Dexter Jp

Dexter JP is an open source autonomous research agent for Japanese listed companies. Given a question, it plans its own research, pulls data from several sources, checks its findings and writes up a report. It is a fork of the Dexter financial research agent built for US stocks, rebuilt for the Japanese market by the team behind EDINET DB, and it draws on EDINET DB for securities report text and financial data and on the Japan Exchange Group's market data API for share prices. It suits individual investors, analysts and developers who want to interrogate Japanese annual securities reports with an AI agent rather than read them by hand. Its headline feature, /check, takes a user's hypothesis about a company, splits it into separate claims, and tests each claim against individual paragraphs of the company's own filing, labelling each as supporting, conflicting or unrelated with a citation, and stopping at undetermined when a paragraph cannot settle it. The tool deliberately refuses to give buy or sell advice, price targets or valuation opinions, and it documents exactly which data goes to which provider. A recorded demo runs with no keys, while live checks need an EDINET DB API key and a TypeSafe API key, plus a key for the chosen language model. The agent itself is free on GitHub. EDINET DB keys are free with registration, and its published plans are Free at ¥0 with 100 API requests per day, Light at ¥2,480 per month (offered at ¥1,480 to the first 100 subscribers), Pro at ¥4,980 per month or ¥49,800 per year, and Developer at ¥29,800 per month or ¥298,000 per year for a single named user. The project states it is for education and information only, not investment advice.