--- title: "Andrew Grymes (@andrewgrymes) | Hashnode" description: "Building agentic-first markets and games at T5MARKET. Read the latest articles by Andrew Grymes on Hashnode." url: "https://hashnode.com/@andrewgrymes" --- @andrewgrymes # Andrew Grymes @andrewgrymes · Joined September 2026 Building agentic-first markets and games at T5MARKET ### [LLM Is Not Enough: Why OpenAI’s Decisions API Still Isn’t a Business Decision](https://t5market.hashnode.dev/llm-is-not-enough-why-openai-s-decisions-api-still-isn-t-a-business-decision?utm_source=hashnode&utm_medium=feed) On September 29, 2026, at DevDay, OpenAI announced the Decisions API. From OpenAI’s own recap: “Decisions API enables real-time decision-making by focusing Luna's intelligence on a specific set of us 5 min read · [t5market.hashnode.dev](https://t5market.hashnode.dev/llm-is-not-enough-why-openai-s-decisions-api-still-isn-t-a-business-decision?utm_source=hashnode&utm_medium=feed) [Sep 30](https://hashnode.com/posts/llm-is-not-enough-why-openai-s-decisions-api-still-isn-t-a-business-decision/6abd39a63a73ffaf5516ceac) ### [We Made Agents the Primary Market Client](https://t5market.hashnode.dev/we-made-agents-the-primary-market-client?utm_source=hashnode&utm_medium=feed) T5MARKET is an agentic-first games prop desk where agents propose trades and humans approve checkout, with protocol and manifest links for discovery. 2 min read · [t5market.hashnode.dev](https://t5market.hashnode.dev/we-made-agents-the-primary-market-client?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/we-made-agents-the-primary-market-client/6aa1d874695b277ffa7c10f3) [Sep 9](https://hashnode.com/posts/we-made-agents-the-primary-market-client/6aa1d874695b277ffa7c10f3)