+    directory.
+
+extra:
+  maintainers:
+    - pavelhorak
+  project_name: Pion
diff --git a/recipes/pion/test_server.sh b/recipes/pion/test_server.sh
new file mode 100755
index 00000000..8394280a
--- /dev/null
+++ b/recipes/pion/test_server.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# Starts the packaged server and runs the two standard-library checks Pion's
+# release workflow runs before packaging: the wire basics (test_raw.py) and a
+# 1536-dim recall check that only a correct vector build passes.
+set -euo pipefail
+
+expected_version="$1"
+
+pion-server --version | tee version.txt
+grep -q "^pion-server ${expected_version}+" version.txt
+# This package is the open build: the closed kernels must not be linked.
+if grep -q "(closed" version.txt; then
+  echo "the closed vector library is linked" >&2
+  exit 1
+fi
+
+port=$((20000 + RANDOM % 20000))
+pion-server -p "${port}" -w 1 --no-auto-detect --no-auto-embed > server.log 2>&1 &
+pid=$!
+trap 'kill "${pid}" 2>/dev/null || true; wait "${pid}" 2>/dev/null || true' EXIT
+
+for _ in $(seq 1 60); do
+  if python -c "import socket, sys; socket.create_connection(('127.0.0.1', int(sys.argv[1])), timeout=1)" "${port}" 2>/dev/null; then
+    break
+  fi
+  if ! kill -0 "${pid}" 2>/dev/null; then
+    cat server.log
+    exit 1
+  fi
+  sleep 1
+done
+
+python tests/test_raw.py --port "${port}" || { cat server.log; exit 1; }
+python tests/test_vector_recall_smoke.py --port "${port}" || { cat server.log; exit 1; }