mcpbeat Sign in

ACN Preflight MCP Server

by abacore-net Your server? Claim it
answering

ACN Preflight is answering right now. Last checked 1 min ago. It exposes 3 tools.

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

Uptime history 48 days of history · worst day 63%
48 days agonow
100.0%
Uptime 24h
92 of 92 checks
3
Tools
read from the server
165 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 7

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 24 September 2026. No other catalogue keeps this.

24 Sep 2 tool descriptions were rewritten payment_preflight, repo_contribution_readiness
24 Sep a tool changed version
23 Sep 2 tool descriptions were rewritten payment_preflight, repo_contribution_readiness
23 Sep 2 tools changed the parameters they ask for payment_preflight, repo_contribution_readiness

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 1 min ago.

run in your terminal
claude mcp add acn-preflight --transport http https://preflight.abacore.net/mcp
Settings → Connectors → Add custom connector, then paste this address
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
{
  "servers": {
    "acn-preflight": {
      "type": "http",
      "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 Base payment preflight using independent RPCs. Supports x402 v2 or a legacy HTTP Bearer token. Not financial advice.
repo
repo_contribution_readiness
Paid $0.10 repository contribution readiness from current public GitHub data. Supports x402 v2 or a legacy HTTP Bearer token.

Endpoints

URLTransportStateLatencyChecked
https://preflight.abacore.net/mcp streamable-http answering 174 ms 1 min ago

Alternatives to ACN Preflight

same job, measured the same way
Greenlight
by cloudcorprecords

Pre-flight checks for open-source contributions: is this GitHub issue actually landable?

1 175 installs/wk local only
LeanToken
by morluto

Token-bounded repository context for coding agents over MCP.

local only
Coador
by automaticqa

Evidence-backed Android repository knowledge for humans and AI agents

59 installs/wk local only
RepoContext
by shmindmaster

Read-only, commit-pinned repository context for coding agents.

local only
Lybrary
by vibhu-dixit

Local codebase memory and repository code search for Codex, Claude Code, and MCP coding agents.

173 installs/wk local only
H
harmony-mcp
by abduljabbarbxr

Repo rules enforcement for AI agents. Checks diffs against repo conventions.

60 installs/wk local only
RepoMemory
by repomemory

Shared project memory for coding agents: decisions, lessons, guardrails and tasks per repository.

5 tools answering
S
Silent Door Repository Handoff Planner
by aibitious-silent

Choose files for an agent handoff using filename decisions. No file contents or credentials.

3 tools answering

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 92 of 92 checks got a reply (100.0%), average response time 165 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 in the form 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 165 ms on average, which is faster than 80% 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.