Onchain Activity Index

DeFi Protocol Activity Index -- quantitative on-chain activity metric from DefiLlama data

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

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Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "onchain-activity-index": {
      "command": "npx",
      "args": [
        "-y",
        "onchain-activity-index"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

On-Chain Activity Index

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).
MCP tool 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

Mainnet cutover (2026-09-03)

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.

Read the full README →View source on GitHub →

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Frequently Asked Questions about Onchain Activity Index

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "onchain-activity-index": { "command": "npx", "args": ["-y", "onchain-activity-index"] } }

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Technical Specs & Signals

CategoryFinance & Fintech

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

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