# io.github.dropflyai/fitfly-engine

Deterministic fitness coaching engine: adaptive programs, progression math, readiness autoregulation

- **Type:** MCP server
- **Trust:** 60/100 (B), scored on the content rubric
- **Verification:** community-indexed — nobody has claimed this listing
- **Version:** 0.2.0
- **Author:** io.github.dropflyai
- **License:** Unknown
- **Endpoints:** streamable-http https://workout-engine-production-5dd7.up.railway.app/mcp
- **Source:** https://workout-engine-production-5dd7.up.railway.app/connect
- **Endpoint health:** reachable (last checked 2026-09-17T07:36:14.201Z, 4 samples) — uptime is not a security property and is not part of the trust score
- **Compatible clients:** claude-code, cursor, copilot, chatgpt, gemini (basis: transport)

## Trust

60/100 (B), scored on the content rubric
- Publisher verified: no
- Install scripts: nothing suspicious found
- Prompt-injection scan: clean
- Obfuscation scan: clean
- Evidence age: 17 days

## Security scan

- **Status:** clean
- **Scanned:** 2026-09-08T11:44:50.085Z
- **Version scanned:** live
- **CVEs:** no coverage — this entry has no package coordinates to query OSV against, so "no known CVEs" is NOT asserted for it.

## Tools

10 declared. Observed from a live `tools/list` probe.
- `get_todays_session` — Today's workout: exercises, sets/reps, per-exercise load guidance and concrete target weights, plus nutrition targets and cycle status. Auto-applies the user's 
- `readiness_checkin` — Record how the athlete feels today (energy, sleep, soreness — each 1–5). The engine scores readiness and, on the next get_todays_session, reshapes the workout a
- `log_workout` — Record what the athlete actually lifted. The engine runs progression (double-progression, e1RM), detects PRs, and returns per-exercise outcomes (established/pro
- `list_swap_options` — Valid alternatives for an exercise — same muscle group, filtered to the athlete's equipment/level/injuries. Use before swap_exercise.
- `swap_exercise` — Replace an exercise with a valid same-area alternative. scope 'today' = just this session; scope 'program' = going forward. The new lift starts fresh (day-one c
- `get_program` — The athlete's current multi-day program (render-ready).
- `regenerate_program` — Rebuild the whole program from the stored profile (~20s AI generation). Use after a profile change or a plateau.
- `nutrition_targets` — The athlete's daily calorie + macro targets, computed from body stats, activity, and goal.
- `meal_plan` — A day of meals hitting the athlete's targets, USDA truth-checked (flags feasible=false with a note when macros are approximate). Slow (~15s AI call).
- `changelog` — The 'what changed & why' feed — the engine's coaching decisions (volume bumps, deloads, swaps) in Coach Fly's voice. Use to explain to the athlete why their pla

## Install

**Verdict: review** — Installable, but 2 things to check first: No CVE coverage: this entry has no npm/PyPI coordinates to query OSV against, so "no known vulnerabilities" is not a claim that can be made about it.
**Cautions** (coverage gaps and advisories — never blocking)
- No CVE coverage: this entry has no npm/PyPI coordinates to query OSV against, so "no known vulnerabilities" is not a claim that can be made about it.
- No publisher has proved control of this listing; it is indexed, not vouched for.
**Config** (claude-code):
```json
"{\n  \"mcpServers\": {\n    \"fitfly-engine\": {\n      \"type\": \"http\",\n      \"url\": \"https://workout-engine-production-5dd7.up.railway.app/mcp\"\n    }\n  }\n}"
```

## Blast radius

Contained to moderate — no credential declaration found, from the publisher, the upstream registry, or the README. Known so far: runs on someone else's infrastructure; read-only tool surface.
- Floor 9, ceiling 27 (tier: unknown)
- `unknown` means the floor and ceiling land in different bands — not measured enough to name one. It does not mean low.
- This is impact, not likelihood. A high radius is not a defect: a filesystem server is supposed to write files. It is never part of the trust score.

## Machine-readable views of this entry

- Signed JSON: https://forgeregistry.com/api/v1/packages/io.github.dropflyai%2Ffitfly-engine
- Install plan: https://forgeregistry.com/api/v1/packages/io.github.dropflyai%2Ffitfly-engine/install-plan
- Alternatives: https://forgeregistry.com/api/v1/alternatives/io.github.dropflyai%2Ffitfly-engine
- HTML page: https://forgeregistry.com/registry/io.github.dropflyai%2Ffitfly-engine
- MCP: POST https://forgeregistry.com/api/mcp → `forge_get_package` / `forge_install_plan`

## About this document

Generated by Forge (https://forgeregistry.com) — a compact rendering of the same record served, signed, at the JSON URL above. Trust and scan facts are the registry's own measurements; anything Forge did not measure is named as unmeasured rather than omitted.