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Endufueler

Use Endufueler with your AI assistant

Find endurance products and preview fueling plans in conversation. Choose your assistant to get started.

Choose your assistant

Server URL

https://endufueler.com/api/mcp?auth_challenge=tool_result

Set up in ChatGPT

  1. Open Plugins on the web. Choose + → Add custom MCP server, name it Endufueler, and paste the URL above.
  2. Choose OAuth or no authentication. Review the warning, then Create as a plugin and install it.
  3. Start a conversation, type @, and select Endufueler.
Set up in ChatGPT (opens a new tab)

Your account is optional

Connect your Endufueler account when you want to use your saved plans. Every new or updated save needs your review and approval in Endufueler.

Sign in only on Endufueler. Never paste passwords or tokens into chat. Your AI provider still processes the conversation under its own settings.

Manage account access

Try asking

Once setup is complete, select Endufueler in your conversation.

Use Endufueler to search for endurance gels. Show carbohydrate and caffeine per serving, including unknown values.

More example prompts

Without an account

Use Endufueler to calculate fueling for a four-hour ride. Ask for missing athlete, event, course support, and caffeine preferences before calculating. Keep preliminary estimates separate from Endufueler results.

With account access

Read my saved plans in Endufueler. Ask me to connect my account if needed.

With account access

Prepare an updated Endufueler plan and give me the browser link to review it. Save only after I approve that exact draft.

Need help?

Read the assistant guide
Connection and client support

Setup opens your assistant’s settings; it does not install or connect Endufueler automatically. Custom connections may be restricted by your account or workspace. Compatibility must be checked in the client; there is no public directory listing yet.

Use the complete URL shown for your selected assistant. ChatGPT uses a client-specific URL; other clients use the default. Cloud clients cannot reach localhost or a protected preview. Opening the URL in a browser does not test an MCP connection.

If personal plans do not work, check that your client supports MCP OAuth and use its sign-in-when-needed option. Codex uses a separate login command. A Secure MCP Tunnel runtime key connects infrastructure; it does not grant access to personal plans.

If tools look outdated, refresh their metadata or reconnect. Respect retry guidance when a usage limit is reached. For current client controls, see the official documentation linked in the guide.

Privacy, permissions and saving

Endufueler does not save, cache, or log anonymous calculation payloads. Bounded operational metadata and quota counters may be retained. Your AI provider processes conversation and tool traffic under its own settings.

plans:read permits reading your saved plans. plans:write permits preparing and committing reviewed saves or updates. OAuth consent is not approval of an individual plan.

A prepared draft is private, expires after 15 minutes, and is not a saved plan. Open its review link and approve that exact draft before asking your assistant to finish saving. Only saved: true from the commit tool confirms success. An expired draft or conflicting edit needs a fresh calculation and review; do not recreate it automatically. Deletion is not available through MCP.

Disconnect in your assistant and revoke its grant in Endufueler account settings. Revoking access does not erase conversation history held by your AI provider. Read the privacy policy for data practices.