The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Onchain Activity Index listing page.
Computes a 0-100 quantitative DeFi Protocol Activity Index from real, public DefiLlama data (TVL trend, fee/volume activity trend, chain diversification, scale). NEXUS candidate #9 -- manual build, not FORGE-generated.
This is a pure descriptive metric -- not a trading signal, price prediction, or financial recommendation of any kind.
POST /activity-index {"protocol_slug": "uniswap"} -- charged $0.30 via x402 (Base mainnet, real USDC).get_onchain_activity_index at /mcp -- currently free.GET /health, GET /.well-known/agent-card.json, GET /openapi.json (has x-payment-info).Live: https://onchain-activity-index-325572559480.us-central1.run.app
Originally built and measured on Base Sepolia testnet. Cut over to Base mainnet: x402 settlement moved to
the CDP facilitator (create_facilitator_config(), same swap already applied to
ws/live-entity-verification/erc8004-agent-liveness), and the payto wallet moved to
NEXUS_X402_PAYTO_ADDRESS (fail-fast env var, no placeholder default, renamed from
X402_WALLET_ADDRESS). CDP_API_KEY_ID/CDP_API_KEY_SECRET and NEXUS_X402_PAYTO_ADDRESS must be set
in Cloud Run before this deploys.
Full source, methodology, and quality-gate history: see the private NEXUS monorepo
(manual_assets/onchain-activity-index/). This repo exists to satisfy MCP Registry namespace
ownership verification (io.github.nexus-mcp-infra/onchain-activity-index) and as the public
landing page for the deployed service.
A free, MIT-licensed companion skill (client usage guide, no payment required to read/use) lives at nexus-mcp-infra/onchain-activity-skill.