MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Automation & workflows

Slottable MCP by usefulapi

Read contacts, slot types, rosters, bookings and webhooks in Slottable.

Checks passed
14 / 22

0 failed · 8 not measured

Median response
56 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
11

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 56 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name slottable-mcp.

  • Pass
    Lists tools

    tools/list returned 11 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 56 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 56 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    22 of 22 parameters have a description (100%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-11-10T23:35:02.78097Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using Slottable MCP by usefulapi

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http slottable-mcp-by-usefulapi https://slottable.usefulapi.io/mcp

Capabilities

Tools 11

slottable_get_contact

Get one contact by id. Slottable API: GET /api/v1/companies/{company_id}/contacts/{id}.

Discovered
slottable_get_slot_type

Get one slot type by id, including its default duration, price and booking rules. Slottable API: GET /api/v1/companies/{company_id}/slot-types/{id}.

Discovered
slottable_get_slot_type_instance

Get one dated slot (instance) of a slot type. Slottable API: GET /api/v1/companies/{company_id}/slot-types/{slot_type_id}/slot-type-instances/{id}.

Discovered
slottable_get_webhook

Get one webhook subscription by id. Slottable API: GET /api/v1/companies/{company_id}/webhooks/{id}.

Discovered
slottable_list_contacts

List the company's contacts (name, email, phone, address, subscription flag). Slottable API: GET /api/v1/companies/{company_id}/contacts.

Discovered
slottable_list_latest_booking_contacts

List the most recent booking contacts across the company's slots, with their contact details. Slottable API: GET /api/v1/companies/{company_id}/latest-booking-contacts.

Discovered
slottable_list_slot_type_instance_bookings

List the bookings made for one dated slot (booking id, token, cancellation time). For who is on the slot, use slottable_list_slot_type_instance_roster. Slottable API: GET /api/v1/companies/{company_id}/slot-types/{slot_type_id}/slot-type-instances/{slot_type_instance_id}/bookings.

Discovered
slottable_list_slot_type_instance_roster

List the contacts on the roster of one dated slot (who is registered for it). Slottable API: GET /api/v1/companies/{company_id}/slot-types/{slot_type_id}/slot-type-instances/{slot_type_instance_id}/contacts.

Discovered
slottable_list_slot_type_instances

List the dated slots (instances) of one slot type: datetime, duration, total slots, price and publish state. Slottable API: GET /api/v1/companies/{company_id}/slot-types/{slot_type_id}/slot-type-instances.

Discovered
slottable_list_slot_types

List the company's slot types (bookable services or events: name, duration, price, payment and cancellation rules). Good first call. Slottable API: GET /api/v1/companies/{company_id}/slot-types.

Discovered
slottable_list_webhooks

List the company's webhook subscriptions (target URL, model, events, filter). Slottable API: GET /api/v1/companies/{company_id}/webhooks.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected56 ms11