Coin Cap
Free cryptocurrency market data API with websocket support.
Open the official app on coincap.io
This tool is hosted by its maintainers. Click below to open coincap.io in a new tab — it's their official demo.
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Use it free
Open the official tool or demo — no account needed.
Self-host it
Run the open-source version on your own infrastructure.
What is Coin Cap?
CoinCap is an open-source cryptocurrency data aggregation tool designed to provide real-time market prices, market capitalizations, and exchange statistics for digital assets. It serves traders, investors, and developers seeking reliable crypto market data without requiring complex infrastructure. The tool addresses the challenge of consolidating fragmented cryptocurrency data sources into a single, accessible platform. By offering both free and premium features through its CoinCap PRO subscription, it caters to users ranging from casual observers to institutional entities needing structured data for analysis. CoinCap's primary function is to streamline cryptocurrency market transparency by offering standardized metrics and tools for data integration.
How it works
CoinCap.io is a web-based platform that aggregates cryptocurrency price data, market capitalization rankings, and exchange statistics. Its core purpose is to deliver accurate, up-to-date information about digital assets to users worldwide. The tool's open-source nature allows developers to contribute to its codebase, while its PRO version offers enhanced features like API access and staking rewards through the MOR token. CoinCap provides real-time price tracking for thousands of cryptocurrencies, along with market cap rankings and exchange volume metrics. Its API enables programmatic access to this data, supporting integration with trading platforms or analytical tools.
How to use it
- 1Visit CoinCap.io to view real-time cryptocurrency prices and market caps. 2. Explore the 'Exchanges' section for trading volume and liquidity data. 3. Register for CoinCap PRO to access API keys and staking features. 4. Use the API documentation to integrate data into custom applications. Practical tips include bookmarking key asset pages for monitoring, leveraging the API for automated reporting, and participating in staking programs to offset data costs.
What it can do
- crypto api
Use cases
Assumptions and limitations
Assumptions
- source: https://github.com/CoinCapDev
- license: MIT — free to use
- privacy: Opens an external demo
Limitations
- Limited historical data retention compared to specialized analytics platforms
- Free tier lacks advanced filtering options for market data
- Staking rewards depend on network activity and token supply dynamics
- API rate limits may restrict high-frequency data retrieval
- No mobile application for on-the-go access
Understanding the result
Free cryptocurrency market data API with websocket support.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (MIT).
- Built with
- (https://github.com/CoinCapDev)
- License
- MIT
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with https://github.com/CoinCapDev. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- MIT
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- MIT License
Upstream project
Frequently asked
How does CoinCap ensure data accuracy?
CoinCap aggregates data from multiple cryptocurrency exchanges and market sources, cross-referencing values to minimize discrepancies. The PRO version prioritizes data from major exchanges with high liquidity. Users should note that price data may lag slightly due to network delays, and market data is subject to exchange-specific reporting standards.
How does the CoinCap API work?
The CoinCap API provides programmatic access to cryptocurrency market data via REST endpoints. Developers can retrieve price data, market caps, and exchange statistics using HTTP requests. The API requires authentication for PRO features, with rate limits varying based on subscription tier. Documentation includes examples for Python, JavaScript, and other common programming languages.
How do I stake MOR tokens?
To stake MOR tokens, users must first obtain them through the CoinCap PRO platform. Navigate to the staking section, select a staking pool, and deposit tokens. Rewards are distributed periodically based on network activity and token supply. Users should verify the staking contract details and understand potential risks like token lock-up periods.
How does CoinCap compare to CoinGecko?
CoinCap and CoinGecko both provide cryptocurrency market data, but CoinCap emphasizes API integration and staking incentives. CoinGecko offers more detailed on-chain analytics and a broader range of historical data. CoinCap's PRO version includes unique staking features absent in CoinGecko, while CoinGecko's open-source tools allow deeper customization for developers.
What should I do if my API key is invalid?
An invalid API key typically indicates expiration or incorrect formatting. Check the CoinCap PRO dashboard for key renewal instructions. Verify that the key matches the subscription tier's access level. If issues persist, contact support with the error message and details about the API endpoint being used.