Files
stack/src/run-agent.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
# One-shot agent dispatcher inside the container.
#
# 1. Loads the contract-generated system prompt (contracts + optional
# mission section from MOSAIC_MISSION_FILE).
# 2. Dispatches to /opt/mosaic/adapters/<MOSAIC_ADAPTER>/adapter.sh per
# the contract in /opt/mosaic/adapters/README.md.
set -eu
REQUEST="${*:-Return your startup marker and nothing else.}"
ADAPTER="${MOSAIC_ADAPTER:-pi}"
case "$ADAPTER" in
# Allowlist mirrors scripts/mosaic-config.mjs; pattern check first so a
# crafted name cannot escape the adapters directory.
*[!A-Za-z0-9._-]*|'')
echo "run-agent: invalid adapter name: '$ADAPTER'" >&2
exit 2
;;
esac
ADAPTER_SCRIPT="/opt/mosaic/adapters/$ADAPTER/adapter.sh"
if [ ! -x "$ADAPTER_SCRIPT" ]; then
echo "run-agent: unknown or non-executable adapter: $ADAPTER" >&2
exit 2
fi
/opt/mosaic/src/load-contracts.sh /opt/mosaic/contracts /var/lib/mosaic/system-prompt.md
export MOSAIC_SYSTEM_PROMPT_FILE="/var/lib/mosaic/system-prompt.md"
export MOSAIC_REQUEST="$REQUEST"
exec "$ADAPTER_SCRIPT"