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Evidence for your next connection.

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

Read-only probes

MCP server · Communication & messaging

CosVoice

A real phone number and email for your AI Chief of Staff. Calls, bookings by phone, summaries.

Checks passed
14 / 22

1 failed · 7 not measured

Median response
430 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
27

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
103
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
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 406 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-06-18, serverInfo.name cosvoice.

  • Pass
    Lists tools

    tools/list returned 27 tools.

  • Pass
    Current protocol

    Negotiated 2025-06-18. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 430 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 451 ms over 2 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    2 of 2 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Pass
    Stable tool list

    No tool was removed and no required parameter was added in the last 30 days.

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.

  • Fail
    Parameters documented

    33 of 93 parameters have a description (35%). 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 2026-09-11T15:07:20.968903Z, within 180 days.

  • Not measured
    Open-source licence

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

Start using CosVoice

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 cosvoice https://cosvoice.com/mcp

Capabilities

Tools 27

ack_instructions

Mark owner instructions (texts the owner sent to the line) as handled so they stop being attached to tool results. Pass the ids from the OWNER INSTRUCTIONS notice, or all: true.

Discovered
add_contact

Teach the line a number. Roles: approved (reaches the owner), vip (interrupts), blocked (polite wall).

Discovered
annotate_call

Attach a note to a call (what you did about it, a decision, context for the owner). Shows in the dashboard next to the debrief.

Discovered
book_reservation

Reserve a table by phone: the line calls the venue, negotiates the time, answers the host's questions (name, callback, email), records policies, and never pays. Give the venue's phone number, party size, date/time, and the acceptable window or fallbacks. Returns reservation_id and call_id; read the outcome with get_call or list_reservations before telling the owner anything is confirmed. Statuses: confirmed, alternative_confirmed, waitlisted, hold, requires_online, needs_owner, callback_later, no_availability, declined_by_venue, voicemail, not_reached.

Discovered
create_line

Set up the phone line: claim a number (pick one from search_numbers or just give an area code), name the persona, and register the owner's mobile. An account can own several lines; each needs its own paid plan (if none is waiting, this returns a checkout link). Ask the owner before opting them in to texts.

Discovered
forward_email

Forward one received email to one of the line's own inboxes: its forwarding, notification or Bot inbox, or the owner's sign-in address (defaults to the forwarding inbox). It cannot forward to any other address, and a new inbox must be confirmed by its owner first.

Discovered
get_account

Who this key belongs to and whether a line exists yet.

Discovered
get_call

Status, structured notes, outcome, transcript, and annotations for one call.

Discovered
get_email

Full text of one email the line received.

Discovered
get_line

Number, email identity, persona, owner, and minutes remaining this period.

Discovered
get_settings

Persona, voice, greeting, standing instructions, owner, notifications, forwarding, webhook, Bot push, SMS consent.

Discovered
list_calls

Recent calls with summaries, newest first.

Discovered
list_contacts

Owner, approved, VIP, and blocked numbers.

Discovered
list_emails

Email received at and sent from the line's address, newest first (direction inbound|outbound), with forwarding status.

Discovered
list_history

Unified history of calls, texts, and email with optional search. The same table as the dashboard.

Discovered
list_integrations

Partner integrations available through this line (groceries, food, reservations, travel…), with status and connect links. Partner tools appear as <partner>__<tool>.

Discovered
list_messages

Recent texts to and from the line.

Discovered
list_reservations

Recent reservation requests with their status and the venue's stated policies.

Discovered
place_call

Have the line call a real number and hold a live voice conversation on the owner's behalf. Brief it like a human assistant: who to ask for, what you want, acceptable fallbacks, what to do on voicemail. Set connect_owner when the owner wants to be put through once a human is reached (the line waits on hold, then rings the owner). Asynchronous: poll get_call or wait for the call.completed webhook.

Discovered
recent_activity

Everything since a timestamp: calls, texts, emails. Catch-up when webhooks were missed.

Discovered
remove_contact

Remove a number from the contacts list (not the owner).

Discovered
search_numbers

Find available phone numbers in a US area code for a new line.

Discovered
send_email

Send an email from the line's own address (handle@cosvoice.com). Reply to a message the line received by passing reply_to_email_id (recipient and subject fill in, threading is kept), or write to the owner. The line may only email people who have emailed it first, its owner, or its Bot inbox. Plain text; keep it short and sign as the line.

Discovered
send_text

Send an SMS from the line's number. Respects STOP opt-outs. Read the delivery field in the result: while CosVoice's carrier registration (10DLC) is in progress, texts from the line may be filtered by US carriers and not arrive; texts to the line and calls always work.

Discovered
set_bot_push

Have CosVoice start YOU the moment something arrives, instead of you polling. Give it the webhook URL and key of a routine of yours that has a Webhook trigger (Grok Bot: Routines → New → trigger Webhook; the URL and a crsr_ key appear). CosVoice POSTs a JSON body with what_to_do plus the ids when the owner texts an instruction, an email arrives, or a call finishes; that body becomes the routine's input. Pass an empty url to turn it off. events limits which moments wake you (default instruction, email, call); add "message" to also be started when anyone other than the owner texts the line. When you pass a key, CosVoice sends a test push at once and returns the result in test: read it, a saved key is not a working key until the routine has accepted one.

Discovered
set_webhook

Set (or clear with an empty url) the HTTPS webhook that receives call.completed, message.received, and email.received. Returns the signing secret once.

Discovered
update_settings

Change any of: name, voice, greeting, instructions, owner_name, owner_phone, timezone, notify_email, agent_email, morning_brief (daily digest on/off), morning_brief_hour (0–23 local), forward_email, forward_mode (relay|raw|off), sms_opt_in, answer_rings (0|1|2). Only the fields you pass change.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected406 ms27
Connected453 ms27