SimpleTexting MCP by usefulapi

by usefulapi.io · remote · no sign-in to list tools · v1.16.3 · published by io.usefulapi

Send SMS/MMS, manage contacts, and read campaigns, messages and media on SimpleTexting.

Deletes · 2Changes · 1

Compare Registry entry

11 tools: 2 can delete or cancel things, 1 change things and 8 only read.

Scanned Oct 21, 2026

Deletes or cancels2Claude Code: deny: see these tools
Can't be undone0Claude Code: ask
Changes things1Claude Code: ask: see these tools
Only reads8Claude 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 simpletexting https://simpletexting.usefulapi.io/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warnsimpletexting_evaluate_message
The server marks "simpletexting_evaluate_message" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true}; The name "simpletexting_evaluate_message" says "evaluate": a word for a change.
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.

11 tools

Deletes or cancels 2Removes, cancels or revokes something.Claude Code: deny

simpletexting_send_messageSENDS A REAL SMS or MMS to a recipient — this MODIFIES live data and consumes message credits.No findings
Why it is in this group
- The name "simpletexting_send_message" says "send": a word for sending, and what is sent cannot be taken back.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
SENDS A REAL SMS or MMS to a recipient — this MODIFIES live data and consumes message credits. Provide only the optional fields you need. SimpleTexting REST: POST /messages with JSON body {contactPhone, text, accountPhone?, mode?, subject?, fallbackText?, mediaItems?}.
Annotations the server declares
- title: Send message
- destructiveHint: true
simpletexting_update_contactUPDATES a live contact — its profile fields, list memberships, and custom fields.No findings
Why it is in this group
- The name "simpletexting_update_contact" says "update": a word for a change.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
UPDATES a live contact — its profile fields, list memberships, and custom fields. This MODIFIES live data. Provide only the fields you want to change. SimpleTexting REST: PUT /contacts/{contactIdOrNumber}.
Annotations the server declares
- title: Update contact
- destructiveHint: true

Changes things 1Creates or changes something that can be changed back.Claude Code: ask

simpletexting_evaluate_messageDRY-RUN a message body to compute its segment count, whether it sends as SMS or MMS, and its estimated cost — WITHOUT sending anything.1 finding
Why it is in this group
- The name "simpletexting_evaluate_message" says "evaluate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "simpletexting_evaluate_message" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true}; The name "simpletexting_evaluate_message" says "evaluate": a word for a change.
  What this check looks for
Description, as the server wrote it
DRY-RUN a message body to compute its segment count, whether it sends as SMS or MMS, and its estimated cost — WITHOUT sending anything. Safe and read-only. SimpleTexting REST: POST /messages/evaluate with JSON body {text, mode?}.
Annotations the server declares
- title: Evaluate message
- readOnlyHint: true

Only reads 8Looks things up and changes nothing.Claude Code: allow

simpletexting_get_campaignGet a single campaign by its id, including its message, recipients, and status.No findings
Why it is in this group
- The name "simpletexting_get_campaign" says "get": a word for reading.
Description, as the server wrote it
Get a single campaign by its id, including its message, recipients, and status. SimpleTexting REST: GET /campaigns/{id}.
Annotations the server declares
- title: Get campaign
- readOnlyHint: true
simpletexting_get_contactGet a single contact by its id or phone number, including profile fields, list memberships, and custom fields.No findings
Why it is in this group
- The name "simpletexting_get_contact" says "get": a word for reading.
Description, as the server wrote it
Get a single contact by its id or phone number, including profile fields, list memberships, and custom fields. SimpleTexting REST: GET /contacts/{contactIdOrNumber}.
Annotations the server declares
- title: Get contact
- readOnlyHint: true
simpletexting_get_mediaGet a single media item (MMS asset) by its id, including its URL and metadata.No findings
Why it is in this group
- The name "simpletexting_get_media" says "get": a word for reading.
Description, as the server wrote it
Get a single media item (MMS asset) by its id, including its URL and metadata. SimpleTexting REST: GET /media/{id}.
Annotations the server declares
- title: Get media
- readOnlyHint: true
simpletexting_get_messageGet a single message by its id, including its text, direction, status, and timestamps.No findings
Why it is in this group
- The name "simpletexting_get_message" says "get": a word for reading.
Description, as the server wrote it
Get a single message by its id, including its text, direction, status, and timestamps. SimpleTexting REST: GET /messages/{id}.
Annotations the server declares
- title: Get message
- readOnlyHint: true
simpletexting_list_campaignsList the account's campaigns as a paged collection, optionally filtered by sending number, state, list, and start-date range.No findings
Why it is in this group
- The name "simpletexting_list_campaigns" says "list": a word for reading.
Description, as the server wrote it
List the account's campaigns as a paged collection, optionally filtered by sending number, state, list, and start-date range. Note: only immediate campaigns are returned — scheduled/recurring campaigns are NOT included. SimpleTexting REST: GET /campaigns.
Annotations the server declares
- title: List campaigns
- readOnlyHint: true
simpletexting_list_contactsList the account's contacts as a paged collection, optionally filtered by a `since` cursor and sort `direction`.No findings
Why it is in this group
- The name "simpletexting_list_contacts" says "list": a word for reading.
Description, as the server wrote it
List the account's contacts as a paged collection, optionally filtered by a `since` cursor and sort `direction`. SimpleTexting REST: GET /contacts.
Annotations the server declares
- title: List contacts
- readOnlyHint: true
simpletexting_list_mediaList the account's media items (MMS assets) as a paged collection.No findings
Why it is in this group
- The name "simpletexting_list_media" says "list": a word for reading.
Description, as the server wrote it
List the account's media items (MMS assets) as a paged collection. SimpleTexting REST: GET /media.
Annotations the server declares
- title: List media
- readOnlyHint: true
simpletexting_list_messagesList the account's messages as a paged collection (inbound + outbound message history).No findings
Why it is in this group
- The name "simpletexting_list_messages" says "list": a word for reading.
Description, as the server wrote it
List the account's messages as a paged collection (inbound + outbound message history). SimpleTexting REST: GET /messages.
Annotations the server declares
- title: List messages
- readOnlyHint: 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 1.16.3. Values in angle brackets are yours to fill in.

claude mcp add --transport http simpletexting https://simpletexting.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__simpletexting__simpletexting_list_contacts",
      "mcp__simpletexting__simpletexting_get_contact",
      "mcp__simpletexting__simpletexting_list_campaigns",
      "mcp__simpletexting__simpletexting_get_campaign",
      "mcp__simpletexting__simpletexting_list_messages",
      "mcp__simpletexting__simpletexting_get_message",
      "mcp__simpletexting__simpletexting_list_media",
      "mcp__simpletexting__simpletexting_get_media"
    ],
    "ask": [
      "mcp__simpletexting__simpletexting_evaluate_message"
    ],
    "deny": [
      "mcp__simpletexting__simpletexting_send_message",
      "mcp__simpletexting__simpletexting_update_contact"
    ]
  }
}

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 simpletexting. 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/simpletexting/changes.xml

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3 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

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

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