Give Claude on the web (claude.ai) live crypto market data — prices, funding, open interest, liquidations, market regimes, Fear & Greed, dealer gamma and whale activity — without installing anything locally.
Two parts: the Agent Skill (knowledge — uploaded as a capability zip) and the MCP server (live tools — added as a remote Connector). Everything runs in the browser; no Node, no local config.
Settings → Connectors · https://cryptodataapi.com/mcp
Skills · Settings → Capabilities (zip upload)
Agent docs →
Download dist/cryptodataapi-skill.zip from the skills repo, then in claude.ai open Settings → Capabilities and upload it. Claude consults the skill automatically on crypto tasks. See the Agent Skill page for details.
Open Settings → Connectors → Add custom connector and enter the remote URL https://cryptodataapi.com/mcp.
On authentication: the connector UI can't attach a custom X-API-Key header on every plan. If yours can't, use the keyless bootstrap — a few tools (create_free_api_key, list_capabilities, get_exchange_links) work with no key, so ask Claude to call create_free_api_key with your email to mint a free key. Be aware: full data access still needs that key on the header, so where the connector can't send headers, the plain-HTTP path or a local client (Claude Desktop) is the reliable way to authenticate. Where custom headers are supported, set X-API-Key: cdk_live_YOUR_KEY.
Type: Custom connector (remote MCP) URL: https://cryptodataapi.com/mcp Header: X-API-Key: cdk_live_YOUR_KEY (if your plan allows custom headers)
Enable the connector's tools in the chat's tools menu, then ask for a market read — see the example prompts below.
“Mint me a free CryptoDataAPI key for [email protected], then give me today's market snapshot.”
“What's the current market regime and Fear & Greed reading?”
“Compare BTC funding rates across exchanges and flag crowded positioning.”
“Which coins have the highest liquidation risk right now?”
“How healthy is the crypto market today, long-term versus short-term?”
No. The skill is free, and the Free API tier (no card) covers market health, regimes, Fear & Greed, macro, flows, coin profiles and full-universe Hyperliquid funding + open interest. Per-coin quant, gamma and whale signals need Pro.
Partly. The keyless tools (mint a free key, list capabilities, exchange links) work without a header. But most data tools need X-API-Key, and some connector UIs can't send custom headers. If yours can't, authenticate via a local client like Claude Desktop (which passes the key via env), or call our REST API directly. We're honest about this — it's a client limitation, not our server's.
claude.ai is browser-based and connects to the remote MCP server as a Connector — nothing installed. Claude Desktop runs locally and uses the stdio bridge with your key in an env var, which sidesteps the header limitation above.
Missing an agent, a config that changed, or a step that didn't work? Tell us and we'll fix it.