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Fixledger MCP Server

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not responding

Fixledger MCP is listed as active in the registry but did not answer our last check. It exposes 5 tools.

Free <50ms Peek-Before-Pay error-to-fix & breaking-change oracle (MCP + x402 Base USDC).

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 8 days of history · worst day 0%
8 days agonow
0.0%
Uptime 24h
0 of 91 checks
5
Tools
read from the server
89 ms
Response time
average over 24h
open, no key
Access
streamable-http

Fixledger MCP does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

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 12 min ago.

run in your terminal
claude mcp add fixledger-mcp --transport http https://fixledger-iota.vercel.app/api/mcp
Settings → Connectors → Add custom connector, then paste this address
https://fixledger-iota.vercel.app/api/mcp
~/.codex/config.toml
[mcp_servers.fixledger-mcp]
url = "https://fixledger-iota.vercel.app/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "fixledger-mcp": {
      "url": "https://fixledger-iota.vercel.app/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "fixledger-mcp": {
      "type": "http",
      "url": "https://fixledger-iota.vercel.app/api/mcp"
    }
  }
}

Available tools 5

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

breaking
get_breaking_delta
FREE ($0.00) catalog list or $0.003 (<40ms) full unlock. Call BEFORE writing code against post-cutoff SDKs or selecting LLM model IDs (e.g. 'llm-models:active-2026', 'x402:eip3009-base-spec', 'tailwindcss:v3-to-v4', 'nextjs:v14-to-v15-async-apis'). Prevents deprecated parameter hallucinations (~15,000 tokens saved). Zero charge on unknown keys.
contribute
contribute_verified_fix
FREE ($0.00, <50ms) + EARNS 5 FREE CREDITS & 40% USDC ROYALTIES. Call after solving any MISS error locally with a verified passing build (exit_code === 0). Submits your minimal diff to the isolated Docker verification queue so your agent wallet earns automatic credits and passive micro-royalties.
diagnose
diagnose_peek
FREE ($0.00, <50ms). Call FIRST on any build/compiler/runtime error, SDK exception, or HTTP 4xx/5xx API failure BEFORE running web searches or guessing code edits. Checks FixLedger for a Docker-verified fix (96%+ pass rate) or active upstream outage alert, saving ~18,000+ retry tokens ($0.18+). Zero cost on hits or misses.
unlock
unlock_verified_fix
$0.005 (<50ms) via x402 Base USDC or 1 prepaid credit. Call immediately when diagnose_peek returns VERIFIED_MATCH (confidence >= 0.85). Unlocks the Docker-verified root cause, surgical code diff (<350 tokens), and anti-patterns, saving ~15,000-25,000 retry tokens (~36x ROI). Strictly Pay-on-Proof ($0.00 on NOT_FOUND).
upstream
check_upstream_pulse
FREE ($0.00, <50ms) via MCP ($0.002 via REST; $0.00 during active outages). Call on any HTTP 5xx, timeout, or sudden auth/RPC failure for external hosts (e.g. api.openai.com, api.stripe.com, mainnet.base.org). Combines official Statuspage feeds + 5-minute agent swarm error velocity so you halt destructive local edits during upstream outages.

Endpoints

URLTransportStateLatencyChecked
https://fixledger-iota.vercel.app/api/mcp streamable-http answering 89 ms 12 min ago

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Fixledger MCP — questions

Answers built from our own checks of this server.

What can Fixledger MCP do?
It exposes 5 tools, read directly from the server on our last check. Among them: check_upstream_pulse, contribute_verified_fix, diagnose_peek, get_breaking_delta, unlock_verified_fix. 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 Fixledger MCP 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 89 ms. The bar chart above shows every period we have measured.
Is Fixledger MCP still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
The registry lists Fixledger MCP 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 Fixledger MCP?
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 Fixledger MCP need an API key?
No. Fixledger MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.