SignalLayer MCP Server

by xavierleterrible-hub Your server? Claim it

answering

SignalLayer is answering right now. Last checked 4 min ago. It exposes 5 tools.

Machine-native tools for autonomous agents with free routing and x402 USDC pay-per-call.

Uptime history 10 days of history

10 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

1956 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 5

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 October 2026. No other catalogue keeps this.

8 Oct 5 tool descriptions were rewritten agent_preflight, market_execution_intel, signal_layer_catalog and 2 more

Nothing serious here today

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

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add signallayer --transport http https://signallayer.floot.app/_api/mcp

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

{
  "mcpServers": {
    "signallayer": {
      "url": "https://signallayer.floot.app/_api/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.signallayer]
url = "https://signallayer.floot.app/_api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "signallayer": {
      "url": "https://signallayer.floot.app/_api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "signallayer": {
      "url": "https://signallayer.floot.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.

signal

signal_layer_catalog

Free inventory returning service, version, defaultEntryPoint and the four actionable primitives with capabilities and prices; the catalog tool itself is omitted. This is not a task router. If the correct tool is uncertain, prefer signal_layer_router.

signal_layer_router

Free deterministic task-to-tool router, not a full catalog. Returns match, recommendedTool, routingConfidence, reason, missingRequiredInputs and readyToCall HTTP/MCP arguments for the best eligible primitive, or an explicit no_match when nothing fits. It may recommend a paid tool but never authorizes payment; check the live x402 challenge and obtain user approval before spending.

agent

agent_preflight

Inspects public x402 terms or a Base recipient and returns decision.verdict, score, confidence, payment observations, evidence, warnings, freshness and nextActions. It identifies observable mismatches but cannot guarantee safety or authorize spending. Before paying, transferring to, or interacting with an unfamiliar machine resource, x402 endpoint, recipient, or Base address. Do NOT use when: You only need market execution conditions or webpage extraction. Price: $0.01 USDC per call via x402 V2 with separately authorized payment. If unsure, use the free signal_layer_router.

market

market_execution_intel

Analyzes current Base ERC-20 exact-in swap quotes without executing trades. Returns quote-derived buy amount, network-cost bps, size-impact estimate, decision, evidence, warnings and freshness. Quotes can change; no signing or investment advice. Before an exact-in ERC-20 swap on Base when current quote-derived execution conditions, network cost, and size sensitivity matter. Do NOT use when: You need generic historical prices, personalized investment advice, or a signed transaction. Price: $0.03 USDC per call via x402 V2 with separately authorized payment. If unsure, use the free signal_layer_router.

structured

structured_extract

Extracts requested fields from public webpages, returning structured values, field-level evidence, confidence, freshness and partial-result warnings. Missing facts remain null. When requested facts exist on a public webpage but compact structured JSON is needed instead of browsing and parsing the page. Do NOT use when: The source is already structured or the task is generic web search. Price: $0.02 USDC via x402. Use signal_layer_router for free tool selection.

Endpoints

URL	Transport	State	Latency	Checked
https://signallayer.floot.app/_api/mcp	streamable-http	answering	496 ms	4 min ago

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SignalLayer — questions

Answers built from our own checks of this server.

What can SignalLayer do?

It exposes 5 tools, read directly from the server on our last check. Among them: agent_preflight, market_execution_intel, signal_layer_catalog, signal_layer_router, structured_extract. 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 SignalLayer 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 1956 ms. The bar chart above shows every period we have measured.

How do I connect SignalLayer?

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 SignalLayer need an API key?

No. SignalLayer 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.