Messente MCP by usefulapi

by usefulapi.io · remote · no sign-in to list tools · v1.3.3 · published by io.usefulapi

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

Deletes · 1Changes · 3

Compare Registry entry

9 tools: 1 can delete or cancel things, 3 change things and 5 only read.

Scanned Oct 21, 2026

Deletes or cancels1Claude Code: deny: see these tools
Can't be undone0Claude Code: ask
Changes things3Claude Code: ask: see these tools
Only reads5Claude Code: allow: see these tools

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

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

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warnmessente_lookup_numbers
The server marks "messente_lookup_numbers" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "messente_lookup_numbers" says "lookup": a word for reading.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

9 tools

Deletes or cancels 1Removes, cancels or revokes something.Claude Code: deny

messente_send_smsWRITE: 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_ge…No findings
Why it is in this group
- The name "messente_send_sms" says "send": a word for sending, and what is sent cannot be taken back.
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
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.
Annotations the server declares
- title: Send an SMS
- readOnlyHint: false
- destructiveHint: true
- idempotentHint: false
- openWorldHint: true

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

messente_add_to_blacklistWRITE: add one phone number to the account's blacklist, so Messente will no longer send messages to it.No findings
Why it is in this group
- The name "messente_add_to_blacklist" says "add": a word for a change.
Description, as the server wrote it
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.
Annotations the server declares
- title: Add a number to the blacklist
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
messente_check_blacklistCheck whether one phone number is on the account's blacklist.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check whether one phone number is on the account's blacklist. Messente: GET /phonebook/blacklist/{phone} (found = blacklisted, 404 = not).
Annotations the server declares
- title: Check if a number is blacklisted
- readOnlyHint: true
- openWorldHint: true
messente_lookup_numbersNumber lookup (HLR): is each number valid, ported, roaming, and which network it is on.1 finding
Why it is in this group
- The name "messente_lookup_numbers" says "lookup": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
Findings
- Warn
  The server marks "messente_lookup_numbers" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "messente_lookup_numbers" says "lookup": a word for reading.
  What this check looks for
Description, as the server wrote it
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.
Annotations the server declares
- title: Look up phone numbers (HLR)
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true

Only reads 5Looks things up and changes nothing.Claude Code: allow

messente_get_balanceGet the Messente account's remaining SMS credit balance (in EUR).No findings
Why it is in this group
- The name "messente_get_balance" says "get": a word for reading.
Description, as the server wrote it
Get the Messente account's remaining SMS credit balance (in EUR). Messente legacy API: GET /get_balance (api2.messente.com).
Annotations the server declares
- title: Get account balance
- readOnlyHint: true
- openWorldHint: true
messente_get_delivery_statusGet 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.No findings
Why it is in this group
- The name "messente_get_delivery_status" says "get": a word for reading.
Description, as the server wrote it
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.
Annotations the server declares
- title: Get delivery status of a message
- readOnlyHint: true
- openWorldHint: true
messente_get_pricesGet this account's price per SMS part for one country, per mobile network (use it to estimate what messente_send_sms will cost).No findings
Why it is in this group
- The name "messente_get_prices" says "get": a word for reading.
Description, as the server wrote it
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.
Annotations the server declares
- title: Get SMS prices for a country
- readOnlyHint: true
- openWorldHint: true
messente_get_statisticsGet total messages and total price per country for a date range, optionally for some message types.No findings
Why it is in this group
- The name "messente_get_statistics" says "get": a word for reading.
Description, as the server wrote it
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).
Annotations the server declares
- title: Get message statistics
- readOnlyHint: true
- openWorldHint: true
messente_list_blacklistList the phone numbers on the account's blacklist (numbers Messente will not send to).No findings
Why it is in this group
- The name "messente_list_blacklist" says "list": a word for reading.
Description, as the server wrote it
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.
Annotations the server declares
- title: List blacklisted numbers
- readOnlyHint: true
- openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.3.3. Values in angle brackets are yours to fill in.

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

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__messente__messente_get_balance",
      "mcp__messente__messente_get_prices",
      "mcp__messente__messente_get_delivery_status",
      "mcp__messente__messente_list_blacklist",
      "mcp__messente__messente_get_statistics"
    ],
    "ask": [
      "mcp__messente__messente_check_blacklist",
      "mcp__messente__messente_lookup_numbers",
      "mcp__messente__messente_add_to_blacklist"
    ],
    "deny": [
      "mcp__messente__messente_send_sms"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as messente. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.usefulapi/messente/changes.xml

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Source: MCP Registry · repository. Synced Oct 21, 2026, 19:23 UTC.

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