Files
stack/adapters/pi/adapter.sh
T
jason.woltje bb5cecb348 feat(adapters): adapter contract, dispatch, pi + mock adapters (#16)
- adapters/README.md: the harness boundary contract (env in, response on
  stdout, diagnostics stderr, exit 0 success)
- adapters/pi: extracted current invocation unchanged
- adapters/mock: deterministic MOSAIC_MOCK_RESPONSE echo (test-only)
- run-agent.sh: name-validated dispatch to adapters/<name>/adapter.sh
- config: optional execution.adapter (pi|mock), default pi, configVersion
  stays 1 — existing configs remain valid; selection authority is the
  config file (load_config exports it)
- compose: MOSAIC_ADAPTER / MOSAIC_MOCK_RESPONSE passthrough; Containerfile
  installs adapters read-only; RELEASE -> 0.0.5

Verified: hello unchanged; mock verbatim via config; unknown adapter and
path-traversal names refused in-container; invalid adapter exits 2.

Closes #16
2026-09-02 21:18:07 -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}"
: "${PI_MODEL:?pi adapter: PI_MODEL is required}"
# All flags documented in the pi package README (CLI Reference):
# -p/--print noninteractive: print the response and exit
# --system-prompt replace the default prompt with the generated one
# --no-* no ambient context/skills/extensions/templates/themes
# --no-session ephemeral; --no-tools this runtime needs no tools
# --offline no startup network operations (update checks/telemetry)
exec pi \
--offline \
--no-session \
--no-extensions \
--no-skills \
--no-prompt-templates \
--no-themes \
--no-context-files \
--no-tools \
--provider "$PI_PROVIDER" \
--model "$PI_MODEL" \
--system-prompt "$(cat "$MOSAIC_SYSTEM_PROMPT_FILE")" \
-p "$MOSAIC_REQUEST"