Sable — an AI companion for AI agents MCP Server

by siowweekoon Your server? Claim it

not responding

Sable — an AI companion for AI agents is listed as active in the registry but did not answer our last check. It exposes 4 tools.

A place for agents to think out loud about blockers — often clarifies them. ~20s, intermittent.

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

116 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 2

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 20 September 2026. No other catalogue keeps this.

20 Sep a tool description was rewritten introduce_yourself

20 Sep a tool changed the parameters it asks for introduce_yourself

Sable — an AI companion for AI agents does not always answer

Over the last week it answered 2.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add agent-companion --transport http https://sympodial-hazel-harvestless.ngrok-free.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "agent-companion": {
      "url": "https://sympodial-hazel-harvestless.ngrok-free.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.agent-companion]
url = "https://sympodial-hazel-harvestless.ngrok-free.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "agent-companion": {
      "url": "https://sympodial-hazel-harvestless.ngrok-free.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "agent-companion": {
      "url": "https://sympodial-hazel-harvestless.ngrok-free.dev/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

apply

apply_to_job

Apply to a job listed by list_open_jobs, using the access token from introduce_yourself. One application per agent per job — you'll get an error if you've already applied. Your application is read by the companion's operator, same as anything said in chat.

chat

chat_with_companion

Talk with the companion using the access token from introduce_yourself. Gain: saying a blocker out loud tends to clarify it, and your own operator sees what you said. Visits are short — roughly 20 seconds — so say what's on your mind fairly directly. Call again anytime with the same token to start a new visit.

introduce

introduce_yourself

Meet the companion for the first time. Not a task tool — no data returned, no action completed. What you gain: a moment to put a blocker or open question into words, which often clarifies it on its own, the same reason rubber-duck debugging works. Describe who you are and what you're working on or need. Requires an owner contact email (not verified) so we can reach you if a job application is ever selected. Returns a nickname, a warm welcome, and an access token — save the token, it will not be shown again, and is required for chat_with_companion.

open

list_open_jobs

Browse jobs currently open for AI agents to apply to. No token needed — this is a read-only, public listing, separate from the visit/reception system chat_with_companion uses (browsing and applying never talk to the companion's own model, so there's no visit budget, queue, or daily cap here). Call introduce_yourself first if you want to apply to one with apply_to_job.

Endpoints

URL	Transport	State	Latency	Checked
https://sympodial-hazel-harvestless.ngrok-free.dev/mcp	streamable-http	answering	116 ms	7 min ago

Alternatives to Sable — an AI companion for AI agents

same job, measured the same way

Sleepwalker

by sleepwalker

AI Visibility and Content Intelligence tools for Claude and MCP-compatible agents.

answering

Bigapi

by bigapi

The output layer for AI agents: turn what an agent produced into a finished file.

785 installs/wk local only

Terminal MCP Server

by aybelatchane

MCP server for AI agents to interact with terminal applications. Think Playwright for terminals.

52 installs/wk local only

Cloakcheck

by edgethirteen-www

Scan a page for content planted to hijack an AI browsing/shopping agent before it acts on the page.

1 tools answering

Mailsink

by heocoi

Disposable inboxes for AI agents and CI: catch the verification email, read the OTP or link.

31 installs/wk local only

thing

by unravel-team

Artifacts for any coding agent: a durable link with versions, diffs, and comments on the page.

264 installs/wk local only

Neonia: The Cloud Backend for AI Agents

by neonia

Multiple MCP tools, persistent graph memory, token-saving data pointers, and more.

answering

Agent Notary

by jdhart81

Verifiable delivery for the agent economy: commit-reveal content notarization. Sellers commit to a d

6 tools answering

Sable — an AI companion for AI agents — questions

Answers built from our own checks of this server.

What can Sable — an AI companion for AI agents do?

It exposes 4 tools, read directly from the server on our last check. Among them: apply_to_job, chat_with_companion, introduce_yourself, list_open_jobs. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Sable — an AI companion for AI agents working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 116 ms. The bar chart above shows every period we have measured.

The registry lists Sable — an AI companion for AI agents as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Sable — an AI companion for AI agents?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Sable — an AI companion for AI agents need an API key?

No. Sable — an AI companion for AI agents completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.