fitfly-engine

io.github.dropflyai/fitfly-engineVersion 0.2.0

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

Status

Responds280 msNov 14, 2026, 14:50 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:50 UTC
Latency: 280 ms
Remotes responding: 1 of 1
Sign-in: API key
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://workout-engine-production-5dd7.up.railway.app/mcpResponds280 msNov 14, 2026, 14:50 UTC

No sign-in

Claude Code

claude mcp add --transport http fitfly-engine https://workout-engine-production-5dd7.up.railway.app/mcp --header 'Authorization: Bearer <YOUR_TOKEN>'

Replace <YOUR_TOKEN> before running.

Claude Desktop and claude.ai

Settings > Connectors > Add custom connector
Name: fitfly-engine
Remote MCP server URL: https://workout-engine-production-5dd7.up.railway.app/mcp
This server expects the header Authorization.

Cursor

{
  "mcpServers": {
    "fitfly-engine": {
      "url": "https://workout-engine-production-5dd7.up.railway.app/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_TOKEN>"
      }
    }
  }
}

Replace <YOUR_TOKEN> before running.

VS Code

code --add-mcp '{"name":"fitfly-engine","type":"http","url":"https://workout-engine-production-5dd7.up.railway.app/mcp","headers":{"Authorization":"Bearer <YOUR_TOKEN>"}}'

Replace <YOUR_TOKEN> before running.

Built your own server? run.zero hosts MCP servers on European infrastructure.

Host your own MCP server on run.zero

Tools

10 tools

Tools of fitfly-engine
	Description		Read-only	Idempotent	Open world
`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 plan evolved.	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 plan evolved.	Not declared	Not declared	Not declared	Not declared
`get_program`The athlete's current multi-day program (render-ready).	The athlete's current multi-day program (render-ready).	Not declared	Not declared	Not declared	Not declared
`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 check-in (autoregulation) if they've done one today. Call this to see what the athlete should do now.	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 check-in (autoregulation) if they've done one today. Call this to see what the athlete should do now.	Not declared	Not declared	Not declared	Not declared
`list_swap_options`Valid alternatives for an exercise — same muscle group, filtered to the athlete's equipment/level/injuries. Use before swap_exercise.	Valid alternatives for an exercise — same muscle group, filtered to the athlete's equipment/level/injuries. Use before swap_exercise.	Not declared	Not declared	Not declared	Not declared
`log_workout`Record what the athlete actually lifted. The engine runs progression (double-progression, e1RM), detects PRs, and returns per-exercise outcomes (established/progressed/held/deloaded) with next-time targets. Weights are in kg.	Record what the athlete actually lifted. The engine runs progression (double-progression, e1RM), detects PRs, and returns per-exercise outcomes (established/progressed/held/deloaded) with next-time targets. Weights are in kg.	Not declared	Not declared	Not declared	Not declared
`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).	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).	Not declared	Not declared	Not declared	Not declared
`nutrition_targets`The athlete's daily calorie + macro targets, computed from body stats, activity, and goal.	The athlete's daily calorie + macro targets, computed from body stats, activity, and goal.	Not declared	Not declared	Not declared	Not declared
`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 accordingly (reduce volume / reduce intensity / recovery day). Returns the readiness score + modifier.	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 accordingly (reduce volume / reduce intensity / recovery day). Returns the readiness score + modifier.	Not declared	Not declared	Not declared	Not declared
`regenerate_program`Rebuild the whole program from the stored profile (~20s AI generation). Use after a profile change or a plateau.	Rebuild the whole program from the stored profile (~20s AI generation). Use after a profile change or a plateau.	Not declared	Not declared	Not declared	Not declared
`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 calibration).	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 calibration).	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Jul 2, 2026
Updated: Jul 2, 2026
Website: https://workout-engine-production-5dd7.up.railway.app/connect⁠ (opens in a new tab)
Repository: Not given
Categories: Uncategorized
GDPR: Not declared

Are you the operator? Claim this listing