
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-hammerheadMCP address: https://api.memory.fit/mcp
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
- 01In the Memory.fit app, open Settings → Health data.
- 02Tap Hammerhead, then Connect.
- 03Sign in with your Hammerhead account and allow Memory.fit.
- 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
- 01On chatgpt.com, open Plugins and tap +, then Add custom MCP server
- 02Name it Memory.fit and paste the address
- 03Choose OAuth, confirm the warning, then Create as a plugin and sign in
- 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
- 01Install in Claude
- 02Tap Add, then sign in to Memory.fit
- 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
- 01In the Memory.fit app, open Settings → AI agents → Grok Bot and copy your Memory.fit link.
- 02Open Grok Bot on your computer or phone and message any of your Bots.
- 03Send “Add a custom MCP server called Memory.fit at” and paste your Memory.fit link.
- 04Check the name and link it shows you, then approve it.
- 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+
- 01In the Memory.fit app, open Settings → AI agents → Muse and create your key.
- 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.”
- 03Paste your Memory.fit address when Muse asks.
- 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
- 01In the Memory.fit app, open Settings → AI agents → Dots and copy your Memory.fit link.
- 02On chatgpt.com in your browser, open Plugins and tap +.
- 03Choose Add custom server, name it Memory.fit and paste your Memory.fit link.
- 04Pick sign-in, then sign in with your Memory.fit account and choose what it may do.
- 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+
- 01On gemini.google.com: Customize › Connectors
- 02Tap + Custom
- 03Paste the address, tap Next, then Connect, and sign in to Memory.fit
- 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
- 01Copy the address
- 02In Grok: Settings › Connectors › Custom Connector › Connect
- 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
- 01Copy the address
- 02On perplexity.ai: Settings › Connectors › + Custom connector › Remote
- 03Name it Memory.fit, paste the address and choose API key
- 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
- 01In the Memory.fit app, open Settings → AI agents → Cursor and create your key.
- 02Add the block to ~/.cursor/mcp.json (or .cursor/mcp.json in a project).
- 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
- 01In your terminal, run the command
- 02Start Claude Code and run /mcp
- 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
- 01In your terminal, run the command
- 02Then run: codex mcp login memory-fit
- 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.
| Option | Where it runs | What you need |
|---|---|---|
| Hosted MCP serverMemory.fit MCPHosted, in ChatGPT, Claude, Grok Bot, Gemini and any MCP app | Hosted, in ChatGPT, Claude, Grok Bot, Gemini and any MCP app | The 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
- forum.intervals.icu/t/hammerhead-karoo-now-syncs-with-intervals-icu/88156: intervals.icu forum, January 2025: the Karoo syncs rides and planned workouts with intervals.icu, connected from the Karoo
- shop.sram.com/blogs/change-logs/karoo-software-build-version-1-638-2460: Karoo build 1.638.2460, June 25, 2026: training metrics sync from TrainingPeaks, Strava, intervals.icu or a third party on Hammerhead's public API
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
- What Memory.fit reads from Hammerhead
- Memory.fit and AthleteData, side by side
- Every device's MCP page
Hammerhead is a trademark of its owner. Memory.fit is not made by or affiliated with Hammerhead's owner.
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