Analyzing On-Chain Data Overview Analyze DeFi protocol metrics, chain-level TVL, fee revenue, DEX volumes, yield opportunities, and stablecoin market caps using DeFiLlama as the primary data source. Designed for DeFi researchers, protocol analysts, and yield farmers who need programmatic access to on-chain analytics without writing custom subgraph queries. Prerequisites Python 3.8+ with requests library installed DeFiLlama API access (free, no key required for most endpoints) Optional: CoinGecko API key for supplementary token price data onchain_analytics.py CLI script available in the plugin directory data_fetcher.py and metrics_calculator.py modules for programmatic usage Instructions Run python onchain_analytics.py protocols to retrieve the top DeFi protocols ranked by total value locked (TVL). Filter protocol results by category using --category lending , --category dex , or --category "liquid staking" to narrow the scope. Filter by chain with --chain ethereum or --chain arbitrum to isolate chain-specific protocol data. Sort results by alternative metrics using --sort market_share or --sort tvl_to_mcap to surface undervalued protocols. Run python onchain_analytics.py chains to retrieve chain-level TVL rankings across all tracked networks. Run python onchain_analytics.py fees --protocol aave to pull fee and revenue data for a specific protocol. Run python onchain_analytics.py dex --chain ethereum to analyze DEX trading volumes filtered by chain. Run python onchain_analytics.py yields --min-tvl 5000000 --chain ethereum to identify yield opportunities above a minimum TVL threshold. Run python onchain_analytics.py trends --threshold 5 to detect protocols with significant TVL changes (threshold is percentage). Export results in JSON or CSV format using --format json or --format csv and redirect to file for downstream analysis. See ${CLAUDE_SKILL_DIR}/references/implementation.md for the full four-step implementation workflow. Output Protocol rankings table with name, TVL, market share percentage, and TVL-to-market-cap ratio Chain TVL rankings showing aggregate locked value per network Fee and revenue reports per protocol with daily/weekly/monthly breakdowns DEX volume tables with per-chain and per-DEX breakdowns Yield opportunity listings filtered by minimum TVL and chain, including APY and pool details Trending protocol alerts showing TVL percentage changes above the configured threshold Stablecoin market cap summaries JSON ( output.json ) or CSV ( output.csv ) export files for programmatic consumption Error Handling Error Cause Solution Request timeout DeFiLlama API slow or unreachable Wait and retry; check https://status.llama.fi/ for outages; use cached data if available Protocol not found: invalid-name Protocol slug does not match DeFiLlama database Run python onchain_analytics.py protocols to find the exact slug; slugs are case-sensitive No data returned for query Filter too restrictive or data unavailable Remove filters and retry; verify the category or chain exists; try a broader time range TVL data unavailable for some protocols New protocols or data collection gaps Check DeFiLlama directly; data typically appears within 24 hours of listing Data may be stale (last updated: X hours ago) Local cache not refreshed Clear cache with rm ~/.onchain_analytics_cache.json ; use --verbose to check cache status Showing top 50 of 1000+ protocols Output truncated for readability Use --limit to increase count or --format json for full untruncated data UnicodeEncodeError Terminal encoding mismatch Use --format json for safe output or set LANG=en_US.UTF-8 Examples Daily DeFi Overview python onchain_analytics.py protocols --limit 20 python onchain_analytics.py chains python onchain_analytics.py trends Produces a snapshot of the top 20 protocols by TVL, all chain rankings, and any protocols trending above the default threshold. Research a Lending Protocol python onchain_analytics.py protocols --category lending --sort tvl_to_mcap python onchain_analytics.py fees --protocol aave Ranks all lending protocols by TVL-to-market-cap ratio (identifying potentially undervalued protocols), then pulls detailed fee and revenue data for Aave. Find High-TVL Yield Opportunities on Ethereum python onchain_analytics.py yields --min-tvl 10000000 --chain ethereum --limit 50

10000000 = 10M limit

Returns up to 50 yield pools on Ethereum with at least $10M in TVL, sorted by APY. Export with --format csv > yields.csv for spreadsheet analysis. Resources DeFiLlama API Documentation -- primary data source for TVL, fees, yields, and DEX volumes DeFiLlama Status Page -- check API availability and outage reports CoinGecko API -- supplementary token price and market cap data Dune Analytics -- custom SQL queries against on-chain data for deeper analysis The Graph -- decentralized indexing protocol for querying blockchain data via GraphQL