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 · Communication & messaging

Messente MCP by usefulapi

Read Messente balance, prices, delivery status and statistics; send SMS to up to 10 numbers.

Checks passed
14 / 22

0 failed · 8 not measured

Median response
54 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
9

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

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 54 ms.

  • Pass
    Valid handshake

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

  • Pass
    Lists tools

    tools/list returned 9 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 54 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 54 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

    13 of 13 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 2026-11-10T23:33:59.490899Z, within 180 days.

  • Not measured
    Open-source licence

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

Start using Messente 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 messente-mcp-by-usefulapi https://messente.usefulapi.io/mcp

Capabilities

Tools 9

messente_add_to_blacklist

WRITE: add one phone number to the account's blacklist, so Messente will no longer send messages to it. Adding a number already listed is harmless. Messente: POST /phonebook/blacklist.

Discovered
messente_check_blacklist

Check whether one phone number is on the account's blacklist. Messente: GET /phonebook/blacklist/{phone} (found = blacklisted, 404 = not).

Discovered
messente_get_balance

Get the Messente account's remaining SMS credit balance (in EUR). Messente legacy API: GET /get_balance (api2.messente.com).

Discovered
messente_get_delivery_status

Get the delivery report of a sent message by its omnimessage id (returned by messente_send_sms): per-message status (DELIVRD, UNDELIV, FAILED, ...), error and the price charged. Messente asks not to poll this for every message at scale. Messente: GET /omnimessage/{omnimessage_id}/status.

Discovered
messente_get_prices

Get this account's price per SMS part for one country, per mobile network (use it to estimate what messente_send_sms will cost). Messente legacy API: GET /prices.

Discovered
messente_get_statistics

Get total messages and total price per country for a date range, optionally for some message types. Messente: POST /statistics/reports (a read-only report).

Discovered
messente_list_blacklist

List the phone numbers on the account's blacklist (numbers Messente will not send to). Returns the total count and at most `limit` numbers. Messente: GET /phonebook/blacklist.

Discovered
messente_lookup_numbers

Number lookup (HLR): is each number valid, ported, roaming, and which network it is on. COSTS CREDITS: Messente charges per number looked up (EUR 0.002 per number in its docs) and the Number Lookup service must be enabled on the account (a fixed monthly fee applies per Messente's docs). Up to 10 numbers per call. Messente: POST /hlr/sync.

Discovered
messente_send_sms

WRITE: SENDS REAL SMS TEXT MESSAGES to real people and SPENDS the account's Messente credit (each recipient is charged per SMS part, longer texts use several parts; use messente_get_prices to estimate). SMS only, at most 10 recipients per call, one message per recipient, never to a list. Send only to people who asked to receive it (Messente forbids unsolicited messages). Not undoable. Messente: POST /omnimessage with channel sms, once per recipient.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected54 ms9