INDIVIDUAL MCP TOOL

chain_token_balance

ERC-20 token balance of a Base mainnet address via multi-provider JSON-RPC, incl.

greyridgesignals.ainone authenticationAvailability not checked

LIVE ENDPOINT

https://x402-data-api.sigrunner.workers.dev/mcp

No auth detected

Connect to this endpoint to inspect the live schema for chain_token_balance and invoke it with your own arguments.

{}

Inferred read-only · medium confidence · heuristic, not a guarantee.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.x402-data-api]
url = "https://x402-data-api.sigrunner.workers.dev/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "x402-data-api": {
      "type": "http",
      "url": "https://x402-data-api.sigrunner.workers.dev/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: x402-data-api
Remote MCP URL: https://x402-data-api.sigrunner.workers.dev/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "x402-data-api": {
      "url": "https://x402-data-api.sigrunner.workers.dev/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "x402-data-api": {
      "type": "http",
      "url": "https://x402-data-api.sigrunner.workers.dev/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "x402-data-api",
  "transport": "streamable-http",
  "url": "https://x402-data-api.sigrunner.workers.dev/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

enrich_tech_risk — Security enrichment: tech-stack fingerprint + CVE mapping + EPSS + CISA KEV + verdict (clear/review/block) for a domain.
enrich_domain — Firmographic + tech-stack enrichment: RDAP registrant/registrar, DNS records, full subdomain enumeration + certificate-transparency history, tech-stack fingerprint, verdict (clear/review/block, based on domain age) for a domain.
scan_mcp_server — Security-audit a target MCP server for prompt-injection / tool-poisoning.
scan_mcp_preview — FREE preview scan of a target MCP server for tool-poisoning / prompt-injection.
crypto_prices — Live spot token prices (price, change_24h, symbol, confidence, timestamp) for CoinGecko ids, sourced from DefiLlama.
crypto_funding — Live cross-venue perpetual-futures funding rates from Hyperliquid+OKX+dYdX (per-venue rate, arb spread in bps, cheapest-long/richest-short venue, premium/basis, annualized_hl, annualized_okx, LONGS_PAY/SHORTS_PAY/NEUTRAL signal, next_funding_ts, mark/oracle price, open interest, day volume), ranked by volume.
defi_yields — Live DeFi lending/LP yield pools (project, chain, symbol, pool id, APY breakdown incl.
pm_markets — Live Polymarket prediction-market data — question, outcomes, outcome prices, bestBid/bestAsk/spread, volume24hr/volume1wk, oneDayPriceChange, clobTokenIds, conditionId, category tags, liquidity, end date — ranked by volume24hr.