Sakari MCP by usefulapi
REMOTE · SAKARI.USEFULAPI.IO
Manage Sakari SMS contacts, conversations, templates and campaigns, and send texts.
Available components
Last scanned (3 hours ago)
Scores higher than 46% of remote servers
Reachable. Last reached 25 Oct 2026.
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security78
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability82
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 2152 tokens (~93/item across 23 items; 23 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage95
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 86% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 24 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Unverified: 1 category
A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Oct 26 62
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Oct 2026 · Probed https://sakari.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of sakari.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 38690, 57355 | 8, 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 302 |
WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://sakari.usefulapi.io/.well-known/oauth-protected-resource/mcp"
Bearer realm="OAuth", resource_metadata="https://sakari.usefulapi.io/.well-known/oauth-protected-resource/mcp"Protected resource metadata
| Document | https://sakari.usefulapi.io/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://sakari.usefulapi.io/mcp |
| Authorisation server | https://sakari.usefulapi.io |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sakari.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/sakari/ |
| http (plaintext) | http://sakari.usefulapi.io/mcp | Inconclusive | 302 | http://sakari.usefulapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
sakari_close_conversation Close conversation ~60
WRITE: mark a conversation closed in the Sakari inbox (a new inbound message reopens it). PUT /v1/accounts/{accountId}/conversations/{conversationId}/close.
| Name | Type | Req | Description |
|---|---|---|---|
| conversation_id | string | yes | Sakari conversation id. |
No output schema declared.
No examples provided.
sakari_create_contact Create contact ~149
WRITE: create a contact. If a contact with the same mobile number exists, merge_strategy decides what happens (append, core or remove, per Sakari). A contact is not opted in to messages by this call. POST /v1/accounts/{accountId}/contacts.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | 2-letter country of the number (default: the account's default country). |
| string | – | – | |
| first_name | string | – | – |
| last_name | string | – | – |
| merge_strategy | string | – | How an existing contact with the same mobile is treated. |
| mobile | string | yes | Mobile number in international format, e.g. +13471234567. |
No output schema declared.
No examples provided.
sakari_create_template Create template ~62
WRITE: create a reusable SMS template (does not send anything). POST /v1/accounts/{accountId}/templates.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | Template name. |
| text | string | yes | Template text; may contain placeholders such as {{firstName}}. |
No output schema declared.
No examples provided.
sakari_get_account Get account ~48
The Sakari account these credentials belong to: name, plan, balance, default country, business info and options. API credentials are never returned. GET /v1/accounts/{accountId}.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sakari_get_balance Get account balance ~36
Prepaid balance, default country, remaining segments and the price per segment. GET /v1/accounts/{accountId}/balance.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sakari_get_call Get call ~43
One call history record by id. GET /v1/accounts/{accountId}/calls/{callId}.
| Name | Type | Req | Description |
|---|---|---|---|
| call_id | string | yes | Sakari call id. |
No output schema declared.
No examples provided.
sakari_get_campaign Get campaign ~42
One campaign by id. GET /v1/accounts/{accountId}/campaigns/{campaignId}.
| Name | Type | Req | Description |
|---|---|---|---|
| campaign_id | string | yes | Sakari campaign id. |
No output schema declared.
No examples provided.
sakari_get_contact Get contact ~63
One contact by id: name, mobile (with validity and line type), email, lists, attributes, opt-in and blocked state. GET /v1/accounts/{accountId}/contacts/{contactId}.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | string | yes | Sakari contact id. |
No output schema declared.
No examples provided.
sakari_get_conversation Get conversation ~55
One conversation by id. Use sakari_list_messages with conversation_id for its messages. GET /v1/accounts/{accountId}/conversations/{conversationId}.
| Name | Type | Req | Description |
|---|---|---|---|
| conversation_id | string | yes | Sakari conversation id. |
No output schema declared.
No examples provided.
sakari_get_message Get message ~53
One message by id: text, direction, status, segments, price, error. GET /v1/accounts/{accountId}/messages/{messageId}.
| Name | Type | Req | Description |
|---|---|---|---|
| message_id | string | yes | Sakari message id. |
No output schema declared.
No examples provided.
sakari_get_template Get template ~42
One message template by id. GET /v1/accounts/{accountId}/templates/{templateId}.
| Name | Type | Req | Description |
|---|---|---|---|
| template_id | string | yes | Sakari template id. |
No output schema declared.
No examples provided.
sakari_list_autoresponders List autoresponders ~40
Autoresponders (automatic replies) configured on the account. GET /v1/accounts/{accountId}/autoresponders.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sakari_list_calls List calls ~165
Call history (voice) with direction, status, duration and contact; filter by contact, conversation, direction, status or date range. GET /v1/accounts/{accountId}/calls.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | string | – | Sakari contact id. |
| conversation_id | string | – | Sakari conversation id. |
| direction | string | – | – |
| from | string | – | Start of the date range (ISO 8601 date-time). |
| limit | integer | – | Results per page, 1-100 (default 25). |
| offset | integer | – | Results to skip (default 0). Pass the previous reply's next_offset. |
| status | string | – | – |
| to | string | – | End of the date range (ISO 8601 date-time). |
No output schema declared.
No examples provided.
sakari_list_campaigns List campaigns ~90
List message campaigns with schedule, template, status and reporting. GET /v1/accounts/{accountId}/campaigns.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results per page, 1-100 (default 25). |
| name | string | – | Filter by name or part of it. |
| offset | integer | – | Results to skip (default 0). Pass the previous reply's next_offset. |
No output schema declared.
No examples provided.
sakari_list_contacts List contacts ~152
List or search contacts (partial matches on name, mobile or email; filter by tag). GET /v1/accounts/{accountId}/contacts.
| Name | Type | Req | Description |
|---|---|---|---|
| string | – | Filter by email or part of it. | |
| first_name | string | – | Filter by first name or part of it. |
| last_name | string | – | Filter by last name or part of it. |
| limit | integer | – | Results per page, 1-100 (default 25). |
| mobile | string | – | Filter by mobile number or part of it. |
| offset | integer | – | Results to skip (default 0). Pass the previous reply's next_offset. |
| tags | string | – | Filter by tag(s). |
No output schema declared.
No examples provided.
sakari_list_conversations List conversations ~82
List conversations (the inbox): contact, last message, unread count, open or closed. GET /v1/accounts/{accountId}/conversations.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results per page, 1-100 (default 25). |
| offset | integer | – | Results to skip (default 0). Pass the previous reply's next_offset. |
No output schema declared.
No examples provided.
sakari_list_forms List lead forms ~85
Lead capture forms with active state, impressions and conversions. GET /v1/accounts/{accountId}/forms.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results per page, 1-100 (default 25). |
| offset | integer | – | Results to skip (default 0). Pass the previous reply's next_offset. |
| q | string | – | Search term across form fields. |
No output schema declared.
No examples provided.
sakari_list_links List tracked links ~46
Shortened tracked links with destination, short URL and click stats. GET /v1/accounts/{accountId}/links.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | Search term across link fields. |
No output schema declared.
No examples provided.
sakari_list_messages List messages ~108
List messages (sent and received) with status, segments, price and timestamps; filter by contact or conversation. GET /v1/accounts/{accountId}/messages.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | string | – | Sakari contact id. |
| conversation_id | string | – | Sakari conversation id. |
| limit | integer | – | Results per page, 1-100 (default 25). |
| offset | integer | – | Results to skip (default 0). Pass the previous reply's next_offset. |
No output schema declared.
No examples provided.
sakari_list_templates List templates ~81
List reusable message templates. GET /v1/accounts/{accountId}/templates.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results per page, 1-100 (default 25). |
| name | string | – | Filter by name or part of it. |
| offset | integer | – | Results to skip (default 0). Pass the previous reply's next_offset. |
No output schema declared.
No examples provided.
sakari_list_webhooks List webhooks ~31
Active webhook subscriptions (message event notifications). GET /v1/accounts/{accountId}/webhooks.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sakari_send_message Send text message ~221
WRITE: SEND REAL TEXT MESSAGES that cost account balance and cannot be recalled. Recipients: phone numbers (international format), existing contact ids, or conversation ids (max 100 in total). Only text people who opted in; Sakari enforces TCPA/CTIA rules and the sender is responsible. Confirm the recipients and the text with the user first. Placeholders like {{firstName}} are filled per contact. POST /v1/accounts/{accountId}/messages.
| Name | Type | Req | Description |
|---|---|---|---|
| confirm_send | boolean | yes | Must be true: you confirm the user approved these recipients and this text, and that the texts go out now. |
| contact_ids | array | – | Existing Sakari contact ids. |
| conversation_ids | array | – | Existing conversation ids to reply into. |
| media_urls | array | – | Public media URLs to attach (MMS). |
| text | string | yes | Message text (the Sakari 'template'). |
| to_numbers | array | – | Recipient phone numbers in international format. |
| type | string | – | SMS (default) or MMS. |
No output schema declared.
No examples provided.
sakari_update_contact Update contact ~135
WRITE: change a contact's name, email or mobile. Sakari's update replaces the contact, so this reads the current contact first and sends it back whole (lists, opt-in, blocked, attributes) with only your changes applied. PUT /v1/accounts/{accountId}/contacts/{contactId}.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | string | yes | Sakari contact id. |
| country | string | – | 2-letter country of the mobile number. |
| string | – | – | |
| first_name | string | – | – |
| last_name | string | – | – |
| mobile | string | – | New mobile number in international format. |
No output schema declared.
No examples provided.
How do I install the Sakari MCP by usefulapi server?
Sakari MCP by usefulapi is a hosted endpoint at https://sakari.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · sakari.usefulapi.io
claude mcp add --transport http io-usefulapi-sakari 'https://sakari.usefulapi.io/mcp'
What is the Sakari MCP by usefulapi server?
Sakari MCP by usefulapi is listed in the public MCP registry as io.usefulapi/sakari. Manage Sakari SMS contacts, conversations, templates and campaigns, and send texts. This page covers its hosted endpoint (https://sakari.usefulapi.io/mcp).
Is the Sakari MCP by usefulapi server safe to use?
Sakari MCP by usefulapi scores 62 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Sakari MCP by usefulapi server expose?
Sakari MCP by usefulapi exposes 23 tools: sakari_get_account, sakari_get_balance, sakari_list_contacts, sakari_get_contact, sakari_create_contact, and 18 more. Their descriptions and schemas cost roughly 1,889 tokens of context every time the server is loaded.
Does the Sakari MCP by usefulapi server require authentication?
Yes. Sakari MCP by usefulapi asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the Sakari MCP by usefulapi server still maintained?
Sakari MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 25 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.