Using the MCP server

The MCP server offers the same operations as the REST API, as tools that an AI assistant can call.

Connecting a client

The server endpoint is https://api.awsevents.com/mcp, over streamable HTTP. Point a client at that URL. Where a client lets you set a client ID, use 7vmom55m1qstvq8i71ph127bfq, which is shared by all callers.

The server requires sign-in, and the client handles that flow for you. On the first call it receives a challenge naming where to sign in, opens that page in a browser, and stores the resulting token. The sign-in itself is the flow described in Authentication.

Kiro

Add the server to your MCP configuration file:

{
  "mcpServers": {
    "awsevents": {
      "url": "https://api.awsevents.com/mcp",
      "oauth": {
        "clientId": "7vmom55m1qstvq8i71ph127bfq",
        "redirectUri": "http://127.0.0.1:8976",
        "oauthScopes": ["openid", "email", "events/access"]
      }
    }
  }
}

End redirectUri at the port, as shown. Kiro reads the port from the last colon onward and adds the /oauth/callback path itself. Give it a value with a path and it cannot read the port, so it falls back to a random one and sign-in fails with redirect_mismatch. Reload the window after editing the file.

Claude Code

claude mcp add --transport http --scope user awsevents \
  https://api.awsevents.com/mcp \
  --callback-port 8484 --client-id 7vmom55m1qstvq8i71ph127bfq

Important

Use the preceding callback values, and always set the port. Both clients pick a random port otherwise, and a random port cannot sign in. The API matches a callback in full, port and path included, with no wildcards, and one it does not recognize fails without reporting the callback as the cause.

Note

The client stores your token on the machine it runs on, and not every client protects it well. Deleting a client's configuration does not invalidate the token it already holds. An MCP client has no redirect chain to sign you out with, so to sign out fully, revoke the token as described in Signing an attendee out, then end the Builder ID session at https://profile.aws.amazon.com.

To confirm the connection, ask the assistant to list events.

Available tools

Each tool maps to one REST operation. The server itself requires sign-in, so every tool call is made as a signed-in attendee, including the catalog tools that need no credentials on the REST API. Reading the catalog of an event that requires registration, and anything that touches a schedule, additionally requires that the attendee be registered for that event.

MCP tools

Tool	Description
ListEvents	Lists AWS events that are running or upcoming, such as AWS re:Invent.
GetEvent	Gets one event by ID.
ListSessions	Lists an event's sessions, a page at a time.
GetSession	Gets one session within an event.
GetSchedule	Gets your own schedule for an event.
ReserveSessions	Reserves one or more sessions.
CancelReservation	Cancels one of your reservations.
AssociateFavorites	Marks one or more sessions as favorites.
DisassociateFavorite	Removes one session from favorites.
CreatePersonalTime	Adds a personal time entry.
UpdatePersonalTime	Replaces a personal time entry.
DeletePersonalTime	Removes a personal time entry.

What to expect from an assistant

• Per-operation quotas apply as on the REST API, and an operation can be closed even when its tool is listed. For more information, see Quotas and throttling and When an operation is closed.

• Reserving and favoriting succeed per session, not per request, so an assistant can report "done" when some sessions failed. Ask it to confirm from GetSchedule.