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

Read-only probes

MCP server · Communication & messaging

Loops MCP by usefulapi

By usefulapi.io Verified namespace

Manage Loops contacts, mailing lists, and transactional/event emails.

WebsiteSource code
Connect to Loops MCP by usefulapi
Checks passed
14 / 22

0 failed · 8 not measured

Median response
58 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
10

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 58 ms.

  • Pass
    Valid handshake

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

  • Pass
    Lists tools

    tools/list returned 10 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 58 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 58 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

    36 of 36 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 2026-11-10T23:33:29.031189Z, within 180 days.

  • Not measured
    Open-source licence

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

Start using Loops 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 loops-mcp-by-usefulapi https://loops.usefulapi.io/mcp

Capabilities

Tools 10

loops_create_contact

Creates a contact in Loops (additive). Loops API: POST /v1/contacts/create.

Discovered
loops_create_contact_property

Creates a custom contact property/field (additive schema change). Loops API: POST /v1/contacts/properties.

Discovered
loops_delete_contact

Deletes a contact from Loops. Destructive. Supply email OR userId. Loops API: POST /v1/contacts/delete.

Discovered
loops_find_contact

Find a contact by email or userId (supply at least one). Loops API: GET /v1/contacts/find.

Discovered
loops_list_contact_properties

List contact fields / custom properties defined in Loops. Loops API: GET /v1/contacts/properties.

Discovered
loops_list_mailing_lists

List all mailing lists in the Loops account (id + name). Loops API: GET /v1/lists.

Discovered
loops_send_event

Sends an event to Loops for a contact — TRIGGERS any automations/loops subscribed to this event. Loops API: POST /v1/events/send.

Discovered
loops_send_transactional

SENDS a real transactional email via a Loops template. This dispatches an actual email to the recipient. Loops API: POST /v1/transactional.

Discovered
loops_test_api_key

Verify the configured Loops API key and return the team name — a good first call. Loops API: GET /v1/api-key.

Discovered
loops_update_contact

Updates (or creates) a contact by email/userId. Upserts — creates the contact if not found. Loops API: PUT /v1/contacts/update.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected58 ms10

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