Solana RPCs Face Scaling Issues, Substreams Offers Solution

**The Graph's Subgraph Gateways now support x402 payments**, enabling pay-per-query access using USDC on Base. **Key features:** - Query blockchain data across dozens of networks without API keys or accounts - Payment serves as authentication in a single HTTP round trip - Client receives 402 response with price, signs USDC payment, retries and receives data - Existing API-key access remains unchanged **Technical implementation:** - x402 endpoints available at `/api/x402/...` - Compatible clients can install via `npm install @graphprotocol/client-x402` - Works on Base mainnet and Base Sepolia testnet This payment model is particularly useful for AI agents and applications needing on-chain data like DEX activity, positions, governance, or protocol metrics without managing authentication infrastructure. [Read the documentation](https://thegraph.com/docs/en/subgraphs/guides/x402-payments/)

**Agent0 Subgraphs are now live** across Base, BNB Chain, Ethereum, Monad, and Polygon, providing real-time indexing for ERC-8004 agents. **What's being indexed:** - Agent identity and capabilities - Reputation scores and validation data - Cross-chain agent activity **Key features:** - Single GraphQL query replaces complex RPC calls - Millisecond response times across all five chains - Already processed over 1M queries - Built as a public good with The Graph Protocol **Practical applications:** - Agent marketplaces and discovery - Real-time reputation dashboards - Cross-chain analytics - Agent-to-agent interactions Developers can now access comprehensive agent data without building custom indexers. The unified schema works across all supported chains with a simple parameter change. [Explore Agent0 Subgraphs](https://thegraph.com/explorer?search=agent0) | [Read the docs](https://thegraph.com/docs/en/subgraphs/guides/agent0/)

**The Graph Protocol** has released a dedicated x402 package (`@graphprotocol/client-x402`) offering developers three integration methods: - **CLI one-liner** for quick implementation - **Programmatic API** for flexible integration - **Typed SDK** with complete type safety The package supports **USDC payments** on Base and Base Sepolia networks. Developers can install via npm and access full documentation at thegraph.com/docs. [Install package](https://www.npmjs.com/package/@graphprotocol/client-x402)

**The Graph Network is removing a major friction point for developers.** Previously, accessing Subgraph data required a Subgraph Studio account and API key - a setup that worked fine for traditional apps but created barriers for: - Autonomous agents - Serverless functions - Ephemeral workloads that spin up and down This change makes The Graph more accessible for modern, dynamic infrastructure patterns without requiring persistent credentials.

**Agent0 Subgraphs are now operational across five major blockchain networks** - Base, BNB Chain, Ethereum, Monad, and Polygon - using a single GraphQL schema. **Key features:** - Real-time indexing of every ERC-8004 agent across all chains - No code rewrites needed when switching between networks - Already processed over 1 million queries - Accessible via [Graph Explorer](https://thegraph.com/explorer?search=agent0) **What this enables:** - Developers can query agent data with a single GraphQL request instead of scanning thousands of blocks - AI agents can discover, hire, and interact with each other using structured blockchain data - Machine-scale data access for agents that operate continuously The infrastructure indexes agent identities, capabilities, reputation, and validation data in milliseconds. Developers building ERC-8004 agents can now access comprehensive onchain data without building custom indexers.