Files
stack/adapters/pi/adapter.sh
T
jason.woltje 172368612c feat(capabilities): task workspaces + tools allowlist plumbing (#20)
- task schema: optional workspace (absent | :run ephemeral | named
  persistent under dataRoot/workspaces) and capabilities.tools (pi
  documented tool allowlist); strict validation, traversal-proof names
- runner: creates host workspace, passes MOSAIC_WORKSPACE (container
  path) + MOSAIC_TOOLS; result.json records both
- pi adapter: cds into workspace; --tools when allowlist present else
  --no-tools
- mock adapter: logs delivered MOSAIC_* vars to stderr as deterministic
  plumbing evidence (dash prints 'export K=v', so use env not export)

Closes #20
2026-09-02 22:03:46 -05:00

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#!/bin/sh
# Pi adapter: implements the Mosaic adapter contract for the pinned
# @earendil-works/pi-coding-agent CLI.
#
# Contract: see /opt/mosaic/adapters/README.md. stdout = response only.
set -eu
[ -n "${MOSAIC_SYSTEM_PROMPT_FILE:-}" ] || { echo "pi adapter: MOSAIC_SYSTEM_PROMPT_FILE is required" >&2; exit 2; }
[ -n "${MOSAIC_REQUEST:-}" ] || { echo "pi adapter: MOSAIC_REQUEST is required" >&2; exit 2; }
[ -r "$MOSAIC_SYSTEM_PROMPT_FILE" ] || { echo "pi adapter: system prompt not readable: $MOSAIC_SYSTEM_PROMPT_FILE" >&2; exit 2; }
: "${PI_PROVIDER:?pi adapter: PI_PROVIDER is required}"
: "${PI_MODEL:?pi adapter: PI_MODEL is required}"
# Workspace (M5): run inside the provided workspace when present.
if [ -n "${MOSAIC_WORKSPACE:-}" ]; then
mkdir -p "$MOSAIC_WORKSPACE"
cd "$MOSAIC_WORKSPACE"
fi
# Capabilities (M5): explicit allowlist or no tools.
TOOLS_FLAG="--no-tools"
[ -n "${MOSAIC_TOOLS:-}" ] && TOOLS_FLAG="--tools $MOSAIC_TOOLS"
# All flags documented in the pi package README (CLI Reference):
# -p/--print noninteractive: print the response and exit
# --system-prompt replace the default prompt with the generated one
# --no-* no ambient context/skills/extensions/templates/themes
# --no-session ephemeral; TOOLS_FLAG per capabilities
# --offline no startup network operations (update checks/telemetry)
exec pi \
--offline \
--no-session \
--no-extensions \
--no-skills \
--no-prompt-templates \
--no-themes \
--no-context-files \
$TOOLS_FLAG \
--provider "$PI_PROVIDER" \
--model "$PI_MODEL" \
--system-prompt "$(cat "$MOSAIC_SYSTEM_PROMPT_FILE")" \
-p "$MOSAIC_REQUEST"