Baseline, made by A5 Labs Limited in London, is a stock research tool that has already scored more than 3,600 listed companies on 35 qualitative fields and stored the answers in one tagged database. Each company is rated from 1 to 5 on a fixed rubric with three lenses, Business Quality, Competitive Dynamics, and Risk, covering pricing power, barriers to switching, mission criticality, unit economics, management quality, AI exposure, and accounting red flags. A score of 5 is the most favourable reading on every axis, including risk, and every score opens to a written rationale with its sources and the date it was generated. The product is for investors who manage their own money, and for fund investors, family offices, equity analysts, and equity sales teams who need to get current on a company quickly. The shared rubric lets a user screen the universe on those judgments, for example names with pricing power of 4 or better and high barriers to switching, alongside ordinary financial ratios. Company pages also explain large price moves with dated, sourced notes. A free plan includes 10 result deep-dives a month and needs no card. Consumer access is $39 a month or $390 a year, with unlimited deep-dives and the database exposed as an MCP server in Claude and ChatGPT. Arnav, a Princeton graduate and long/short tech investor in London, posted the launch for the product he is building. The release is aimed at the stretch of a research session that usually goes to prompting a model and waiting for it to pull filings and transcripts. Those answers are already tagged and scored, and a chat assistant can open them through the MCP connection. A5 Labs says Baseline was built by former Rothschild & Co analysts and publishes its accuracy checks. A July 2026 review of 97 factual claims across 21 companies found 82 percent of durable claims verified against sources and none fabricated. The tool surfaces and screens candidates. It does not predict returns.