Research

Top Free APIs Every Developer Should Know in 2024

Discover the best free-to-use APIs for crypto, AI, and data apps. See which trusted APIs developers rely on for robust features, reliability, and easy integration.
Token Metrics Team
5
MIN

APIs are the silent workhorses powering today’s most innovative software. Whether you’re a crypto enthusiast automating portfolio analysis, or a web developer looking to enrich your app with real-time data, the right free API can supercharge your project—and your productivity. But with thousands out there, which free APIs truly stand out for reliability, ease of use, and breadth of features?

Why Free APIs Matter for Developers and Innovators

APIs—Application Programming Interfaces—allow applications to seamlessly interact, share insights, and build on each other's strengths. The best free-to-use APIs democratize access to powerful datasets, functionalities, and market signals. For crypto, AI, fintech, or simply creative digital projects, high-quality APIs can:

  • Accelerate product development with ready-made data and processing tools
  • Enable experiments in new tech areas without initial investment
  • Foster community-driven innovation thanks to open documentation and easy onboarding

However, not all free APIs are created equal. Some offer limited usage tiers, outdated data, or spotty reliability. That’s why informed selection is crucial, especially for mission-critical apps.

Top Free APIs for Cryptocurrency and Blockchain Projects

The crypto landscape thrives on transparency and timely data. For enthusiasts building bots, dashboards, or research tools, these free APIs consistently earn praise:

  • CoinGecko API: Delivers comprehensive token prices, volumes, and market data. Free tier includes generous rate limits and supports thousands of assets.
  • CoinMarketCap Public API: Offers price feeds and historical data for cryptocurrencies, ideal for analysts and monitoring tools.
  • Etherscan API: The go-to source for Ethereum blockchain explorers, enabling developers to fetch address balances, smart contract source, and token transactions for free.
  • Glassnode API (Free Tier): On-chain metrics and indicators, including supply activity and network health, are freely accessible for non-commercial use.

These APIs are often foundational building blocks for portfolio trackers, on-chain analytics, and even education platforms. Crucially, they’re maintained, well-documented, and support broad application ranges without requiring payment—or personal information—at the entry level.

Best Free APIs Across Data, AI, and Web Development

If your project stretches beyond crypto, the open web is full of powerful (yet freely accessible) APIs for various domains:

  1. OpenWeatherMap API: Real-time and forecast weather data for any global location. Great for travel, logistics, and even DeFi insurance products.
  2. NewsAPI: Aggregates global headlines and breaking news. Many developers use it for sentiment dashboards, trend-following, or daily newsletters.
  3. OpenAI API (trial/limited free tier): Enables natural language understanding, chatbots, and text processing. Developers can access some GPT models for experimentation on a free plan.
  4. RapidAPI Hub: A directory hosting hundreds of free-to-use APIs in every possible category—from sports to sentiment analysis. RapidAPI offers unified onboarding and monitoring.
  5. Public-APIs (GitHub Community List): An open-source, crowd-curated list of categorized free APIs, kept up to date for AI, datasets, image processing, and more.

These tools let you build everything from machine learning prototypes to hobbyist weather notifiers. Carefully review usage limits and (where relevant) data privacy arrangements as you scale your innovation.

How to Choose and Integrate Free APIs Securely

Not every free API is equally reliable or secure. Situations to consider include:

  • Data Accuracy and Uptime: Ensure the provider offers a clear SLA or uptime history, especially for finance or real-time apps.
  • Privacy: Favor APIs that don’t require sensitive personal data unless absolutely necessary.
  • API Limits and Scaling: Free tiers are often rate-limited. Consider future upgrades and monitor usage to avoid service interruptions.
  • Documentation and Community: Well-documented APIs, ideally with samples and open forums, accelerate integration and reduce confusion.

When integrating, secure your keys in environment variables, use HTTPS endpoints, and avoid exposing credentials in public sources. Always plan for error handling and fail-safes.

The Growing Role of Free APIs in AI and Analytics

The explosion of AI-generated insights and predictive analytics owes much to accessible APIs. With free endpoints for data labeling, model inference, and sentiment tracking, even small development teams can launch powerful, AI-enhanced products. Projects like Hugging Face’s free models hub or the OpenAI playground democratize once-complex capabilities, unlocking new digital frontiers for research and public good.

For crypto analysis, AI-backed APIs—like those from Token Metrics—combine quantitative techniques and machine learning to highlight actionable trends and on-chain activity. As free API ecosystems expand, expect an even richer toolbox for developers at every skill level.

Build Smarter Crypto Apps & AI Agents with Token Metrics

Token Metrics provides real-time prices, trading signals, and on-chain insights all from one powerful API. Grab a Free API Key

What is an API and why are they essential in crypto or AI?

APIs let different software systems communicate and share data or services. In crypto, APIs deliver live price data, transaction histories, and on-chain analytics. In AI, APIs allow access to model inference, data labeling, and natural language processing, lowering barriers for developers and researchers.

Are free APIs truly reliable for production use?

Many free APIs maintain high uptime and data accuracy, especially those from reputable organizations. However, they may have stricter rate limits, fewer support options, or evolving terms. For mission-critical operations, always implement redundancy and review official service level commitments.

Which are the best free APIs for cryptocurrency analysis?

Popular options include CoinGecko, CoinMarketCap, and Etherscan for price and blockchain data. For AI-driven insights, platforms like Token Metrics provide actionable intelligence with robust free tiers.

How do I keep my API keys and data secure?

Never hardcode keys in public repos or client-side code. Use secure storage (environment variables or vaults), enforce HTTPS, rotate keys regularly, and monitor API access logs to identify anomalies.

What should I check before integrating any free API?

Review documentation, data freshness, rate limits, provider reputation, privacy compliance, and supported SDKs. Test endpoints in your dev environment and plan for graceful error handling to ensure resilience.

Disclaimer

This article is for informational purposes only and does not constitute financial, investment, or legal advice. Always perform due diligence when evaluating APIs, tools, or digital assets. No endorsement is implied. Third-party API providers may change terms at any time; verify details before production use.

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Token Metrics Team
Token Metrics Team

Recent Posts

Research

Andrena and the Rise of DePIN: Decentralized Internet in 2025

Token Metrics Team
8 min
MIN

Introduction:
Decentralized Physical Infrastructure Networks (DePINs) are rapidly emerging as one of the most transformative sectors in the blockchain space. In 2025, projects like Andrena are pushing the boundaries of what’s possible by bridging real-world hardware with decentralized protocols. This blog takes a closer look at the DePIN thesis, Andrena’s approach, and why this project is on the radar of top investors and analysts.

What Is DePIN?

DePIN stands for Decentralized Physical Infrastructure Networks. It refers to blockchain-powered networks that coordinate real-world infrastructure using token-based incentives. Use cases include:

  • Wireless internet (e.g., Helium)
  • Sensor networks (e.g., WeatherXM)
  • Storage and compute (e.g., Filecoin, Akash, Arweave)
  • Energy grids (e.g., PowerPod)

In short, DePINs decentralize infrastructure deployment and management using blockchain-based coordination tools.

Why DePIN Matters in 2025

  1. Infrastructure Gaps: Billions remain unconnected to the internet or lack access to basic digital services. DePINs offer a way to close these gaps without reliance on centralized telecoms.
  2. Token Incentives for Network Participation: Hardware operators are rewarded for contributing bandwidth, compute, or coverage—creating a new economic model.
  3. Real-World Utility: Unlike speculative tokens, DePIN projects often provide visible, tangible value from day one.

Introducing Andrena: The Helium of the Internet?

Andrena is a DePIN project building a decentralized internet backbone through a combination of physical devices and blockchain protocols. The project is developing a hardware device called Black Box, expected to launch in July.

Key features:

  • Distributed, peer-to-peer wireless coverage
  • Web3 native incentives for node operators
  • No reliance on centralized ISPs
  • Tentative deployments in New York City, Mexico City, and Accra
  • Deep integration with Helium Network and its infrastructure

Andrena aims to give individuals and communities the power to run their own internet access points and be compensated in a decentralized system.

Why It’s Generating Buzz

Token Metrics researchers flagged Andrena as a top pick for long-term infrastructure exposure. Here's why:

  • Backed by Top VCs: In its upcoming Series B, Andrena is reportedly raising funds from major firms including Polychain Capital, Archetype, Wintermute, and Coinbase Ventures.
  • Mass Market Vision: The goal is not just to serve crypto-native users, but also everyday consumers who simply want affordable, decentralized internet access.
  • Multi-layered Integration: Andrena will offer both physical routers and a browser extension, enabling different levels of participation.

Strategic Partnerships and Rollout

The project is currently in soft-launch mode with localized pilots and is pursuing exchange listings later this year. While details remain limited, the focus is on building a global decentralized ISP layer—a radical shift from the existing internet access model.

Why Andrena Could Succeed Where Others Struggled

Previous attempts at decentralized internet often failed due to:

  • Poor hardware UX
  • Limited adoption outside of crypto users
  • Unclear monetization models

Andrena appears to be addressing these pain points with:

  • Consumer-grade devices
  • Partner integrations (e.g., Helium)
  • Clear token utility tied to network usage and coverage
  • A well-capitalized, experienced founding team

Risks and Unknowns

As with all early-stage infrastructure projects, there are risks:

  • Uncertain regulatory frameworks around ISPs
  • Capital intensity of hardware production and distribution
  • Network growth dependent on physical deployment
  • Limited token utility details at this stage

Investors and builders should stay informed as more information becomes public.

How Token Metrics Is Tracking DePIN Growth

The Token Metrics platform is actively monitoring the DePIN space through metrics such as:

  • TVL (Total Value Locked) in related ecosystems
  • Developer activity and GitHub velocity
  • On-chain signal strength and token accumulation
  • Fundamental and technical ratings

Projects like Andrena and its ecosystem partners are closely watched for early indicators of momentum.

Final Thoughts

DePIN is one of the most compelling frontiers in crypto. It offers real-world, real-time applications that go far beyond speculation. Andrena is at the center of this movement, blending telecom hardware, Web3 incentives, and global deployment.

While it's still early, the signs are promising. From reputable backers to ambitious global plans, Andrena is a project worth watching in 2025 and beyond.

Research

Meme Coins in 2025: Why They’re Still Outperforming the Crypto Market

Token Metrics Team
8 min
MIN

Introduction:
Even in a sluggish crypto market, meme coins continue to outperform many other asset classes. In 2025, these highly speculative assets are not only surviving—some are thriving. This blog examines the current state of the meme coin market, what’s driving the activity, and how on-chain data and crypto analytics can help decode the chaos.

Meme Coins: Still Relevant in 2025?

Despite a broadly bearish macro environment, meme coins remain among the few bright spots in the crypto market. In the latest Token Metrics research webinar, several meme tokens showed outsized returns, including:

  • Gorbagana – up over 50% in a day
  • Useless Coin – jumped 40% in 24 hours
  • Startup Coin – nearly 9x returns over the past month

These tokens operate at low market caps and often launch with little or no formal whitepaper or utility. However, the power of narrative, social engagement, and rapid speculation continues to drive short-term gains.

Why Meme Coins Are Performing in a Bear Market

1. Low Liquidity, High Volatility:
Small-cap meme tokens can easily generate parabolic moves with modest capital inflows.

2. Community-Led Narratives:
Tokens like Useless Coin and Startup thrive on viral momentum from crypto-native communities, particularly on X (Twitter) and Telegram.

3. Whale Activity as a Signal:
Token Metrics analysts observed that whales have been accumulating select meme coins. This isn’t an endorsement—but it’s a data point. Monitoring on-chain whale behavior offers clues about where smart money is moving.

The Gobagana Case Study

Gobagana was cited as a high-risk Solana fork with minimal public information, yet it rapidly gained traction. On-chain analysis revealed:

  • Whale wallets accumulating in the early phase
  • Early VC insiders (e.g., those connected to Big Brain VC) engaging with the token
  • Rapid social engagement despite a small follower base

The takeaway? Even opaque meme coins can trigger major rallies—particularly if accumulation patterns align with social volume.

Risk Management and Red Flags

The meme coin market is not without risk. The Token Metrics team emphasized several cautions:

  • Illiquidity: Many meme tokens have low volume and limited exchange listings.
  • Exit scams or soft rugs: Teams can abandon the project after price pumps.
  • Price discovery volatility: Tokens may have no clear valuation baseline and can retrace sharply.

As such, these assets are often best approached with a high-risk tolerance and clear entry/exit rules.

How to Track Meme Coins Like a Quant

Using crypto analytics platforms like Token Metrics can help make sense of meme coin volatility. Tools that help include:

  • Real-time sentiment analysis
  • Whale wallet tracking
  • Price-to-volume anomaly detection
  • Bullish/bearish signal tracking

In 2025, data is more important than hype. While memes may dominate the narrative, only data reveals when the momentum shifts.

Meme Coins vs. Infrastructure Projects

Interestingly, while meme coins have been surging, many infrastructure or protocol tokens remain flat. This divergence suggests that retail attention is still focused on short-term speculation.

That said, once Bitcoin breaks key resistance levels, we could see capital rotate into AI, DeFi, and infrastructure themes. Meme coins may be the “canary in the coal mine” indicating renewed retail appetite.

Final Thoughts

Meme coins remain the wild west of crypto—but they aren’t going away. In fact, they’re becoming more sophisticated, with deeper liquidity pools, faster launches, and increased integration with social media bots and automated token creators.

As always, meme coin trading demands discipline, skepticism, and a robust toolkit. Watch the whales, follow the data, and never trade what you don’t understand.

Research

How to Find Hidden Crypto Gems with 100x Potential (Step-by-Step Guide) | Token Metrics Moonshots

Token Metrics Team
8 min
MIN

In the fast-paced world of cryptocurrency, discovering hidden gems—often called moonshots—can lead to life-changing returns. But the real challenge lies in separating hype from actual potential. In this guide, we’ll break down what crypto moonshots are, how they work, and how you can use Token Metrics to reliably find tokens with 100x upside.

What Are Moonshot Tokens?

The term moonshot comes from the idea of a crypto token “going to the moon,” or rapidly increasing in price. These are usually low-cap tokens with a compelling narrative, innovative technology, or early-stage market presence that give them high upside potential.

Key Characteristics of Moonshot Tokens:

  • Market Cap Below $50M – Smaller market caps have more room to grow.
  • High Risk / High Reward – Volatility is expected, but the upside can be enormous.
  • Early Entry – Timing matters. Getting in early before mainstream awareness is key.
  • Backed by Fundamentals – Even moonshots need solid technology, use cases, or backing.

How Do Crypto Moonshots Work?

Moonshots rely on the combination of innovation, market timing, and community adoption. They often start unnoticed, then experience exponential growth once crypto traders and influencers catch on.

The Lifecycle of a Typical Moonshot:

  1. Discovery Phase – A few savvy investors or analysts spot the token.
  2. Accumulation Phase – Early adopters buy in quietly, keeping prices low.
  3. Breakout Phase – News spreads, and trading volume spikes.
  4. Parabolic Run – FOMO (Fear of Missing Out) kicks in, driving price up rapidly.
  5. Profit-Taking or Collapse – Smart traders exit with gains; latecomers may be left holding the bag.

To avoid the trap of hype-driven tokens, it's essential to use data and analytics, not emotions. That’s where Token Metrics becomes your secret weapon.

How to Use Token Metrics to Find Monshots?

Token Metrics is an AI-powered crypto analytics platform that helps you discover high-potential tokens with real-time data, grades, and backtested indicators. Here’s a step-by-step guide to using Token Metrics to uncover 100x opportunities:

Step 1: Go to the Ratings Page

Start from the main dashboard of the Token Metrics app.

  • Navigate to the “Ratings” tab.
  • This page ranks thousands of tokens using AI-based Trader Grade and Investor Grade, factoring in technical indicators, on-chain metrics, sentiment, and more.

Pro Tip: Look for tokens with rising Trader Grades and strong historical performance.

Step 2: Click on the “Moonshots” Tab

Once you’re in the Ratings section:

  • Click the “Moonshots” tab at the top of the page.
  • This will filter the list down to tokens the AI model flags as having moonshot potential—i.e., tokens likely to perform exceptionally well in the short term.

These are automatically generated by Token Metrics AI models using over 80+ data points, including:

  • Price momentum
  • On-chain activity
  • Sentiment analysis
  • Volume spikes
  • Market structure

Step 3: Review Key Moonshot Metrics

Each Moonshot token is presented with a rich dataset to help you make informed decisions:

  • Trader Grade (with % change in past 24h or 7d)
  • 24H Trading Volume – Gauge market interest
  • Market Cap – Lower caps typically offer more upside
  • Date of Entry – See when the token was first flagged
  • Live ROI Since Moonshot – Know exactly how past picks performed

Bonus Feature: Toggle to “Past Moonshots” to review previous winners and assess the track record of the platform.

Step 4: Choose a Token to Explore

Click on any token in the Moonshots list to open its Token Details Page.

Here, you can:

  • Analyze real-time charts
  • Review fundamentals, like project utility, tokenomics, roadmap, and team
  • See top holders and whale activity
  • Examine price volatility and volume patterns

This is where research and intuition meet. Use the available data to decide if this token fits your risk tolerance and investment thesis.

Step 5: Buy in Seconds

Token Metrics makes the process seamless:

  • Just click the “Buy” button on the Moonshots page.
  • This opens a swap widget powered by integrated DEX aggregators.
  • Choose your wallet, approve the transaction, and you're done—no need to leave the platform.

This integration eliminates the hassle of going to third-party platforms to execute trades, saving time and reducing risk.

Why Use Token Metrics for Finding Moonshots?

Token Metrics isn’t just about flashy picks—it’s about using data science and AI to gain an edge.

Key Benefits:

  • AI-Driven Insights – No emotional bias; just pure data analysis.
  • Transparency – View past moonshot performance, live ROI, and update dates.
  • Speed to Trade – Instant buy options right from the dashboard.
  • Performance Tracking – Evaluate your results based on entry/exit signals.

Real Examples: Token Metrics in Action

  • Euler Finance was flagged as a Moonshot before its 30% rally—validated by a bullish AI signal.
  • Morpho gained traction after appearing in the Moonshots list, later becoming a top TVL gainer.
  • Hyperliquid made the list before capturing major perp trading market share.

By combining early AI alerts with your own due diligence, you can position yourself ahead of the crowd.

Final Thoughts

Finding the next 100x crypto gem doesn’t have to be a guessing game. While the crypto space remains volatile, tools like Token Metrics help stack the odds in your favor. From real-time ratings to instant buy options and performance metrics, you have everything you need to make smart, data-driven bets on the future of crypto.

So if you're serious about turning small investments into big wins, start using Token Metrics to uncover moonshots before they go mainstream.

Try Token Metrics today and unlock the power of AI-driven crypto investing.

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