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

Read-only probes

MCP server · Communication & messaging

Slack MCP by Nova (CIVAI)

By nova.civai.co Verified namespace

Use Slack from chat: see channels, catch up on messages, post updates, and reply in threads in your…

WebsiteCommunication & social
Connect to Slack MCP by Nova (CIVAI)
Checks passed
11 / 22

3 failed · 8 not measured

Median response
1274 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
17

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Outdated check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?
220
Publisher identityCan the publisher be traced to its source?
312

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 1274 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name Slack MCP by Nova (CIVAI).

  • Pass
    Lists tools

    tools/list returned 17 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 1274 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 1274 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.

  • Fail
    Parameters documented

    17 of 42 parameters have a description (40%). The bar is 80%.

  • Fail
    Safety hints

    17 tools set neither readOnlyHint nor destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Fail
    Source repo linked

    No 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 2026-11-02T09:03:34.625395Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Slack MCP by Nova (CIVAI)

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 slack-mcp-by-nova-civai https://nova.civai.co/mcp/agents/mcp-slack_android

Capabilities

Tools 17

channel_info

Channel name and member count for a channel id.

Discovered
confirm_email_signin

Start Slack email sign-in.

Discovered
conversation_history

Fetch recent messages in a channel.

Discovered
create_channel

Create a channel (may be restricted on some workspaces).

Discovered
delete_message

Delete one of your messages.

Discovered
list_channel_members

List member user ids in a Slack channel.

Discovered
list_channels

List Slack channels and group DMs (mobile client.channels).

Discovered
list_workspace_users

List users in the workspace.

Discovered
list_workspaces

List workspaces after email confirmation.

Discovered
open_conversation

Open a DM conversation with a Slack user id.

Discovered
post_message

Post a message to a Slack channel or DM using the mobile user session.

Discovered
post_message_rich

Post using mobile Block Kit blocks (message_blocks_json).

Discovered
reply_thread

Post a reply in a thread.

Discovered
search_people

Search people by name or email fragment.

Discovered
session_status

Verify Slack mobile session (run before other tools).

Discovered
thread_replies

Read messages in a thread.

Discovered
user_boot

Workspace client bootstrap after login.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected1274 ms17

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