Bring live crypto market data into n8n workflows — prices, funding, open interest, liquidations, market regimes, Fear & Greed, dealer gamma and whale activity — to power alerts, dashboards and AI-agent automations.
Two ways in: give an n8n AI Agent our MCP tools through the MCP Client Tool node (so the agent decides what to fetch), or call any endpoint deterministically with a plain HTTP Request node. Both authenticate with an X-API-Key header. The MCP server is documented on the MCP Server page.
MCP Client Tool node → Endpoint + Header Auth credential
Agent docs →
Add an AI Agent node, then attach an MCP Client Tool sub-node. Set the transport to HTTP Streamable (SSE is deprecated; you need n8n 1.104+) and the endpoint to https://cryptodataapi.com/mcp.
For auth, create a Header Auth credential with name X-API-Key and value cdk_live_YOUR_KEY (the node also supports Bearer and multi-header credentials). The agent can now call any of our MCP tools as part of a workflow.
Transport: HTTP Streamable Endpoint: https://cryptodataapi.com/mcp Auth: Header Auth credential Header name: X-API-Key Header value: cdk_live_YOUR_KEY
For deterministic pulls (no agent), use an HTTP Request node against any of our 180+ endpoints. Send your key as the X-API-Key header. Add ?format=markdown to many endpoints to get clean, LLM-ready text you can drop straight into a message node.
Example: fetch the whole-market snapshot to feed a scheduled report.
Method: GET URL: https://cryptodataapi.com/api/v1/daily Header: X-API-Key: cdk_live_YOUR_KEY
A common pattern: a Schedule trigger every 15 minutes → HTTP Request to /api/v1/regimes (or the get_cycle_regime MCP tool) → an If node that checks whether the regime changed since the last run → a Slack or Telegram node that posts the alert. Mind the rate limits (Free 5/min) and the Cache-Control cadence — polling every 1–30 minutes is plenty.
“When the market regime flips, post a summary to our #trading Slack channel.”
“Every morning at 8am, send a Telegram message with the daily market snapshot.”
“If BTC funding turns sharply positive, alert me — it may signal crowded longs.”
“Log the Fear & Greed index to a Google Sheet every hour.”
“Watch for a spike in liquidations and DM me the top affected coins.”
No. The Free API tier (no card) covers market health, regimes, Fear & Greed, macro, flows, coin profiles and full-universe Hyperliquid funding + open interest — plenty for most alerts. Per-coin quant, gamma and whale signals need Pro.
Use the MCP Client Tool node when an n8n AI Agent should decide which data to pull. Use the HTTP Request node for fixed, scheduled pulls where you already know the endpoint — it's simpler and fully deterministic.
Confirm you're on n8n 1.104+ (older versions only have the deprecated SSE transport), that the transport is set to HTTP Streamable, and that the Header Auth credential sends X-API-Key with a valid cdk_live_ key. A 429 means you've hit the rate limit — slow the schedule down.
Missing an agent, a config that changed, or a step that didn't work? Tell us and we'll fix it.