From d1e0ec900642be6c79aea1fe954a82adb4356eba Mon Sep 17 00:00:00 2001
From: Flotapponnier <160007691+Flotapponnier@users.noreply.github.com>
Date: Mon, 17 Aug 2026 13:20:28 +0200
Subject: [PATCH] Add OpenChainBench to Market Data & Data Sources (#556)

* Add OpenChainBench

* add Go/TypeScript tags and GitHub link per review
---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 6700cd3..fc853dc 100644
--- a/README.md
+++ b/README.md
@@ -425,6 +425,7 @@ A curated list of insanely awesome libraries, packages and resources for Quants
 - [commitments-of-traders](https://github.com/moshejs/commitments-of-traders) - `TypeScript` - Client for the CFTC Commitments of Traders reports (Legacy, Disaggregated, TFF; futures-only and combined) via the official Socrata API.
 - [coinpaprika-api-python-client](https://github.com/coinpaprika/coinpaprika-api-python-client) - `Python` - Free crypto market data API client. 12,000+ coins, 350+ exchanges, tickers, OHLCV, historical prices. No API key for free tier.
 - [FillBench](https://fillbench.com) - Reproducible crypto exchange REST API latency benchmarks (p50/p95/p99 and TLS connect time) measured every 2 hours from a fixed US East server. Raw data: [GitHub](https://github.com/sircharli3/fillbench-data).
+- [OpenChainBench](https://openchainbench.com) - `Go` `TypeScript` - Continuous open-source benchmarks for blockchain RPC latency (22 EVM chains + Solana), perp DEX all-in cost (fees + funding), bridge quote fees, and oracle deviation across Chainlink/Pyth/Redstone. MIT licensed, no API key. [GitHub](https://github.com/ChainBench/OpenChainBench)
 - [defeatbeta-api](https://github.com/defeat-beta/defeatbeta-api) - `Python` - An open-source alternative to Yahoo Finance's market data APIs with higher reliability.
 - [financekit-mcp](https://github.com/vdalhambra/financekit-mcp) - `Python` - MCP server (Model Context Protocol) exposing 17 tools for AI agents to perform quantitative analysis: real-time stock quotes, full technical analysis (RSI, MACD, Bollinger, ADX, Stochastic, ATR, OBV + pattern detection with structured verdicts), crypto prices via CoinGecko, risk metrics (VaR, Sharpe, Sortino, Beta, Max Drawdown), correlation matrix, options chains, earnings calendar, sector rotation, and portfolio analysis. Works with Claude Desktop, Cursor, Windsurf. No API keys for core tools. FastMCP 3.2.
 - [dexpaprika-sdk-python](https://github.com/coinpaprika/dexpaprika-sdk-python) - `Python` - Free DEX data API client. 36 blockchains, 36M+ pools, 33M+ tokens, real-time SSE streaming, OHLCV. No API key needed.