Model Context Protocol

Connect EbbChart to Claude

Ask Claude about your audiogram trends, symptom patterns, and medication history — using the data you've already collected in EbbChart.

Server URL
https://mcp.ebbchart.com
Client ID
2rjhhsd17p8ll6rpd2panm4es2

These are the only two values you need.

Setting up in Claude.ai

  1. Enable access in EbbChart first. Open the EbbChart app, go to Profile → Connected AI assistants, and turn it on. The connector returns an error until you do — this step can't be done after.
  2. Open claude.ai and go to Settings → Connectors → Add custom connector.
  3. Enter the Server URL: https://mcp.ebbchart.com
  4. Click Advanced settings to expand that section. The Client ID field appears underneath — enter 2rjhhsd17p8ll6rpd2panm4es2 there. Leave OAuth Client Secret empty.
  5. Click Add, then sign in with your EbbChart account when the login page opens.
Claude's Add custom connector dialog showing EbbChart as the name, https://mcp.ebbchart.com as the server URL, and the client ID filled in under the Advanced settings section
The client ID sits under Advanced settings — you need to expand that section before the field appears.

Setting up in Claude Desktop

  1. Enable access in EbbChart first — same as step 1 above.
  2. Open Claude Desktop and go to Settings → Integrations → Add integration.
  3. Enter the same Server URL and Client ID as above.
  4. Sign in with your EbbChart account when the browser opens.

Supported clients

Claude.ai Claude Desktop Claude Mobile Claude Cowork Claude Code

Claude Code is not supported. Claude Code uses RFC 8252 loopback redirects on ephemeral ports. Cognito matches callback URLs exactly and cannot do port-agnostic matching, so the OAuth flow cannot complete. Use Claude.ai, Desktop, Mobile, or Cowork instead.

How to know it worked

Once connected, try asking Claude:

"What condition am I tracking in EbbChart?"
"Show me my hearing tests from the last month."

If the connector is working, Claude will answer using your actual data rather than asking what EbbChart is.

Troubleshooting

Error -32003
The connector isn't enabled in the app

Go to Profile → Connected AI assistants in EbbChart and turn it on. This has to be done before the connector can return any data.

"does not support dynamic client registration"
The client ID wasn't entered

Open the connector settings, click Advanced settings to expand that section, and enter the client ID: 2rjhhsd17p8ll6rpd2panm4es2. Without it, Claude can't authenticate.

Authentication failed / sign-in loop
Account mismatch

Make sure you're signing in with the same email address you used to create your EbbChart account.

Available tools

All tools are read-only. The connector cannot create, modify, or delete any data in your EbbChart account.

get_audiogram_history
Returns your hearing test records — per-date dB thresholds at standard audiometric frequencies (250 Hz–8 kHz) for left and right ear. Includes tests taken in-app and records imported from Apple Health. Supports pagination, date filters, and sort order. Up to 50 records per page.
get_symptom_logs
Returns your daily symptom logs — tinnitus volume, vertigo, aural fullness, diplacusis, and any free-text notes you recorded. Supports pagination, date filters, and sort order. Up to 50 records per page.
get_medication_courses
Returns all medication courses on record — name, dose, frequency, start date, and end date (or ongoing) — sorted by start date ascending.
get_profile
Returns your health profile — condition type, affected ear, diagnosis year, country, and account creation date.

Rate limits

100 tool calls per user per UTC calendar day. The limit resets at midnight UTC. This applies to all connected AI assistants combined.

Privacy

Data retrieved by a connected assistant is transmitted to that assistant's provider (Anthropic) and governed by their privacy policy. EbbChart does not have access to your conversations with the AI assistant. See ebbchart.com/privacy → Section 7 for the full disclosure.

You can revoke access at any time from Profile → Connected AI assistants in the EbbChart app.

Questions

privacy@ebbchart.com

Technical reference

All values for developers or directory submissions.

Server URL https://mcp.ebbchart.com
Transport Streamable HTTP (MCP 2025-11-25)
Auth OAuth 2.0 — Cognito RS256 access token
Scope ebbchart/data.read
Client ID 2rjhhsd17p8ll6rpd2panm4es2
Auth server https://cognito-idp.eu-west-1.amazonaws.com/eu-west-1_KFBkJeYrN
Discovery https://mcp.ebbchart.com/.well-known/oauth-protected-resource