Otter Waiver MCP by usefulapi MCP Server

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answering

Otter Waiver MCP by usefulapi is answering right now. Last checked moments ago. It exposes 5 tools. Last commit 1 Nov 2026.

Read waivers, signed participants and check-ins in Otter Waiver.

Uptime history 17 hours of history

17 hours agonow

100.0%

Uptime 24h

61 of 61 checks

Tools

read from the server

202 ms

Response time

average over 24h

Stars

last commit 1 Nov 2026

Nothing serious here today

Today is the operative word: we check Otter Waiver MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add otter-waiver --transport http https://otter-waiver.usefulapi.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://otter-waiver.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.otter-waiver]
url = "https://otter-waiver.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "otter-waiver": {
      "url": "https://otter-waiver.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "otter-waiver": {
      "type": "http",
      "url": "https://otter-waiver.usefulapi.io/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

otterwaiver

otterwaiver_get_participant

Get one participant (adult or minor) by id: signer data, waiver id, timestamps, document and certificate links. Get the id from the participant lists or from a waiver. API: GET /participants/{id}.

otterwaiver_get_waiver

Get one waiver with its full text, settings, additional fields and signed participants. Get the id from otterwaiver_list_waivers. API: GET /waivers/{id}.

otterwaiver_list_latest_checkins

List the 50 most recent participant check-ins, with the same fields as otterwaiver_list_latest_participants (the checkedIn timestamp is set). API: GET /participants/latest/checkins.

otterwaiver_list_latest_participants

List the 50 most recent participants who signed a waiver: signer contact data, emergency contact, answers to extra questions, timestamps and document links. The data is personal data of the signers. API: GET /participants/latest.

otterwaiver_list_waivers

List the waivers of the account (title, event, status draft/active/inactive, activities, response counts). Page numbers are required by the API; the defaults are page 1 with 20 records. Filter by event name (waiver folder title) or waiver title. API: GET /waivers.

Endpoints

URL	Transport	State	Latency	Checked
https://otter-waiver.usefulapi.io/mcp	streamable-http	answering	319 ms	0 min ago

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Otter Waiver MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Otter Waiver MCP by usefulapi do?

It exposes 5 tools, read directly from the server on our last check. Among them: otterwaiver_get_participant, otterwaiver_get_waiver, otterwaiver_list_latest_checkins, otterwaiver_list_latest_participants, otterwaiver_list_waivers. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Otter Waiver MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 61 of 61 checks got a reply (100.0%), average response time 202 ms. The bar chart above shows every period we have measured.

How do I connect Otter Waiver MCP by usefulapi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Otter Waiver MCP by usefulapi need an API key?

No. Otter Waiver MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Otter Waiver MCP by usefulapi?

It answers our handshake in 202 ms on average, which is faster than 69% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Otter Waiver MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at otter-waiver.usefulapi.io, which runs on its operator's own terms.