Files
stack/adapters/claude/adapter.sh
T
jason.woltjeandClaude Opus 5.5 11dae0c7d8 feat(bus): the bus host runs an explicit Claude Code binary (#1561, row 68)
MOSAIC_CLAUDE_BIN names the claude binary by absolute path instead of
finding it on PATH. scripts/bus-service.sh render|install --claude PATH
writes it into the unit (default: command -v claude in the installing
shell); the claude adapter, the launcher's version read and the seat
session environment all use it. Mos's Q18 ask: the unit's PATH found
/usr/bin/claude 2.1.259, which refuses claude-opus-5-5.

Candidate: round 2 manifest 21c1ab05, round 1 (a2008d8b) rebased onto
f2f2861b after row 55 changed docs/TOOLS.md and packages/cli/README.md;
the changed lines are byte-identical. Approved by Filbert (27349, 27374)
and Dewey (27350, 27375). Sage's gate on f2f2861b plus the patch: cli
112, seat 27, harness 57, nine scripts/test-*.sh 0 failed, Docker on.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-11 16:42:23 -05:00

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#!/bin/sh
# Claude Code adapter: implements the Mosaic adapter contract for the host's
# `claude` CLI, for managed sessions (slice 1 S6). Headless only. The CLI is
# MOSAIC_CLAUDE_BIN when set (the bus unit pins it), else `claude` on PATH.
#
# Contract: see adapters/README.md.
# stdout = the turn's answer only; stderr = diagnostics; exit 0 on success.
#
# The layers this relies on are row S0 lines 1-5 (docs/plans/2026-10-04_slice-1.md,
# "What S6 can rely on"): the PreToolUse command hook in MOSAIC_CLAUDE_SETTINGS,
# wrapped as `timeout -k 2 10 <gate> || exit 2`, and the tool limit (--tools).
# --bare is never passed: it turns settings hooks off.
set -eu
need() {
eval "v=\${$1:-}"
[ -n "$v" ] || { echo "claude adapter: $1 is required" >&2; exit 2; }
}
need MOSAIC_SYSTEM_PROMPT_FILE
need MOSAIC_REQUEST
need MOSAIC_WORKSPACE
need MOSAIC_SESSION_DIR
need MOSAIC_MODEL
need MOSAIC_CLAUDE_SETTINGS
need MOSAIC_CLAUDE_MCP_CONFIG
for f in "$MOSAIC_SYSTEM_PROMPT_FILE" "$MOSAIC_CLAUDE_SETTINGS" "$MOSAIC_CLAUDE_MCP_CONFIG"; do
[ -r "$f" ] || { echo "claude adapter: not readable: $f" >&2; exit 2; }
done
[ "${MOSAIC_INTERACTIVE:-}" != "1" ] || { echo "claude adapter: interactive mode isn't supported" >&2; exit 2; }
CLAUDE=claude
if [ -n "${MOSAIC_CLAUDE_BIN:-}" ]; then
case "$MOSAIC_CLAUDE_BIN" in
/*) ;;
*) echo "claude adapter: MOSAIC_CLAUDE_BIN must be an absolute path: $MOSAIC_CLAUDE_BIN" >&2; exit 2 ;;
esac
[ -f "$MOSAIC_CLAUDE_BIN" ] && [ -x "$MOSAIC_CLAUDE_BIN" ] || { echo "claude adapter: MOSAIC_CLAUDE_BIN is not an executable file: $MOSAIC_CLAUDE_BIN" >&2; exit 2; }
CLAUDE=$MOSAIC_CLAUDE_BIN
fi
mkdir -p "$MOSAIC_WORKSPACE" "$MOSAIC_SESSION_DIR"
cd "$MOSAIC_WORKSPACE"
# Session: the first turn names a new session id, later turns resume it.
# The id is kept only after a turn succeeds, so a failed first turn never
# leaves a --resume of a session that doesn't exist.
ID_FILE="$MOSAIC_SESSION_DIR/claude-session-id"
if [ -s "$ID_FILE" ]; then
SESSION_FLAG=--resume
SESSION_ID=$(cat "$ID_FILE")
else
SESSION_FLAG=--session-id
SESSION_ID=$(cat /proc/sys/kernel/random/uuid)
fi
# Flags:
# -p one-shot: print the answer and exit
# --output-format text stdout is the answer only
# --system-prompt the generated prompt replaces the default
# --restricted no user/project/local settings files; --settings
# (the gate hook) still applies; no code-running
# tool unless --tools names it; file tools confined
# to the working directory; no CLAUDE.md file or
# auto-memory in the prompt. The S0 lines above
# don't depend on it, but it is what keeps founder
# and repository memory out; a test fails without it.
# --tools the built-in tool limit (S0 line 5); empty = none
# --allowedTools the same tools plus the mosaic MCP server, so
# --permission-mode dontAsk nothing waits on a prompt and anything else is denied
# --settings the gate hook (S0 lines 1-4)
# --strict-mcp-config only the bundle's MCP server, which serves the
# --mcp-config typed bus tools
# --disable-slash-commands no skills (the bundle lists none)
ALLOWED=mcp__mosaic
[ -z "${MOSAIC_TOOLS:-}" ] || ALLOWED="$MOSAIC_TOOLS,mcp__mosaic"
PROMPT_CONTENT="$(cat "$MOSAIC_SYSTEM_PROMPT_FILE")"
"$CLAUDE" -p "$MOSAIC_REQUEST" \
--output-format text \
--system-prompt "$PROMPT_CONTENT" \
--model "$MOSAIC_MODEL" \
--restricted \
--tools "${MOSAIC_TOOLS:-}" \
--allowedTools "$ALLOWED" \
--permission-mode dontAsk \
--settings "$MOSAIC_CLAUDE_SETTINGS" \
--strict-mcp-config \
--mcp-config "$MOSAIC_CLAUDE_MCP_CONFIG" \
--disable-slash-commands \
"$SESSION_FLAG" "$SESSION_ID" || exit $?
[ "$SESSION_FLAG" = --resume ] || printf '%s\n' "$SESSION_ID" > "$ID_FILE"