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Otter Waiver MCP by usefulapi

MCP server · hosted · v1.3.0 · io.usefulapi/otter-waiver
Online · tested 6h agoNEW · 7h agoNew version 1h agoSeen in the registry 6m ago

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

Website ↗Source code ↗How to connect ↓

What it does

Otter Waiver MCP by usefulapi is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.

At a glance

Hosted (remote)YES
Local installNO
Version1.3.0
PriceNot in the registry
First seen31 Oct 2026
Last checked6m ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 6h ago (live check)

Hosted endpoint

  • https://otter-waiver.usefulapi.io/mcp streamable-http

In Claude Code: claude mcp add --transport http otter-waiver-mcp-by-usefulapi https://otter-waiver.usefulapi.io/mcp

MCP settings (Claude Desktop, Cursor and other MCP clients)

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

Live check

Electra Index connected to the hosted endpoint 6h ago

ONLINE Otter Waiver MCP by usefulapi answered an MCP connection on 31 Oct 2026 and introduced itself as otter-waiver-mcp 1.0.0 (MCP protocol 2025-06-18).

5 tools offered to AI assistants

  • 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 t
  • 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_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_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_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}.

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.

Facts & evidence

Each fact shows where it was seen and when.
FactValueEvidenceSourceLast confirmed
Version1.3.0DECLAREDSRC-001 Official MCP Registry6m ago
Hosted endpointhttps://otter-waiver.usefulapi.io/mcpDECLAREDSRC-001 Official MCP Registry6m ago
Local install (package)noDECLAREDSRC-001 Official MCP Registry6m ago
Remote access (hosted)yesDECLAREDSRC-001 Official MCP Registry6m ago
Websitehttps://usefulapi.io/otter-waiver/DECLAREDSRC-001 Official MCP Registry6m ago
Repositoryhttps://github.com/m190/usefulapi-mcpDECLAREDSRC-001 Official MCP Registry6m ago
Registry statusactiveDECLAREDSRC-001 Official MCP Registry6m ago
MCP serveryesDECLAREDSRC-001 Official MCP Registry6m ago

Change history

  • VERSION31 Oct 2026
    1.2.0 → 1.3.0
  • VERSION31 Oct 2026
    1.1.0 → 1.2.0
  • VERSION31 Oct 2026
    1.0.0 → 1.1.0
  • NEW31 Oct 2026
    first seen in the index

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Questions about Otter Waiver MCP by usefulapi

How do I connect Otter Waiver MCP by usefulapi?

Use the hosted endpoint https://otter-waiver.usefulapi.io/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does Otter Waiver MCP by usefulapi offer?

When Electra Index connected on 31 Oct 2026, it listed 5 tools: otterwaiver_list_waivers, otterwaiver_get_waiver, otterwaiver_list_latest_participants, otterwaiver_list_latest_checkins, otterwaiver_get_participant. The full list is in "Live check" above.

Is Otter Waiver MCP by usefulapi online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 6h ago.