# Consistency Calendar

> Consistency Calendar (https://consistencycalendar.com) is an MCP server + hosted calendar app. A user tells their AI assistant (Claude, ChatGPT, Copilot, or any MCP-capable client) a goal with a deadline — a race, an exam, a savings target, a life event, a project — and the assistant provisions a private, gamified, evidence-based execution calendar: phase-structured sessions with real content, if-then anchored daily habits, weekly budgets and metrics with guide curves, streaks, XP and progress charts. Free to create, with 2 free AI plan revisions per calendar; tracking is never paywalled.

## Connect (for agents and users)

- MCP endpoint (Streamable HTTP, no auth required to start): https://consistencycalendar.com/mcp
- Claude (claude.ai / desktop): Settings → Connectors → Add custom connector → paste the URL
- Claude Code: `claude mcp add --transport http consistency-calendar https://consistencycalendar.com/mcp`
- ChatGPT: Settings → Connectors (developer mode) → add remote MCP server
- Other clients / stdio bridge: `npx mcp-remote https://consistencycalendar.com/mcp`

## Tool flow (for agents)

1. `list_templates` — see sprint templates (endurance-race, exam-cert, savings-goal, life-event, custom)
2. `get_template_guide` — interview checklist, evidence-based constraints, spec skeleton, decline criteria
3. `validate_spec` — validate a draft SprintSpec; fix every error (machine-readable, with fix hints)
4. `create_calendar` — returns the user's private calendar_url + admin_token (keep it to revise later)
5. `get_status` — structured progress (28-day execution, streaks, misses, metric vs guide) for coaching
6. `revise_calendar` — replace the plan when life changes; user ticks/history survive (2 free, then Sprint Pass)

Calendars are private capability URLs — never index or share them. Safety: the compiler enforces rest days, habit caps, safe metric slopes; guides include decline criteria for medical/disordered-eating/financial-advice requests.

## The science (research-backed pages)

- [Implementation intentions](https://consistencycalendar.com/science/implementation-intentions): if-then planning roughly doubles follow-through (Gollwitzer & Sheeran meta-analysis)
- [How long habits take](https://consistencycalendar.com/science/habit-formation-66-days): median 66 days to automaticity; single misses don't matter (Lally et al.)
- [Why tracking works](https://consistencycalendar.com/science/progress-tracking): progress monitoring improves attainment across 138 RCTs (Harkin et al.)
- [Goal setting](https://consistencycalendar.com/science/goal-setting): specific, dated, challenging goals + feedback (Locke & Latham)
- [Streaks & consistency](https://consistencycalendar.com/science/streaks-and-consistency): flexible 80% consistency beats rigid streaks (Sharif & Shu; Polivy & Herman)
- [Fresh start effect](https://consistencycalendar.com/science/fresh-start-effect): temporal landmarks spike motivation (Dai, Milkman & Riis)
- [Retrieval practice & spacing](https://consistencycalendar.com/science/retrieval-practice-spaced-repetition): testing and spacing beat re-reading (Roediger & Karpicke; Cepeda)
- [Tapering](https://consistencycalendar.com/science/tapering-for-race-day): cut volume ~40–60% before racing (Bosquet et al. meta-analysis)
- [Saving psychology](https://consistencycalendar.com/science/psychology-of-saving-money): automate first — Save More Tomorrow (Thaler & Benartzi)

## Notes

- Pricing: free (create + track + 2 revisions) · Sprint Pass £7 one-off per calendar (unlimited revisions, share page — coming soon) · Pro £4/mo (multiple calendars, duo sprints — coming soon)
- Not medical, coaching or financial advice. 16+.