Audit commercial access and classify The Stall source (#678)

* Audit commercial access and classify The Stall source

* Link directly to Webb Database research index

* Keep Webb Database correction pending reachability resolution

README.md

@@ -548,6 +548,7 @@ A curated list of insanely awesome libraries, packages and resources for Quants
 - [EarningsCall](https://github.com/EarningsCall/earningscall-python) - `Python` - REST API and Python/JavaScript SDK for earnings call transcripts, audio files, and slide decks for 9,000+ public companies. Includes speaker-level data, Q&A segmentation, and earnings calendar.
 - [Korean Market Data](https://github.com/james-brand/korea-market-data) - `Data` - Daily foreign and institutional net flows for every KOSPI/KOSDAQ common stock plus all 44 KRX sector indices with returns and excess return vs market, in English CSV/JSON under CC BY 4.0 with a Zenodo DOI, rebuilt each trading day.
 - [AgentServices](https://agentservices.to) - `Python` - x402-paid crypto and market data API platform: 54 services, 97 endpoints, 37 MCP tools. Real-time prices, technical indicators, on-chain data, and market intelligence with on-chain USDC payments on Base. [GitHub](https://github.com/vbkotecha/agentservices-api)
+- [The Stall](https://github.com/thebrierfox/the-stall) - `JavaScript` `MCP` - Self-hostable data and analytics service with equity technical indicators, multi-chain portfolio valuation, market-data adapters, and MCP interfaces.
 
 
 ## Prediction Markets
@@ -726,15 +727,13 @@ A curated list of insanely awesome libraries, packages and resources for Quants
 - [KeepRule](https://keeprule.com/en) - Investment decision frameworks with a permanently free library of investor principles and scenarios covering valuation, position sizing and risk discipline.
 - [Agent Toolbelt](https://www.agenttoolbelt.live) - Stock-research and portfolio-review API with 250 free calls per month without payment information. [GitHub](https://github.com/marras0914/agent-toolbelt)
 - [ML-Quant](https://www.ml-quant.com/) - Top Quant resources like ArXiv (sanity), SSRN, RePec, Journals, Podcasts, Videos, and Blogs.
-- [RealMarketAPI](https://realmarketapi.com/en-US) - Market data API for gold, forex, cryptocurrencies, and stocks through REST, WebSocket, and MCP.
-- [Probalytics](https://probalytics.io) - Prediction market data infrastructure for Polymarket and Kalshi, with REST API, ClickHouse SQL access, 200–500M orderbook snapshots/day at 1ms resolution, and Parquet bulk exports.
-- [Sharpe](https://www.sharpe.ai/) - AI-driven crypto trading intelligence terminal for derivatives positioning, DEX flow, on-chain risk, narrative rotation, token discovery, and agent-ready market data.
+- [RealMarketAPI](https://realmarketapi.com/en-US) - Market-data service with a free REST tier of 5,000 requests per month for six symbols and M1, M5, and H1 timeframes, without a credit card.
+- [Sharpe](https://www.sharpe.ai/) - Cryptocurrency research terminal with free access without signup and a personal API tier allowing 10,000 requests per month and 30 requests per minute.
 - [Webb Database](https://webb-database.com/) - Aggregates public financial data from HKEX, the SFC, the Hong Law Society, UK Companies House and other sources, has searchable datasets on listed companies, many in machine-readable formats.
-- [GitDealFlow](https://gitdealflow.com) - Alternative-data signal platform ranking early-stage private companies by GitHub stars-per-day, hiring velocity, and package-registry adoption. Free weekly signal report, Chrome extension overlay on Crunchbase/AngelList, and MCP server on npm for LLM agent access.
-- [Clear Street API](https://docs.clearstreet.com/?utm_source=github&utm_medium=developer&utm_campaign=api_listings&utm_content=awesome_quant) - REST API for US equities & options: reference & fundamental data, multi-year financial statements, corporate events, analyst consensus, a screener, and order execution.
+- [GitDealFlow](https://gitdealflow.com) - Alternative-data research on private companies using GitHub commit velocity and contributor growth, with a permanently free weekly digest covering five startups and basic MCP read tools. [GitHub](https://github.com/kindrat86/vc-deal-flow-signal)
+- [Clear Street API](https://docs.clearstreet.com/) - REST API for US equities & options: reference & fundamental data, multi-year financial statements, corporate events, analyst consensus, a screener, and order execution.
 - [Finterm](https://finterm.xyz) - `TypeScript` - Browser-based, keyboard-first financial terminal. No public GitHub repo (closed source).
 - [Coinugget](https://coinugget.com) - Real-time RSI signals, price action, and volume spikes dashboard across multiple exchanges. Free, no sign-up required.
-- [The Stall](https://the-stall.intuitek.ai) - `JavaScript` - 277 pay-per-call tools via MCP: US stocks, crypto, DeFi analytics, Polymarket prediction markets, macro data, and sanctions screening. USDC on Base. No API key required. [GitHub](https://github.com/thebrierfox/the-stall)
 - [Stingray](https://stingray.fi/) - Trading strategy builder that turns plain-English market ideas into inspectable rules, backtests them against historical data, and monitors matching live conditions.
 - [NeuPortal](https://neuportal.ai) - AI forecasting-accountability lab: every forecast is locked pre-event, Bitcoin-timestamped (OpenTimestamps), and Brier-scored against prediction markets in public.
 - [AlphaAssay](https://alphaassay.com) - `REST` - Independent statistical assay office for trading signals and backtests: deflated Sharpe with cumulative trial accounting, probability of backtest overfitting (PBO/CPCV), leakage forensics, placebo tests against matched synthetic null worlds, and pre-registration with Merkle-anchored timestamps — deterministic, Ed25519-signed verdicts anyone can replay. Free demo; hosted API and MCP server. Methodology audit, not investment advice. [GitHub](https://github.com/alphaassay/mcp)