Best Blockchain APIs for Developers in 2026: Expert Review

Every crypto product relies on a blockchain API. A wallet that displays a balance calls one. A trading bot calls two or three. An AI agent that responds to << what does this wallet contain >> calls one via MCP. Four layers do this work. Node providers expose the raw state of the chain via RPC. Indexers transform raw logs into queryable tables. Data APIs return priced, decoded values ready for display. Exchange rails move assets between chains and platforms. Most production stacks combine at least two of the four.

This review ranks ten providers across these layers. CoinStats API leads the data layer that corresponds to most crypto use cases. Chainstack, StealthEX, Codex, The Graph, Covalent GoldRush, Tatum, Blockchair, Jupiter API, and Ankr follow. Each excels in its domain. Each figure below has been verified with the official documentation from October 2026. The ultimate guide for developers and AI agents from Cointribune ranks generalist data providers. The EVM and Solana infrastructure guide addresses node access. This list is the full-stack view.

Quick Verdict

• Overall Winner: CoinStats API
• Managed RPC and Streaming: Chainstack
• Non-custodial Exchange Rails: StealthEX
• Real-time Data on Tokens and Predictive Markets: Codex
• Custom Indexing: The Graph
• Decoded Multi-chain History: Covalent GoldRush
• Multi-chain Data plus RPC with a Single Key: Tatum
• Bitcoin Explorer and UTXO Data: Blockchair
• Swaps and Solana Token Data: Jupiter API
• Cheapest RPC with Indexed Extras: Ankr

CoinStats API takes the top spot for a reason. A key returns market data, wallets, DeFi, portfolio analytics, and risk checks on tokens. The other nine are specialists. A node provider cannot price a wallet. A data API cannot sign a transaction. The stack needs both, and this review shows where each fits in.

Benchmark: Ten APIs Across Six Axes

Scores range from 1 to 5. They reflect the reading of the public documentation from October 2026, not vendor claims. Coverage rewards breadth and non-EVM reach. Depth rewards decoded and priced outputs. Real-time values fast delivery. The free tier rewards what a developer can deploy for free. Predictability values linear billing. AI readiness rewards native MCP servers and payments to agents.

The forms tell the story faster than the totals. CoinStats API and The Graph fill the chart evenly. Chainstack excels in real-time and predictability but dives in depth. This is correct for a node provider. Codex excels in real-time and AI preparation. StealthEX and Blockchair only shine in predictability. Jupiter API is a single-chain specialist with a complete agent toolkit.

What this review compares (and why it matters)

Developer demand for blockchain data continues to grow despite workforce movements. Electric Capital's Developer Report recorded 26,772 active crypto developers monthly as of mid-October 2026. Ethereum added 16,181 new developers between January and September 2025, according to the same dataset. Solana added 11,534. These developers are deploying on more chains than ever. L2BEAT tracks 97 Ethereum Layer 2 projects securing $32.34 billion. a16z crypto's State of Crypto 2025 indicates an aggregated throughput of 3,400 transactions per second. This is a 100-fold increase over five years. Each of these transactions goes through an API before reaching a screen.

<< 1/ New data confirms: @Ethereum is the #1 ecosystem for new developers in 2025. >> Ethereum Foundation (@ethereumfndn) on X, October 15, 2025. See the post

Six criteria determine the ranking. Each corresponds to an axis of the benchmark chart above.

Chain Coverage. How many networks a single key reaches. If Bitcoin and Solana are alongside EVM chains. Vendor figures are cited as published, with the enumerated list cited if it differs.

Data Depth. Raw hex from a node. Decoded transfers from an indexer. Priced balances from a data API. The deeper the layer, the less code a team writes.

Real-time Delivery. WebSocket push, gRPC, or webhook versus REST polling. Bots and agents feel this difference first.

Free Tier. What the zero-dollar plan really allows, in credits, requests, or rate limits.

Price Predictability. If the bill for a month can be predicted based on the number of requests. Credit multipliers and plan jumps reduce the score.

AI Preparation. Native MCP servers, agent payments, and machine-readable docs. The 2025 Postman report on the state of the API surveyed 5,700 developers about agents. 24% are already designing APIs with AI agents in mind. Only 10% use MCP regularly today. The providers below are ahead of this curve.

No provider wins in all contexts. Teams combine two or three. This review goes further and specifies which ones.

The same wallet address returns four different responses, one per layer. This difference guides all the tables and graphs below.

Head-to-Head Comparison Table

Three trends emerge. Only CoinStats API returns decoded DeFi positions by wallet. Chainstack, Ankr, and Tatum provide raw access to nodes. Chainstack and Ankr also broadcast chain state at the RPC level. Only StealthEX and Jupiter API move assets. Everything else reads.

Price Breakdown: What You Really Pay

The displayed prices are misleading at this level. The unit matters more than the plan name.

Two providers dominate the cost per call for data. CoinStats API prices a basic market call at 1 or 2 credits. In Starter, this is around $0.05 for 1,000 calls. Ankr prices an EVM RPC call at about $0.02 for 1,000. These figures are not comparable. One returns a priced balance, the other a raw hex. This gap advocates for coupling layers rather than choosing just one.

Best Blockchain API According to Use

Portfolio Tracking and Wallet Applications

Start with CoinStats API. A key returns balances, transactions, DeFi positions, and P&L across 120+ chains. Add Covalent GoldRush for deeper decoded history on EVM chains for tax tools. Add Blockchair for Bitcoin xpub dashboards requiring chain detail.

Trading Bots and Terminals

Codex for token pricing in one second, OHLCV, and holder data across 80+ networks. CoinStats API for portfolio context and token risk control before trading. Chainstack for submitting transactions and streaming Solana state via Yellowstone gRPC. Jupiter API when the platform is Solana. The API guide for trading bots and AI agents from Cointribune covers the exchange side.

AI Agents and MCP Workflows

CoinStats MCP server provides an agent wallet, DeFi, and market tools in one place. Codex adds real-time token flows and predictive market plus payments by call. The Graph allows an agent to query subgraphs directly. Jupiter API lets an agent trade on Solana without keys. Ankr's MCP RPC agent covers raw reads with compact output.

Custom Indexing and Protocol Dashboards

The Graph dominates this segment. Subgraphs and Substreams produce a schema tailored to a protocol. Chainstack or Ankr provide the RPC archive that indexers read.

Swaps and Payment Flows

StealthEX for non-custodial conversion on 2,000+ assets without a user account. Jupiter API for native Solana routing. The swap comparisons GetBlock and Chainstack listed above help choose the platform.

Bitcoin Products and UTXO

Blockchair for explorer dashboards, SQL-style queries, and xpub views. CoinStats API for Bitcoin balances priced with everything else in the portfolio. Chainstack for Bitcoin RPC when a product issues its own transactions.

Low-Budget Multi-Chain Infrastructure

Ankr for broad and cheap RPC with extras indexed on EVM. Tatum when a JavaScript SDK needs to cover RPC, data, notifications, and wallets. Chainstack when predictable billing and compliance matter more than low unit price.

The Contenders

1. CoinStats API

CoinStats crypto API is the data layer of this stack. A key returns market data, wallets, DeFi, analytics, and token risk control. The same REST surface covers 100,000+ coins, 200+ exchanges, and 120+ blockchains. DeFi positions resolve by wallet across 10,000+ protocols. Price history goes back ten years.

Portfolio coverage is beyond the reach of node providers. EVM chains, Solana, and Bitcoin behind the same family of endpoints. Bitcoin support includes xpub, ypub, zpub keys, thus HD wallets resolved automatically. Exchange accounts synchronized via this same schema, including Binance, Coinbase, Hyperliquid. A portfolio tracker, tax tool, or AI assistant gets a form of unified data. Live responses arrive in 100 to 200 milliseconds.

Agents have two accesses. CoinStats MCP server delivers 20+ crypto tools on one URL. Claude, Cursor, Claude Code, VS Code, and N8N connect. The x402 option adds pay-per-request access with USDC from a Base wallet. No account or API key required. Token Risks endpoint checks contracts before trading. Flags detect honeypots, hidden fees, upgradable proxies. These checks protect 1M monthly users of CoinStats.

Pricing is in credits. Free tier 20,000 credits per month at 2 requests/second. Starter costs $49/month for 1M credits at 30 req/s. Market calls cost 1 to 2 credits. Wallet calls cost more with published multipliers. A guide to the best blockchain APIs details endpoints and costs.

Where it fits: Ideal for crypto products needing market data, wallet balances, DeFi positions, analytics, and token security. Portfolio tracking, bots, tax tools, AI agents start here.

Where it doesn't fit: Raw node access and transaction broadcasting. Swap execution via rails like StealthEX. Streaming sub-second long-tail DEX belongs to Codex.

2. Chainstack

Chainstack manages the node layer. The managed RPC covers 70+ chains, including Ethereum, Solana, and Bitcoin. Access is via JSON-RPC and WebSocket. Solana, TRON, and Sui add gRPC, while Sui adds GraphQL. The Global Node routes requests to the nearest healthy region. Failover occurs if a node is behind by more than 40 blocks. Dedicated and self-hosted nodes ensure isolation. The platform handles over 10 billion API calls per day across 10+ data centers. Uptime exceeds 99.99%. Clients include Trust Wallet, Circle, and TradingView.

Billing is based on request units, the main reason for the ranking here. A full-node call costs 1 unit. An archive call costs 2 units. The free Developer plan provides 3 million units per month. 25 requests per second, never expired. Growth to $49/month for 20 million units at 250 req/s. Archive, Debug, and Trace APIs unlock at this tier. Pro at $199, Business at $499, and Enterprise starting at $990. Dedicated nodes are billed hourly on Pro+. Unlimited nodes are available for a flat fee starting at $149/month without a counter. Monthly billing is predictable based on the number of requests, which is rare at this level.

Solana trading teams have dedicated tools. Trader Nodes add Warp transactions via bloXroute at $0.15 each. Streaming gRPC Yellowstone extracts live data from validator memory. Starting at $49/month for two streams. Requires Growth plan or higher. Full compliance for an RPC vendor. SOC 2 Type II obtained by December 2025, ISO 27001 by July 2026. MCP server on all plans, including free. Deploys/manages nodes, seeks documentation, requests testnet funds. Chainstack also publishes a comparison of eight crypto swap exchanges. Assists in the node-execution interface.

Where it fits: Bots reading raw chain state, streaming events, submitting transactions. Multi-chain teams wanting predictable request unit billing and compliance.

Where it doesn't fit: Responses for raw chain state. Decoding and pricing on the client side. Archive calls billed double. MCP server manages infrastructure, not chain data.

3. StealthEX

StealthEX is the execution rail here. Instant non-custodial exchange with REST API for swaps. The v4 API integrates crypto-to-crypto swaps across 2,000+ assets. End users do not have accounts; StealthEX does not hold funds. Liquidity from Binance, KuCoin, Bybit, MEXC. Settlement in 5 to 30 minutes.

Quotations in three modes. Floating rates follow the live market. Fixed rates lock in the amount received. Inverted quotes start from the recipient amount, suitable for payments. No systematic KYC. Identity checks for blacklisted wallets or suspicious transactions. Limit of 600 requests/min, optional signed responses. No-code widget integrates in 5 minutes, with embedded links and buttons.

Business model favored by wallets. Free integration, no subscription or paid plan. Standard fee of 0.4% included in each quote. Partners add commission, earning on each swap. 24/7 support. GetBlock comparison of eight swap exchanges positions instant services against DEX and CEX. Axes: custody, fees, chain coverage.

Where it fits: Wallets, bots, payment flows moving assets, not just prices. Teams wanting swap revenue without custody or KYC.

Where it doesn't fit: Execution only, without market data or analysis. Settlement in minutes, not milliseconds; arbitrages sensitive to latency elsewhere. To be combined with CoinStats API for prices and balances.

4. Codex

Codex is an enriched blockchain data API built on two pillars: tokens and predictive markets. One API delivers real-time token prices, OHLCV, holder analysis, and wallet balances. Coverage includes 90M+ tokens and 80+ networks. EVM and Solana chains are integrated. The same API covers predictive market events, odds, trader analysis, and order books on Polymarket and Kalshi.

Freshness is essential. Data is delivered with a second of freshness via WebSocket subscriptions, 99.9% uptime. Webhooks and GraphQL API complement the transport. Integrated enrichment. USD pricing, OHLCV candles, analytics holders, aggregated volume, ready token metadata. No indexing pipeline to maintain. New tokens indexed upon arrival on-chain. Long-tail coverage tracked.

High-end agent tools. TypeScript SDK @codex-data/sdk. MCP server documentation and Codex Skills equip agents. Agent payments MPP at $0.001 per request. No account, API key, or billing setup required. TradingView, Coinbase, MoonPay, Uniswap, Pump.fun use Codex. Free tier 10,000 requests/month full access. Growth $350/month for 1M requests, WebSocket, webhooks.

Where it fits: Trading bots and terminals, token scanners, charting tools, predictive market products. AI agents need structured crypto quickly.

Where it doesn’t fit: Bitcoin, centralized exchange balances, DeFi position decoders. This is in the CoinStats API zone, the two complement each other.

5. The Graph

The Graph is the indexing layer. Subgraphs transform contract events into queryable GraphQL schema front-end. Substreams push even data to Postgres, ClickHouse, MongoDB. A Token API, managed by Pinax and built with The Graph, provides ready-to-use REST endpoints. Balances, transfers, holders, prices, DEX swaps across ten networks. Marketing site lists 60+ supported networks. Documentation table counts 136 lines including testnets.

Simple economy. Free plan 100,000 requests/month plus test environment Studio. Growth plan bills $2 per next 100,000 requests. Payment in GRT or card. Token API has its own tiers. Free 200 req/min, paid increases it. Important change in 2026: Studio staging endpoints began to be retired in October 2026, with BNB and Polygon prioritized. Production traffic now requires published subgraph, billing, and Gateway key.

Strong AI preparation. MCP Subgraph allows agents to find subgraphs, read schemas, execute queries. Pinax delivers a separate MCP server for Token API data. The Graph post supporting this approach is worth quoting.

<< Blockchains are transparent but unreadable. AI is great at reasoning but needs data. MCP bridges the gap. >> The Graph (@graphprotocol) on X, March 20, 2026. See the post

Where it fits: Teams wanting a custom data model on raw chains. Protocol dashboards, DeFi frontends, agents querying subgraphs via MCP.

Where it doesn’t fit: No unified wallet access point. Each subgraph has its own schema, and Token API covers ten chains. Wallet views still require a data API above.

6. Covalent GoldRush

Covalent GoldRush returns decoded multi-chain wallet history. Foundational API covers balances, transaction history with decoded logs, NFTs, token prices, DEX pool prices, and approvals. Bitcoin included alongside EVM. Streaming on Hyperliquid and Solana. The provider cites 100+ chains including Solana and Bitcoin. The public chains page lists 45 active mainnets and 18 testnets, so cite the smallest for contract.

Low initial rates and big climb. 14-day trial includes 25,000 credits at 4 req/s. No card required. Vibe Coding plan $10/month for 10,000 credits. Rate remains at 4/second. Professional $250/month for 300,000 credits at 50 req/s. Each endpoint costs credits based on returned data. Calculation is necessary for $10/month.

Fast agent support in 2026. GoldRush MCP server hosted exposes 50+ tools without installation. Option x402, still on Base Sepolia testnet, allows payment by call. Agent skills emerged in 2026.

Where it fits: Wallet and tax apps needing decoded multi-chain balances and history. EVM chains plus Bitcoin.

Where It Doesn't Fit: No DeFi positions endpoint, only classified DEX prices and swaps. Solana lacks a complete historical transaction record. The rise from $10 to $250/month is tough for a growing app.

7. Tatum

Tatum combines three things under one key. The data API covers wallets, transactions, prices, staking, security, DeFi events, tokens, fee estimation, and naming services. The RPC gateway routes calls across 130+ blockchains with failover. Notification service and MPC wallet SDK complete the offering. Official SDKs are available in JavaScript/TypeScript. The blockchain page lists 67 protocols across three tiers. Data API coverage is more limited than RPC.

Credits measure everything. The free plan offers 100,000 lifetime credits, 3 req/s. Two API keys are included. The starter plan is $49/month for 4M credits. Annual plan is $29/month. A standard RPC call costs 2 credits. Debugging or tracing costs 50. Data API calls cost more, with rates published by endpoint. Credits do not roll over; exhaustion requires upgrading tiers.

AI tools are present but compact. The server @tatumio/blockchain-mcp exposes 13 tools. Ten for data, three for the RPC gateway. MCP documentation is hosted at docs.tatum.io/mcp.

Where It Fits: Fintechs wanting RPC, data, notifications, and MPC wallets together. One vendor and one JavaScript SDK cover everything.

Where It Doesn't Fit: The 100,000 free credits burn quickly and do not replenish. Data calls cost more than RPC. Data API coverage is more limited than 130+ RPC.

8. Blockchair

Blockchair is an API-grade explorer for Bitcoin-family chains. It exposes dashboards for blocks, transactions, addresses, and xpub keys. The raw endpoints family returns node data. << Infinitables >> SQL-style filters allow for filtering, sorting, and aggregating across entire chains. Stats, broadcasting, and mempool endpoints complete the set. The API page lists 14 blockchains. Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, Groestlcoin, Zcash, and eCash dominate the UTXO set. Ethereum, Ripple, Stellar, Monero, and Cardano follow.

Pricing is the most predictable here. Usage without a key allows for 1,000 requests/day. The hard limit is 30/min. Pay-per-use is $1 per 1,000 calls. A $10 pack for 10,000 calls is valid for one year. Specialized plans start at $25/month for 1,250 calls/day. Enterprise plans start at $250/month for 25,000 calls/day. There is no MCP server or AI agent product.

Where It Fits: Bitcoin wallets, UTXO research, compliance tools. Everything requiring xpub dashboards and SQL queries across chains.

Where It Doesn't Fit: The API ignores explored Layer 2 EVMs. Documentation lags behind live service. Blockchair directs developers to API v3 at 3xpl.com. Daily caps block the key until the next day.

9. Jupiter API

Jupiter API specializes in Solana. The Swap API V2 returns routed orders and executes them via a pair of endpoints. Price API, Tokens API, and Trigger API for limit orders, OCO, DCA alongside. Lend and Prediction Market APIs appeared in 2026, some still in beta. The developer platform launched in April 2026 with tiers and billing via Stripe or USDC.

A real but slow free tier. Access without a key is 0.5 req/s. A free key allows 1 req/s with no credit limit. Developer plan is $25/month for 10 req/s and 25M credits. Launch is $100, Pro is $500. Execution calls cost 0 credits, most endpoints cost 1. Meta-Aggregator orders charge 0 to 10 basis points depending on the pair. Tokens < 24h pay 50 basis points.

Surprising AI readiness. The trading MCP hosted at mcp.jup.ag exposes 72 tools. They cover swaps, tokens, prices, triggers, lending, and predictive markets. They return unsigned transactions, keys remain in the agent wallet. MCP, CLI, and Agent Skills documentation complete the offering.

Where It Fits: Swap execution, limit orders, DCA Solana in app or agent. Searching for tokens and Solana prices without an indexer.

Where It Doesn't Fit: Solana only, no EVM. Jupiter takes a share of referral fees from integrators. The keyless tier is too slow for production.

10. Ankr

Ankr is a large and affordable RPC option. The node API serves JSON-RPC, HTTPS, WebSocket, gRPC across 70+ chains. The Advanced API adds indexed methods on 17 EVM mainnets: account balances, token prices, holders, transfers, logs. Ankr reports 1 trillion RPC requests served per month by September 2025.

Generous free tier. Public endpoints without keys. About 1,800 requests/min on 30+ chains. Freemium account adds 200M credits/month. Advanced API 50 req/min. Hourly payment starts at a $10 deposit. One million credits cost $0.10. EVM RPC call costs 200 credits, or $20 for 1M calls. Solana calls cost 500 credits, Advanced calls 700. Failed requests are charged.

Agent tools arrived in July 2026. The MCP RPC agent exposes 25 read-only tools with compact decoded output. Keyless option charges $0.001 per call in USDC. MCP management handles projects and keys.

Where it fits: Multi-chain EVM apps wanting affordable RPC with more indexed token data. A system credit balance covers both.

Where it doesn’t fit: Advanced EVM API only. Log requests limited to 100 blocks. Free tiers lack tracing, debugging, or WebSocket.

The Hidden Costs Most Developers Miss

Self-Built Enrichment

A raw RPC call returns a balance in hex. An amount in USD requires a price feed, decimal search, token list. Transforming a transaction into a DeFi position requires specific protocol decoding. DefiLlama counted $4.91 trillion in DEX spot volume for 2025, +91% year-on-year. Most volume passes through contracts that a generic decoder does not understand. A data API absorbs this work. A node provider sends it back raw.

Latency Not Visible in Pricing

A REST poll per second creates 86,400 calls per day per stream. A WebSocket connection costs a connection. Codex and Chainstack push by default. CoinStats API and GoldRush wait for polling at the data layer. This difference decides the bill before choosing a plan.

Running Three Providers When One Suffices

Each provider adds key, billing, limits, and status page. Chainalysis measured $9.4 trillion in on-chain economic activity up to June 2026. This figure is in its Global Crypto Adoption Index 2026. Teams capturing this activity consolidate as much as possible. A data API combined with an RPC provider covers most products. Add a swap rail only if the product moves assets.

Free Tiers Blocking Necessary Access Points

A generous number of requests is useless if the access point is paid. Tatum's 100,000 free credits never replenish. The GoldRush trial expires in 14 days. Chainstack reserves Yellowstone gRPC for the Growth+ plan. CoinStats API prices wallet calls higher than markets on every plan. Read the credit table before looking at the main figure.

AI Agents Changing the Query Schema

Agents do not poll. They question, reason, and re-question. MCP has become standard to allow them to do this. Anthropic gave the protocol to the Linux Foundation in December 2025. Over 10,000 active public MCP servers and 97 million monthly SDK downloads.

<< Anthropic gives the Model Context Protocol to the Agentic AI Foundation, a fund led under the Linux Foundation. Within a year, MCP has become a foundational protocol for agentic AI. Joining AAIF ensures that MCP remains open and community-driven. >> Anthropic (@AnthropicAI) on X, December 9, 2025. See the post

Eight of the ten providers here deliver some sort of MCP server. CoinStats API, Codex, and Ankr also allow payment per call without an account. The next hidden cost is an adapter written for a provider without one.

Conclusion

Ask which blockchain API a developer should choose in 2026. The answer is CoinStats API. It covers most crypto use cases, from portfolio tracking to AI agents. One key, one schema. Broad coverage, decoded DeFi positions, token risk controls, native MCP server. It is the first and smoothest integration.

The other nine are no less good. They are specialized. Chainstack for predictable node access. StealthEX for frictionless swaps. Codex for tokens and predictive market in a second. The Graph for custom indexing. GoldRush for decoded history. Tatum for all-in-one SDK. Blockchair for Bitcoin explorer data. Jupiter API for Solana execution. Ankr for broad and cheap RPC.

The decision is not which API is the best overall, but which layer is missing from the product. Most stacks require a data API and a node provider. Some need a swap rail. Start with the missing layer, and the selection will make itself.

FAQ

What is a blockchain API? A blockchain API is a hosted service that reads or writes chain data. Transport occurs via HTTP, WebSocket, or gRPC. Node providers expose raw state. Indexers and data APIs return decoded and queryable values. Exchange APIs move assets between chains and platforms. What is the best blockchain API for developers in 2026? CoinStats API for most products. One key covers market data, wallets, DeFi, portfolio analytics, and token risk control. Coverage exceeds 120 chains. Pair it with Chainstack or Ankr for raw node access when needed. Is there a free blockchain API? Yes. Each provider here offers a free entry point. CoinStats API gives 20,000 credits per month. Chainstack grants 3 million request units. The Graph offers 100,000 queries. Ankr delivers 200 million credits. Blockchair allows 1,000 calls per day without a key. What is the difference between an RPC provider and a data API? An RPC provider relays calls to a blockchain node and returns raw state. A data API indexes, decodes, and prices that state before returning it. Chainstack and Ankr are RPC providers. CoinStats API, Codex, and GoldRush are data APIs. Do blockchain APIs support AI agents? Most do now via MCP. CoinStats API, Codex, The Graph, GoldRush, Tatum, Jupiter API, and Ankr offer MCP servers. Chainstack's MCP manages nodes rather than chain data. StealthEX and Blockchair do not have them. Which API covers Bitcoin? CoinStats API prices Bitcoin balances, including xpub, ypub, and zpub keys. Blockchair exposes Bitcoin data at the explorer level with SQL-style queries. Chainstack and GoldRush include Bitcoin in their chain lists. Codex and Jupiter API do not cover Bitcoin. Which API is best for Solana? Jupiter API for swaps, prices, and token data on Solana. Chainstack for Solana RPC and streaming gRPC Yellowstone. CoinStats API and Codex cover Solana in a multi-chain schema. Can an API handle data and execution? Rarely, and keeping them separate is safer. A data API never touches trading keys. StealthEX and Jupiter API handle execution. CoinStats API, Codex, and The Graph handle data. Most production stacks combine one of each. How are blockchain APIs priced? Credits, request units, queries, or a share of trading volume. CoinStats API and Tatum measure credits varying by endpoint. Chainstack measures request units. The Graph charges based on queries. StealthEX earns on a 0.4% commission in each swap quote.