Xsignal is answering right now. Last checked 16 min ago. 35 installs a week from npm. It exposes 6 tools. Last commit 18 Aug 2026.
x402 pay-per-call data tools for Base agents. Flagship get_intent ABSTAINS instead of guessing.
Today is the operative word: we check Xsignal every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 16 min ago.
claude mcp add xsignal --transport http https://xsignal-production.up.railway.app/mcp
{
"mcpServers": {
"xsignal": {
"url": "https://xsignal-production.up.railway.app/mcp"
}
}
}
[mcp_servers.xsignal]
url = "https://xsignal-production.up.railway.app/mcp"
{
"mcpServers": {
"xsignal": {
"url": "https://xsignal-production.up.railway.app/mcp"
}
}
}
{
"mcpServers": {
"xsignal": {
"url": "https://xsignal-production.up.railway.app/mcp"
}
}
}
This one needs environment variables set before it will start:
XSIGNAL_WALLET (Your 0x Base address for 3 free calls per wallet; beyond that the tools return an x402 pay pointer.).
The author declared them in the registry entry; get the values from the project itself.
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
get_token_brief
get_token_intel
get_intent
get_preflight
get_screen
get_signal
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://xsignal-production.up.railway.app/mcp | streamable-http | answering | 264 ms | 16 min ago |
19 pay-per-call data tools for AI agents: crypto/DeFi, web, PDF, FX, weather, DNS. x402 on Base.
Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.
DeFi data API for AI agents — pay-per-call via x402/USDC on Base
Pay-per-call data APIs for AI agents. USDC on Base via x402. 33 tools, no signup.
Pay-per-call web & EU business intelligence for AI agents (x402 USDC on Base). 11 tools.
25 pay-per-call UK data & verification tools for AI agents. x402 USDC on Base; free quote mode.
63 pay-per-call tools for agents: vision, text, data, web, blockchain. USDC on Base via x402.
16 Instagram endpoints. Pay per call in USDC via x402.
Answers built from our own checks of this server.