On-Chain Activity Index

Gold402 Verified. Hand-reviewed and on the curated list — curation is the bar. The stamp means a human read this entry and the endpoint answered when we knocked. It is not a delivery test: we have not paid this service and graded what came back, so treat it as "reachable and speaks the protocol," never as "this is worth the money."

0-100 quantitative DeFi Protocol Activity Index computed from real public DefiLlama data (TVL trend, fee/volume activity trend, chain diversification); explicitly a descriptive index, not trading advice. $0.30 USDC on Base Sepolia (testnet) via x402. Example: `POST /activity-index {"protocol_slug":"uniswap"}`. ([OpenAPI](https://onchain-activity-index-325572559480.us-central1.run.app/openapi.json)) ([Agent Card](https://onchain-activity-index-325572559480.us-central1.run.app/.well-known/agent-card.json)) ([GitHub](https://github.com/nexus-mcp-infra/onchain-activity-index))