scripts/meeting_cost_calculator.py
8.0 KB| 1 | #!/usr/bin/env python3 |
| 2 | """meeting_cost_calculator.py — Price a meeting in real dollars and gate whether it should exist. |
| 3 | |
| 4 | The `meetings` skill's first discipline: a meeting is a purchase. This script prices it |
| 5 | (attendees x minutes x hourly rate, optionally + a 23-minute refocus overhead per attendee, |
| 6 | per Gloria Mark's interruption-recovery research) and then applies the should-this-exist gate: |
| 7 | |
| 8 | 1. Is there a DECISION to make? (--has-decision) -> without one, it's a status update |
| 9 | 2. Is there an AGENDA? (--has-agenda) -> without one, nobody can prepare |
| 10 | 3. Is there a named meeting OWNER? (--has-owner) -> without one, nobody is accountable |
| 11 | |
| 12 | Verdicts: |
| 13 | ASYNC — no decision needed. Send a memo/thread instead. The cheapest meeting is no meeting. |
| 14 | NOT-READY — a decision exists but the agenda and/or owner is missing (named explicitly). |
| 15 | MEET — decision + agenda + owner all present. Cost printed, plus a cost-per-minute line |
| 16 | so agenda timeboxes get budgeted like money. |
| 17 | |
| 18 | NO LLM CALLS. Pure arithmetic + thresholds. Stdlib only. Never sends or schedules anything. |
| 19 | |
| 20 | Usage: |
| 21 | python meeting_cost_calculator.py --attendees 6 --minutes 60 --avg-rate 90 \ |
| 22 | --include-refocus --has-decision --has-agenda --has-owner |
| 23 | python meeting_cost_calculator.py --attendees 8 --minutes 30 # no decision -> ASYNC |
| 24 | python meeting_cost_calculator.py --sample |
| 25 | python meeting_cost_calculator.py --sample --json |
| 26 | """ |
| 27 | |
| 28 | import argparse |
| 29 | import json |
| 30 | import sys |
| 31 | from typing import Any, Dict, List |
| 32 | |
| 33 | REFOCUS_MINUTES = 23 # avg time to refocus after a context switch (Gloria Mark, UC Irvine) |
| 34 | |
| 35 | EPILOG = """\ |
| 36 | exit codes: |
| 37 | 0 MEET — decision + agenda + owner present; cost printed |
| 38 | 1 usage error — bad or missing flags (never a verdict) |
| 39 | 2 ASYNC — no decision needed; recommend a memo/thread instead of a meeting |
| 40 | 3 NOT-READY — decision exists but agenda and/or owner missing (named in output) |
| 41 | |
| 42 | --help and --sample always exit per the verdict rules above (--sample is a MEET scenario, exit 0). |
| 43 | """ |
| 44 | |
| 45 | |
| 46 | def evaluate(attendees: int, minutes: int, avg_rate: float, include_refocus: bool, |
| 47 | has_decision: bool, has_agenda: bool, has_owner: bool) -> Dict[str, Any]: |
| 48 | direct_cost = round(attendees * (minutes / 60.0) * avg_rate, 2) |
| 49 | refocus_cost = round(attendees * (REFOCUS_MINUTES / 60.0) * avg_rate, 2) if include_refocus else 0.0 |
| 50 | total_cost = round(direct_cost + refocus_cost, 2) |
| 51 | cost_per_minute = round(total_cost / minutes, 2) if minutes else 0.0 |
| 52 | |
| 53 | missing: List[str] = [] |
| 54 | if not has_agenda: |
| 55 | missing.append("agenda") |
| 56 | if not has_owner: |
| 57 | missing.append("meeting owner") |
| 58 | |
| 59 | if not has_decision: |
| 60 | verdict, exit_code = "ASYNC", 2 |
| 61 | headline = ( |
| 62 | "No decision to make -> this is a status update, not a meeting. " |
| 63 | f"Send it as a memo/thread and save the ${total_cost:,.2f}. " |
| 64 | "The cheapest meeting is the one you don't hold." |
| 65 | ) |
| 66 | elif missing: |
| 67 | verdict, exit_code = "NOT-READY", 3 |
| 68 | headline = ( |
| 69 | "A decision exists, but the meeting is not ready to be called. " |
| 70 | f"Missing: {' and '.join(missing)}. " |
| 71 | "Fix that, re-run the gate, and only then send the invite." |
| 72 | ) |
| 73 | else: |
| 74 | verdict, exit_code = "MEET", 0 |
| 75 | headline = ( |
| 76 | "Gate passed: decision + agenda + owner. This meeting has earned its slot. " |
| 77 | f"It costs ${total_cost:,.2f} — budget the agenda timeboxes like money." |
| 78 | ) |
| 79 | |
| 80 | return { |
| 81 | "inputs": { |
| 82 | "attendees": attendees, |
| 83 | "minutes": minutes, |
| 84 | "avg_rate_per_hour": avg_rate, |
| 85 | "include_refocus": include_refocus, |
| 86 | "has_decision": has_decision, |
| 87 | "has_agenda": has_agenda, |
| 88 | "has_owner": has_owner, |
| 89 | }, |
| 90 | "direct_cost": direct_cost, |
| 91 | "refocus_cost": refocus_cost, |
| 92 | "refocus_minutes_per_attendee": REFOCUS_MINUTES if include_refocus else 0, |
| 93 | "total_cost": total_cost, |
| 94 | "cost_per_minute": cost_per_minute, |
| 95 | "missing": missing, |
| 96 | "verdict": verdict, |
| 97 | "exit_code": exit_code, |
| 98 | "headline": headline, |
| 99 | } |
| 100 | |
| 101 | |
| 102 | def render_human(r: Dict[str, Any]) -> str: |
| 103 | i = r["inputs"] |
| 104 | out: List[str] = [] |
| 105 | out.append("Meeting Cost Gate (should this meeting exist?)") |
| 106 | out.append("=" * 64) |
| 107 | out.append(f" Attendees: {i['attendees']} Length: {i['minutes']} min " |
| 108 | f"Rate: ${i['avg_rate_per_hour']:,.0f}/hr") |
| 109 | out.append(f" Direct cost: ${r['direct_cost']:>10,.2f} " |
| 110 | f"({i['attendees']} x {i['minutes']} min x ${i['avg_rate_per_hour']:,.0f}/hr)") |
| 111 | if i["include_refocus"]: |
| 112 | out.append(f" Refocus cost: ${r['refocus_cost']:>10,.2f} " |
| 113 | f"({REFOCUS_MINUTES} min refocus overhead per attendee)") |
| 114 | out.append(f" TOTAL COST: ${r['total_cost']:>10,.2f}") |
| 115 | out.append("") |
| 116 | out.append(f" Gate: decision={'yes' if i['has_decision'] else 'NO'} | " |
| 117 | f"agenda={'yes' if i['has_agenda'] else 'NO'} | " |
| 118 | f"owner={'yes' if i['has_owner'] else 'NO'}") |
| 119 | out.append("") |
| 120 | out.append(f" VERDICT: {r['verdict']}") |
| 121 | out.append(f" {r['headline']}") |
| 122 | if r["verdict"] == "MEET": |
| 123 | out.append("") |
| 124 | out.append(f" Every minute of this meeting costs ${r['cost_per_minute']:,.2f} — " |
| 125 | "price each agenda topic's timebox against that.") |
| 126 | return "\n".join(out) |
| 127 | |
| 128 | |
| 129 | SAMPLE = dict(attendees=6, minutes=60, avg_rate=90.0, include_refocus=True, |
| 130 | has_decision=True, has_agenda=True, has_owner=True) |
| 131 | |
| 132 | |
| 133 | def main(argv: List[str]) -> int: |
| 134 | p = argparse.ArgumentParser( |
| 135 | description="Price a meeting and gate whether it should exist (ASYNC / NOT-READY / MEET).", |
| 136 | formatter_class=argparse.RawDescriptionHelpFormatter, |
| 137 | epilog=EPILOG, |
| 138 | ) |
| 139 | p.add_argument("--attendees", type=int, help="Number of attendees") |
| 140 | p.add_argument("--minutes", type=int, help="Scheduled meeting length in minutes") |
| 141 | p.add_argument("--avg-rate", type=float, default=90.0, |
| 142 | help="Average fully-loaded hourly rate per attendee in dollars (default: 90)") |
| 143 | p.add_argument("--include-refocus", action="store_true", |
| 144 | help=f"Add a {REFOCUS_MINUTES}-minute refocus overhead per attendee to the cost") |
| 145 | p.add_argument("--has-decision", action="store_true", |
| 146 | help="A specific decision will be made in this meeting") |
| 147 | p.add_argument("--has-agenda", action="store_true", |
| 148 | help="A timeboxed agenda with desired outcomes exists") |
| 149 | p.add_argument("--has-owner", action="store_true", |
| 150 | help="A named meeting owner is accountable for outcome + follow-through") |
| 151 | p.add_argument("--sample", action="store_true", help="Run the embedded sample (a MEET scenario)") |
| 152 | p.add_argument("--json", action="store_true", help="Emit machine-readable JSON instead of text") |
| 153 | args = p.parse_args(argv) |
| 154 | |
| 155 | if args.sample: |
| 156 | vals = dict(SAMPLE) |
| 157 | elif args.attendees is not None and args.minutes is not None: |
| 158 | if args.attendees < 1 or args.minutes < 1: |
| 159 | print("error: --attendees and --minutes must both be >= 1", file=sys.stderr) |
| 160 | return 1 |
| 161 | vals = dict(attendees=args.attendees, minutes=args.minutes, avg_rate=args.avg_rate, |
| 162 | include_refocus=args.include_refocus, has_decision=args.has_decision, |
| 163 | has_agenda=args.has_agenda, has_owner=args.has_owner) |
| 164 | else: |
| 165 | p.print_help() |
| 166 | print("\nerror: provide --attendees and --minutes, or --sample", file=sys.stderr) |
| 167 | return 1 |
| 168 | |
| 169 | result = evaluate(**vals) |
| 170 | if args.json: |
| 171 | print(json.dumps(result, indent=2)) |
| 172 | else: |
| 173 | print(render_human(result)) |
| 174 | return result["exit_code"] |
| 175 | |
| 176 | |
| 177 | if __name__ == "__main__": |
| 178 | sys.exit(main(sys.argv[1:])) |
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