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

Read-only probes

MCP server · Communication & messaging

Zadarma MCP by usefulapi

By usefulapi.io Verified namespace

Read balance, tariffs, SIP and PBX status and call logs; send SMS in Zadarma.

WebsiteSource codeCommunication & social
Connect to Zadarma MCP by usefulapi
Checks passed
14 / 22

0 failed · 8 not measured

Median response
68 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
12

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Outdated check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 68 ms.

  • Pass
    Valid handshake

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

  • Pass
    Lists tools

    tools/list returned 12 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 68 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 68 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

    16 of 16 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 2026-11-10T23:35:02.28878Z, within 180 days.

  • Not measured
    Open-source licence

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

Start using Zadarma 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 zadarma-mcp-by-usefulapi https://zadarma.usefulapi.io/mcp

Capabilities

Tools 12

zadarma_get_balance

Get the current account balance and its currency. Good first call to check the account works. Zadarma API: GET /v1/info/balance/.

Discovered
zadarma_get_call_price

Get the per-minute call rate in the account's price plan for one phone number (destination, prefix and currency). Zadarma API: GET /v1/info/price/.

Discovered
zadarma_get_call_recording_link

Get a temporary download link for a call recording. Give the call_id (from the recording file name) or the pbx_call_id. Zadarma API: GET /v1/pbx/record/request/.

Discovered
zadarma_get_call_statistics

Get the call log for a period, optionally for one SIP number. Limited to 3 calls per minute per user: do not poll it. For live PBX data, use webhooks instead. Zadarma API: GET /v1/statistics/.

Discovered
zadarma_get_pbx_extension_status

Check whether one PBX extension is online. Zadarma API: GET /v1/pbx/internal/{pbxsip}/status/.

Discovered
zadarma_get_sip_status

Check whether one SIP number is online. Zadarma API: GET /v1/sip/{sip}/status/.

Discovered
zadarma_get_tariff

Get the account's current price plan (tariff). Zadarma API: GET /v1/tariff/.

Discovered
zadarma_list_pbx_extensions

List the extensions of the cloud PBX (number, name and settings). Zadarma API: GET /v1/pbx/internal/.

Discovered
zadarma_list_sip_numbers

List the SIP numbers (IDs, names and status) on the account. Zadarma API: GET /v1/sip/.

Discovered
zadarma_list_sms_templates

List the SMS templates on the account, by category. Zadarma API: GET /v1/sms/templates/.

Discovered
zadarma_list_virtual_numbers

List the virtual (direct) phone numbers rented on the account. Zadarma API: GET /v1/direct_numbers/.

Discovered
zadarma_send_sms

Send an SMS to up to 10 phone numbers. This sends real messages and uses account balance; each send is billed. It is not retried, so check the result before sending again. Zadarma API: POST /v1/sms/send/.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected68 ms12

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