Agents Prompt People: Using Agents for Long-Horizon Financial Work

At AI Engineer New York, Arca lead AI engineer Aman Singh described how the AI-native wealth management firm uses agents for long-horizon, stop-start work that can take up to ten days, supported by an internal per-client memory system and a custom harness that selects models from providers including Anthropic and OpenAI. Agents are limited to analysis and proposing solutions, while trading and money movement stay with human advisors under fully deterministic safety restrictions, and a meta-agent analyzes advisor feedback and agent traces to suggest harness improvements. Arca recently raised $48.5 million in a round led by General Catalyst, with participation from Index Ventures and Venrock.