Parabolic Short Trade Planner Skill for Claude

Overview

Generate Qullamaggie-style Parabolic Short watchlists and conditional

pre-market plans for US equities. The skill never sends orders. It emits

JSON + Markdown that a human reviews against their broker before entry.

Three phases:

• Phase 1 (screen_parabolic.py): pulls EOD bars + company profile

from FMP, applies hard invalidation rules (mode-aware), scores

survivors on 5 factors (weights 30/25/20/15/10), and assigns A/B/C/D

grades.

• Phase 2 (generate_pre_market_plan.py): takes the Phase 1 JSON,

filters by --tradable-min-grade (default B), checks Alpaca short

inventory (or ManualBrokerAdapter), evaluates SEC Rule 201 SSR

state from the inherited prior-day close, and renders three trigger

plans per candidate.

• Phase 3 (monitor_intraday_trigger.py): reads the Phase 2 plan,

fetches 5-min bars (Alpaca live or fixture), walks each plan's FSM

forward by one step, persists per-plan state, and writes an

intraday_monitor JSON with state, entry_actual, stop_actual,

and shares_actual (when triggered). One-shot — trader runs it

every 1–5 min via watch or cron; replay-deterministic so re-runs

are byte-identical.

When to Use

Invoke this skill when the user wants to:

• Build a daily Parabolic Short watchlist from S&P 500 (or a custom CSV).
• Translate a watchlist into pre-market trade plans with explicit

borrow / SSR / state-cap gating.

• Audit a candidate's blocking vs advisory manual-confirmation reasons

before placing an order at Alpaca.

Do NOT invoke for:

• Long-side momentum screening — use vcp-screener or canslim-screener.
• 1-minute / sub-minute intraday signals — Phase 3 evaluates 5-min

bars only.

• Live order routing — this skill is detection-only by design;

Phase 3 emits a triggered state with concrete entry/stop/share

count, but the trader fires the order manually.

Workflow

Phase 1 — daily screener

• Confirm FMP_API_KEY is set (env var or --api-key).
• Run with the safer-by-default mode:

   python3 skills/parabolic-short-trade-planner/scripts/screen_parabolic.py \
     --mode safe_largecap --as-of 2026-04-30 --output-dir reports/

• Inspect reports/parabolic_short_<date>.md — the watchlist is grouped

by grade (A→D).

• Promote interesting names to Phase 2.

For small-cap blow-offs, switch to --mode classic_qm (looser market

cap and ADV floors, higher 5-day ROC threshold).

For testing without the API, run --dry-run --fixture <path> against a

JSON fixture (one is shipped at scripts/tests/fixtures/dry_run_minimal.json).

Phase 2 — pre-market plan generator

• Optional: set ALPACA_API_KEY / ALPACA_SECRET_KEY for live borrow

checks. Without them the planner falls back to ManualBrokerAdapter,

which marks every candidate as borrow_inventory_unavailable /

plan_status: watch_only.

• Run:

   python3 skills/parabolic-short-trade-planner/scripts/generate_pre_market_plan.py \
     --candidates-json reports/parabolic_short_2026-04-30.json \
     --account-size 100000 --risk-bps 50 --output-dir reports/

• Output: reports/parabolic_short_plan_<date>.json. Each plan contains

three entry plans (5min ORL break, first red 5-min, VWAP fail) with

entry_hint / stop_hint formula strings (no baked-in shares — the

trader computes shares at trigger time from the shares_formula).

Phase 3 — intraday trigger monitor

• Confirm ALPACA_API_KEY / ALPACA_SECRET_KEY are set (Phase 3

uses Alpaca market data; data.alpaca.markets works for both

paper and live accounts).

• During US regular session, run one-shot per cadence — typical is

every 60 s during the first 30 min, then every 5 min:

   python3 skills/parabolic-short-trade-planner/scripts/monitor_intraday_trigger.py \
     --plans-json reports/parabolic_short_plan_2026-05-05.json \
     --bars-source alpaca \
     --state-dir state/parabolic_short/ \
     --output-dir reports/

Or wrap in watch -n 60 'python3 ...' / cron.

• Output: reports/parabolic_short_intraday_<date>.json lists every

monitored plan with state (armed / triggered / invalidated

/ FSM-specific), bar-derived transition timestamps, and

size_recipe_resolved (concrete shares_actual) when triggered.

• For testing without the API, use `--bars-source fixture

--bars-fixture <path>` against a JSON fixture

(scripts/tests/fixtures/intraday_bars/).

Phase 3 trigger detection is not an order instruction. Before any manual

short entry, confirm borrow/locate availability, SEC Rule 201 SSR state,

broker short-sale controls, and the broker's current intraday margin or

day-trading controls. FINRA replaced the old pattern-day-trader day-count

and $25,000 minimum-equity requirements with intraday margin standards

effective 2026-06-04, with broker phase-in allowed through 2027-10-20.

Phase 3 is idempotent: each run replays the full session bars

from open up to now_et (or --now-et override), so re-running

during the same minute produces the same state. prior_state is

used only for diff/notification display; it never advances the FSM.

Reviewing a plan before entry

Read three top-level fields per ticker:

• plan_status: actionable (manual gates can be cleared) or

watch_only (hard blockers — borrow unavailable or SSR active).

• blocking_manual_reasons: must all be resolved before pulling the

trigger.

• advisory_manual_reasons: heads-up only, e.g.

manual_locate_required (always set), warning:too_early_to_short,

warning:recent_earnings_catalyst (last earnings within

--earnings-catalyst-window-days, default 10 trading days — flag the

move as event-driven rather than pure technical blow-off).

Earnings-aware screening

Phase 1 fetches the FMP earnings calendar once per run (single call,

not per-symbol) and emits two earnings-aware checks:

• --exclude-earnings-within-days (default 2 calendar days, forward) —

hard invalidation when next earnings is within the window. Matches

the legacy earnings_blackout_days semantic.

• --earnings-catalyst-window-days (default 10 trading days, backward)

— soft warning recent_earnings_catalyst when last earnings is

within the window. Routes to Phase 2 as an advisory manual reason

without forcing trade_allowed_without_manual: false.

Per-candidate output exposes last_earnings_date, next_earnings_date,

trading_days_since_earnings (TRADING days), earnings_within_days

(CALENDAR days, forward), earnings_blackout_days (configured threshold),

and earnings_in_blackout_window. The legacy earnings_within_2d is

kept for backward compatibility.

Top-level dates: as_of is the planning date (Phase 2 contract — never

mutate); run_date mirrors it; market_data_as_of is the latest bar

date used for technical metrics (differs from as_of on weekend runs).

Output Format

Phase 1 JSON: parabolic_short_<as_of>.json (schema_version 1.0).

Phase 2 JSON: parabolic_short_plan_<as_of>.json (schema_version 1.0).

Phase 3 JSON: parabolic_short_intraday_<as_of>.json (schema_version 1.0,

phase = intraday_monitor).

The contract is pinned by tests/test_schema_contract.py plus

tests/test_monitor_intraday_smoke.py for Phase 3.

Resources

• references/parabolic_short_methodology.md — Qullamaggie's 3-trigger

framework and exhaustion signals.

• references/short_invalidation_rules.md — mode-aware exclusion rules.
• references/short_risk_management.md — Rule 201, ETB vs HTB, locate.
• references/intraday_trigger_playbook.md — detail on each trigger

type, the FSM transitions Phase 3 implements, and same-bar tie-break

semantics.

• references/broker_capability_matrix.md — what each broker exposes

through its API for short inventory.