# Changelog

Platform changes that affect what you can do. Internal refactors, performance work and dependency updates are not listed.

## August 2026 — MCP server

External AI clients can now read your record.

- **MCP server** at `POST /api/mcp`, stateless JSON-RPC over HTTP, with sixteen read-only tools. Claude Code, Claude Desktop and Cursor all connect directly. See [MCP server](/docs/mcp).
- **Warehouse tools** — six tools available only over MCP that return raw analytical evidence rather than a precomputed verdict: the daily feature matrix, the correlation graph as structured edges, all-time facts, statistical models and narrative summaries. These let a client test a hypothesis the nightly engine never considered.
- **API tokens** — revocable machine credentials with explicit `read` and `write` scopes, stored as hashes, managed with the [token scripts](/docs/token-scripts).
- **This documentation site**, with the tool and metric references generated directly from source so they cannot drift.

## Mid 2026 — deeper analysis

- **Unified correlation engine** spanning habits, nutrition, WHOOP, bloodwork and genetics in one graph, with partial-correlation controls, autocorrelation-adjusted significance and multiple-testing correction.
- **On-demand relationship analysis** for any two metrics, applying the same statistical guards, always labelled a hypothesis.
- **Insights engine** — readiness scoring, lead-lag detection, goal ETA with Monte Carlo confidence bands, streak survival curves, training load, HRV baseline, dose-response curves, changepoint detection.
- **User fact index** derived from the metric registry, which fixed a real class of error: personal records that only reflected the most recent thirty days.
- **Metric registry** as the single source of truth for metric semantics, replacing definitions that had been copy-pasted across five modules and drifted apart.

## Early 2026 — health modules

- **Bloodwork.** Upload lab PDFs, extract markers, track trends against reference ranges, correlate against daily behaviour over biologically plausible windows.
- **Methylation genetics.** One-time genetic profile with pathway view, clusters, genetically predicted watch markers cross-linked to your labs, and priors that get tested rather than asserted.
- **WHOOP webhooks**, so recovery scores appear within minutes instead of at the next scheduled pull.
- **Data-quality gating** for WHOOP calibration periods and nights with sensor gaps — visible in the ledger, excluded from analysis.
- **Mission Statement** — one goal, three commitments, with progress and causality analysis.

## Late 2025 — the coach

- **Context Engine 2.0** — temporal awareness, momentum detection, lifecycle stage, profile gap discovery.
- **Smart payload** — question classification driving model choice, reasoning effort and context size.
- **Learnings system** — bidirectional extraction, semantic deduplication, decay, consolidation, bounded storage.
- **Voice agent** over a realtime speech model, with unified, chat, data-entry and onboarding modes.
- **Prompt injection defense** on the AI endpoints.
- **Hybrid retrieval** — vector search and full-text search fused and reranked.

## Related

- [Overview](/docs/overview) — what the platform does today