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KEYLESS API

Zero Setup Required Real Market Data

Call live CoinMarketCap data right now: no account, no API key, no email address. The Keyless API gives you 36 supported endpoints across the Standard API and DEX API, available immediately.

Try Keyless Now

API Docs

Pricing

36Keyless Endpoints

19Standard API Routes

17DEX API Routes

0Steps to Get Started

No API Key Needed. Just Try It.

Skip the signup. Skip the key. Make real requests against live CoinMarketCap data with zero setup.

https://pro-api.coinmarketcap.com/public-api

Call Example

# No key, no headers, no account — real response
curl -G "https://pro-api.coinmarketcap.com/public-api/v1/cryptocurrency/listings/latest" \
  --data-urlencode "start=1" \
  --data-urlencode "limit=10" \
  --data-urlencode "convert=USD" \
  -H "Accept: application/json"

Single Path Prefix

All keyless requests start with a single path prefix. No headers, no authentication. The /public-api path signals a keyless call. Supported routes accept GET requests without the X-CMC_PRO_API_KEY header.

Response Example

{
  "status": {
    "timestamp": "2026-05-26T09:05:03.520Z",
    "error_message": null,
    "elapsed": 31,
    "credit_count": 1
  },
  "data": { /* endpoint-specific payload */ }
}

What a keyless response looks like

Keyless endpoints return the same standard JSON envelope as authenticated Pro API endpoints. Build once, your parsing logic carries directly into authenticated access. Same status object, data shapes, and error codes as the Pro API — build once, upgrade with zero rework.

Three Live Requests to Try First

A useful API test starts with responses that could power an actual feature. These three requests cover ranked assets, market-wide context, and a CMC-native indicator.

Latest Cryptocurrency Listings

https://pro-api.coinmarketcap.com/public-api/v3/cryptocurrency/listings/latest

Ranked cryptocurrency market data: fields for price tables, discovery screens, and portfolio experiments.

Open Docs

Global Cryptocurrency Market Metrics

https://pro-api.coinmarketcap.com/public-api/v1/global-metrics/quotes/latest

Total market cap, 24-hour volume, Bitcoin dominance, Ethereum dominance, and additional market-wide values.

Open Docs

CMC Crypto Fear and Greed Index

https://pro-api.coinmarketcap.com/public-api/v3/fear-and-greed/latest

A CoinMarketCap-native market sentiment signal: latest index value, classification, and update time.

Open Docs

All CoinMarketCap Keyless Endpoints

A curated subset of Standard API and DEX API routes: ranked assets, market-wide indicators, index data, DEX pairs, liquidity, swap activity, holders, and on-chain chart data.

Standard API

DEX API

Standard API

Cryptocurrency

CoinMarketCap ID map

/v1/cryptocurrency/map

Metadata

/v2/cryptocurrency/info

Listings (v3)

/v3/cryptocurrency/listings/latest

Listings latest

/v1/cryptocurrency/listings/latest

Quotes latest

/v3/cryptocurrency/quotes/latest

Global Metrics

Global metrics latest

/v1/global-metrics/quotes/latest

Fear & Greed latest

/v3/fear-and-greed/latest

Fear & Greed historical

/v3/fear-and-greed/historical

Altcoin Season latest

/v1/altcoin-season-index/latest

Altcoin Season historical

/v1/altcoin-season-index/historical

CMC Index

CMC 100 latest

/v3/index/cmc100-latest

CMC 100 historical

/v3/index/cmc100-historical

CMC 20 latest

/v3/index/cmc20-latest

CMC 20 historical

/v3/index/cmc20-historical

Exchange

Exchange ID map

/v1/exchange/map

Tools / Utilities

Price conversion

/v2/tools/price-conversion

DEX API

Token & Pairs

DEX Pair Listings Latest

/v4/dex/spot-pairs/latest

DEX Pair Quotes Latest

/v4/dex/pairs/quotes/latest

Token Detail

/v1/dex/token

Token Price

/v1/dex/token/price

Token Liquidity

/v1/dex/token-liquidity/query

Token Pools

/v1/dex/token/pools

Token Search

/v1/dex/search

Security Detail

/v1/dex/security/detail

Swap List

/v1/dex/tokens/transactions

Liquidity Change List

/v1/dex/liquidity-change/list

Holders

Holders List

/v1/dex/holders/list

Holder Count

/v1/dex/holders/count

Holder Detail

/v1/dex/holders/detail

Platform

Platform List

/v1/dex/platform/list

Platform Detail

/v1/dex/platform/detail

OHLCV / K-Line

K-Line Candles

/v1/k-line/candles

K-Line Points

/v1/k-line/points

What You Can Build Without an API Key

Supported keyless routes cover enough real product territory to validate a full working prototype, from rankings and market overviews to sentiment displays, token discovery, and on-chain data interfaces.

Live Price Widget

Call listings or simple price through the Keyless Public API path and display current market data (symbols, prices, and market cap for the top coins) with no authentication.

/v1/cryptocurrency/listings/latest

/v1/simple/price

Portfolio Valuation Prototype

Store selected CoinMarketCap asset IDs and retrieve latest prices for those assets. Stable CMC IDs don’t depend on ticker symbols alone, ideal for watchlists and portfolios.

/v1/cryptocurrency/map

/v3/cryptocurrency/quotes/latest

Market Sentiment Dashboard

Combine prices with the CMC Crypto Fear and Greed Index to show whether conditions are fearful, neutral, or greedy. Also test Altcoin Season Index, CMC100, and CMC20 routes.

/v3/fear-and-greed/latest

/v1/altcoin-season-index/latest

DEX Token Discovery

Test selected DEX routes for token, pair, pool, liquidity, security, holder, and K-line workflows before building a full authenticated integration, great for early DeFi dashboards.

/v1/dex/search

/v1/dex/token/pools

Moving From Keyless Access to the Pro API

When you’re ready for higher limits and the full catalog, the switch is a few small changes — not a rewrite.

Keyless request

cURL

curl https://pro-api.coinmarketcap.com/public-api/v1/cryptocurrency/listings/latest

CoinMarketCap Keyless API

Keyless Public API

Account Not Required

No API Key Required

Authenticated request

cURL

curl https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest \
  -H "X-CMC_PRO_API_KEY: <YOUR_KEY>"

Authenticated Pro API

Full Access

Account Required

API Key Required

STEP 01Remove /public-apiDrop the /public-api prefix from the base URL.

STEP 02Add your API keySend your key in the “X-CMC_PRO_API_KEY” request header.

STEP 03Keep response handlingSame JSON envelope — your parsing code stays the same.

STEP 04Scale your planMove from Basic up to Enterprise as usage grows.

Frequently Asked Questions

What is the Keyless API?

The Keyless API lets you call selected CoinMarketCap API routes without creating an account or sending an API key.

Keyless requests use the /public-api path. Supported routes accept GET requests without the X-CMC_PRO_API_KEY header, so you can inspect real CoinMarketCap response formats before setting up credentials.

Use it when you want to test whether CoinMarketCap data fits a prototype: market listings, quotes, global metrics, CoinMarketCap indicators, DEX token data, pools, holders, liquidity or chart data. For the current supported route list, use the Keyless API documentation.

How do I get started?

Call the supported endpoint under:

https://pro-api.coinmarketcap.com/public-api

No registration is required for supported Keyless routes. Once the response shape works for your prototype, create a free API key at pro.coinmarketcap.com, remove /public-api from the URL and add the X-CMC_PRO_API_KEY header.

That migration path keeps the first test simple while giving the project a clear route into authenticated access when it needs usage tracking, higher limits or production use.

Does CoinGecko have an equivalent?

Yes. CoinGecko also offers a Keyless Public API for crypto market data and onchain analytics, with no account or API key required.

For developers building with CoinMarketCap data, the practical difference is where the test begins. CoinMarketCap Keyless access lets you start inside the CoinMarketCap API environment, so you can test CoinMarketCap rankings, global metrics, CoinMarketCap indexes, Fear and Greed, DEX token data and related routes before creating credentials.

How fresh is the data?

Keyless calls use supported live CoinMarketCap endpoints, so freshness follows the underlying route.

For most REST market-data workflows, plan around the update frequency documented for the relevant endpoint and plan. Use WebSocket access when the product needs pushed live data instead of REST polling. Use x402 when a product or agent needs pay-per-request access to supported routes. x402 is an access model, not the general freshness layer.

What is x402?

x402 is CoinMarketCap’s pay-per-request access path for supported data calls and agent workflows.

Instead of starting with a monthly subscription, a developer or AI agent can pay per supported request in USDC. Check the x402 documentation for current per-request pricing and supported routes.

Use x402 for agent workflows, lightweight experiments or occasional requests. Use a regular API plan when the product needs predictable monthly limits, authenticated account management, broader endpoint access or high-volume usage.

Is there an MCP server for AI agents?

Yes. CoinMarketCap provides an MCP server for AI-agent workflows at:

mcp.coinmarketcap.com/mcp

MCP gives agents a structured way to use CoinMarketCap data instead of scraping pages or manually wiring every API call. It is designed for agent workflows that need market data, technical analysis, on-chain metrics, derivatives, news, trends or semantic search.

Use MCP when an AI agent needs CoinMarketCap data in a tool-friendly format. Use the regular API when you are building a standard app, dashboard, wallet, trading tool or backend service.

READY TO BUILD?

Real Crypto Data. Zero Setup. No Account Required.

Your first live response to a supported endpoint is one curl away. No signup needed.