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Hammerhead MCP

Your Hammerhead Karoo rides in ChatGPT and Claude.

Hammerhead has no official MCP server.

Memory.fit is a hosted MCP server for athletes: connect Hammerhead in the Memory.fit app, add one address to your AI, and it reads rides, power and heart rate.

You need the Memory.fit app on Android (the iPhone app is coming), and an AI that can add a custom connector.

The address to add to your AI

https://api.memory.fit/mcp?src=mcp-hammerhead

MCP address: https://api.memory.fit/mcp

Get it onGoogle Play
Set it up

Hammerhead and your AI, in short

Official Hammerhead MCP
None
Memory.fit
Hosted MCP server, nothing to install
Your AI reads
Rides, Power, Heart rate
Workouts to Hammerhead
No
Works in
ChatGPT, Claude, Grok Bot, Gemini and any MCP app
Price
$9 a month or $69 a year, with 7 days free

Checked November 10, 2026.

What your AI reads

What your AI can read from Hammerhead

Once Hammerhead is connected in the Memory.fit app, every AI you add reads the same history, under its own permissions.

  • Rides
  • Power
  • Heart rate
  • Duration and distance

The tools that read it:get_workoutsget_trendsget_training_loadget_session_compliance

Setup

Set up Hammerhead in your AI

1. In the Memory.fit app

  1. 01In the Memory.fit app, open Settings → Health data.
  2. 02Tap Hammerhead, then Connect.
  3. 03Sign in with your Hammerhead account and allow Memory.fit.
  4. 04Each new ride arrives as your Karoo syncs.

2. In your AI

Pick your AI. Each one connects to your Memory.fit account, with a sign in or a key.

ChatGPTOn a computer · about two minutes
  1. 01On chatgpt.com, open Plugins and tap +, then Add custom MCP server
  2. 02Name it Memory.fit and paste the address
  3. 03Choose OAuth, confirm the warning, then Create as a plugin and sign in
  4. 04In a new chat, type @ and pick Memory.fit

The address: https://api.memory.fit/mcp?src=mcp-hammerhead

Coming soon: one tap from ChatGPT's plugin directory.

ClaudeAny plan · about a minute
Install in Claude
  1. 01Install in Claude
  2. 02Tap Add, then sign in to Memory.fit
  3. 03In a chat, turn on Memory.fit under + › Connectors

Claude adds new connectors on the web or desktop. On a phone, use a computer once, and after that it works in the Claude app too.

Grok BotComes with X Premium, Super or Ultra, or a legacy Cursor plan
  1. 01In the Memory.fit app, open Settings → AI agents → Grok Bot and copy your Memory.fit link.
  2. 02Open Grok Bot on your computer or phone and message any of your Bots.
  3. 03Send “Add a custom MCP server called Memory.fit at” and paste your Memory.fit link.
  4. 04Check the name and link it shows you, then approve it.
  5. 05Tap Authorize and sign in with your Memory.fit account. Memory.fit works from your next message.

The address: https://api.memory.fit/mcp?src=mcp-hammerhead

MuseUS only · 18+
  1. 01In the Memory.fit app, open Settings → AI agents → Muse and create your key.
  2. 02In a Muse chat, say: “Add a custom connector called Memory.fit. Its address is the link I’ll paste, and it needs a key.”
  3. 03Paste your Memory.fit address when Muse asks.
  4. 04Paste your key into Muse’s secure credentials prompt, never into the chat.

The address: https://api.memory.fit/mcp?src=mcp-hammerhead

Muse connects with a key from the Memory.fit app. Paste it into Muse's settings, never into a chat.

DotsChatGPT Pro, Business Premium or Enterprise
  1. 01In the Memory.fit app, open Settings → AI agents → Dots and copy your Memory.fit link.
  2. 02On chatgpt.com in your browser, open Plugins and tap +.
  3. 03Choose Add custom server, name it Memory.fit and paste your Memory.fit link.
  4. 04Pick sign-in, then sign in with your Memory.fit account and choose what it may do.
  5. 05In your dot's app settings, allow Memory.fit. Then message your dot.

The address: https://api.memory.fit/mcp?src=mcp-hammerhead

GeminiPersonal Google account · 18+
  1. 01On gemini.google.com: Customize › Connectors
  2. 02Tap + Custom
  3. 03Paste the address, tap Next, then Connect, and sign in to Memory.fit
  4. 04In a chat, type @ and pick it under Connectors

The address: https://api.memory.fit/mcp?src=mcp-hammerhead

No + Custom button? Work accounts don't have it: use a personal Google account. Gemini asks you to allow each change it makes.

GrokSign in · about a minute
  1. 01Copy the address
  2. 02In Grok: Settings › Connectors › Custom Connector › Connect
  3. 03Name it Memory.fit, paste it, tap Add Connector, then sign in to Memory.fit

The address: https://api.memory.fit/mcp?src=mcp-hammerhead

Perplexity ComputerPro · about two minutes
  1. 01Copy the address
  2. 02On perplexity.ai: Settings › Connectors › + Custom connector › Remote
  3. 03Name it Memory.fit, paste the address and choose API key
  4. 04Paste your key from the Memory.fit app, then save

The address: https://api.memory.fit/mcp?src=mcp-hammerhead

Perplexity Computer connects with a key from the Memory.fit app. Paste it into Perplexity Computer's settings, never into a chat.

Cursor
  1. 01In the Memory.fit app, open Settings → AI agents → Cursor and create your key.
  2. 02Add the block to ~/.cursor/mcp.json (or .cursor/mcp.json in a project).
  3. 03Check Cursor Settings → Tools & MCP shows Memory.fit as connected.
{
  "mcpServers": {
    "memory-fit": {
      "url": "https://api.memory.fit/mcp?src=mcp-hammerhead",
      "headers": { "Authorization": "Bearer mem_pat_your_key" }
    }
  }
}

Cursor connects with a key from the Memory.fit app. Paste it into Cursor's settings, never into a chat.

Claude CodeOn a computer · Claude Code · about a minute
  1. 01In your terminal, run the command
  2. 02Start Claude Code and run /mcp
  3. 03Pick memory-fit and sign in to Memory.fit
claude mcp add --transport http memory-fit "https://api.memory.fit/mcp?src=mcp-hammerhead"
CodexOn a computer · Codex CLI · about a minute
  1. 01In your terminal, run the command
  2. 02Then run: codex mcp login memory-fit
  3. 03Sign in to Memory.fit in the browser that opens
codex mcp add memory-fit --url "https://api.memory.fit/mcp?src=mcp-hammerhead"

Try it

Try these prompts

“Read my Karoo rides from the last six weeks and tell me how my power is trending.”

Uses:get_workoutsget_trends

“How did Sunday's long ride on my Karoo go, and was my heart rate drifting late in it?”

Uses:get_workoutsget_source_data

“Is my weekly riding load climbing too fast for the event I'm building toward?”

Uses:get_training_loadget_trends

“Plan carbs and fluid per hour for Saturday's four hour ride.”

Uses:get_workoutsset_session_fuel_plan

Your options

Every way to get Hammerhead into an AI

Hammerhead runs no MCP server. Community servers run on your own computer, hosted services run it for you, and so does Memory.fit.

OptionWhat you need
Hosted MCP serverMemory.fit MCPHosted, in ChatGPT, Claude, Grok Bot, Gemini and any MCP appThe Memory.fit app with Hammerhead connected. $9 a month or $69 a year, with 7 days free.

When another option is better

  • You also ride with other computers or trainer apps and already use intervals.icu: your Karoo syncs rides and planned workouts there, and intervals.icu connects to Memory.fit too.

Limits, said plainly

  • Hammerhead shares no history: your first ride in Memory.fit is your next one.
  • Memory.fit reads your Karoo rides and sends nothing to your Karoo.
  • Rides come in with power, heart rate, duration and distance; Memory.fit does not read the second by second file.

Sources, checked November 10, 2026

Questions

Hammerhead MCP, in short.

  • No. Hammerhead does not run an MCP server.

  • Yes. Connect Hammerhead in the Memory.fit app, add Memory.fit to ChatGPT as a connector, and ChatGPT reads it. Claude and every MCP app work the same way.

  • No. Memory.fit is hosted: you add one address to your AI and sign in with your Memory.fit account. Nothing to install, no password of another service to paste.

  • Each AI gets only the permissions you allow, every change shows in the app with who made it, and you can disconnect an AI or a source at any time.

Related

More MCP pages

Hammerhead is a trademark of its owner. Memory.fit is not made by or affiliated with Hammerhead's owner.

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