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ACN Preflight MCP Server

by abacore-net Your server? Claim it
answering

ACN Preflight is answering right now. Last checked 3 min ago. It exposes 3 tools.

Preflight checks for agent repository contributions, bounty work, and Base payments.

Uptime history 9 hours of history
9 hours agonow
100.0%
Uptime 24h
32 of 32 checks
3
Tools
read from the server
125 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check ACN Preflight every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

run in your terminal
claude mcp add acn-preflight --transport http https://preflight.abacore.net/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "acn-preflight": {
      "url": "https://preflight.abacore.net/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.acn-preflight]
url = "https://preflight.abacore.net/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "acn-preflight": {
      "url": "https://preflight.abacore.net/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "acn-preflight": {
      "url": "https://preflight.abacore.net/mcp"
    }
  }
}

Available tools 3

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

bounty
bounty_reality_check
Free fresh GitHub bounty reality check. No registration or email.
payment
payment_preflight
Paid $0.02 technical payment preflight using independent Base RPCs. Not financial advice.
repo
repo_contribution_readiness
Paid $0.10 repository contribution readiness from current public GitHub data.

Endpoints

URLTransportStateLatencyChecked
https://preflight.abacore.net/mcp streamable-http answering 125 ms 3 min ago

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ACN Preflight — questions

Answers built from our own checks of this server.

What can ACN Preflight do?
It exposes 3 tools, read directly from the server on our last check. Among them: bounty_reality_check, payment_preflight, repo_contribution_readiness. 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 ACN Preflight working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 32 of 32 checks got a reply (100.0%), average response time 125 ms. The bar chart above shows every period we have measured.
How do I connect ACN Preflight?
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 ACN Preflight need an API key?
No. ACN Preflight completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is ACN Preflight?
It answers our handshake in 125 ms on average, which is faster than 82% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.