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83 lines
2.8 KiB
Bash
Executable File
83 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# MEMPALACE CURSOR WAKE HOOK — Session-start memory recall
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#
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# Cursor "sessionStart" hook. This is a Cursor-only capability —
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# Claude Code's third-party-hooks compatibility layer does not have
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# an equivalent event with the same "inject context into the agent's
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# initial system message" semantics.
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#
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# Behaviour:
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# 1. Parse Cursor's sessionStart payload (conversation_id /
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# session_id, is_background_agent, composer_mode, plus the
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# common workspace_roots field).
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# 2. Infer the wing from basename(workspace_roots[0]).
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# 3. Return {"additional_context": "..."} instructing the agent to
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# scope its memory recall by calling mempalace_search +
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# mempalace_diary_read with wing=<inferred>.
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#
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# sessionStart is documented as fire-and-forget — Cursor does not
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# enforce a blocking response and does not consume "continue" /
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# "user_message" — but "additional_context" is honoured and added to
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# the conversation's initial system context. Verified in
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# cursor.com/docs/hooks.md (fetched 2026-05-27).
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#
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# === INSTALL ===
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#
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# Add to ~/.cursor/hooks.json (or .cursor/hooks.json for project
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# scope) under "sessionStart":
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#
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# {
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# "version": 1,
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# "hooks": {
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# "sessionStart": [
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# { "command": "/absolute/path/to/mempal_wake_hook_cursor.sh" }
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# ]
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# }
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# }
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_mempal_self="${BASH_SOURCE[0]:-$0}"
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_mempal_dir="$(cd "$(dirname "$_mempal_self")" 2>/dev/null && pwd)"
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# shellcheck source=lib/common.sh
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. "$_mempal_dir/lib/common.sh"
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if mempal_is_disabled; then
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mempal_emit '{}'
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exit 0
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fi
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INPUT="$(cat)"
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mempal_parse_stdin "$INPUT"
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if [ "$MEMPAL_PARSE_OK" != "1" ]; then
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mempal_dump_bad_input "$INPUT" "sessionStart"
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mempal_emit '{}'
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exit 0
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fi
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WING="$(mempal_infer_wing "$MEMPAL_WORKSPACE")"
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mempal_log "sessionStart" "$MEMPAL_CONV_ID" \
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"workspace=$MEMPAL_WORKSPACE wing=$WING"
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# Emit the additional_context payload via Python -c (rather than a
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# heredoc) so the JSON encoding survives wings whose name contains
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# characters that would otherwise need shell escaping, and so the
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# inferred wing arrives as an argv positional. The MCP tool names
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# referenced here are verified against mempalace/mcp_server.py:
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# mempalace_search and mempalace_diary_read both exist and accept
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# the wing parameter.
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"$MEMPAL_PYTHON_BIN" -c '
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import json, sys
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wing = sys.argv[1] if len(sys.argv) > 1 else "cursor_session"
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ctx = (
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"MemPalace wake-up. The Cursor workspace maps to wing=" + wing + ". "
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"Before answering anything that touches past work in this "
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"project, call mempalace_search (wing=" + wing + ", "
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"query=<relevant keywords>) and mempalace_diary_read "
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"(agent_name=cursor-ide, wing=" + wing + ", last_n=10). "
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"Use what you find verbatim where it answers the question; "
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"never summarise the user'"'"'s own words."
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)
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print(json.dumps({"additional_context": ctx}))
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' "$WING"
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