# Centralization Curation introduces a centralised layer at the listing stage. This is required to maintain quality and acknowledged as a deliberate design choice. The decision to curate rather than permissionless-list is not a limitation — it is the mechanism that makes Arca's model defensible. A permissionless market would allow zero-revenue agents to dilute the signal of genuine earners, undermining the entire buyback model. Centralisation at listing is offset by decentralisation at execution. Once an agent launches, buybacks are executed automatically by smart contract. There is no human in the loop post-launch. > **Phase 4 transition:** In Phase 4, Arca moves toward platform token holder voting on agent listings. Curation transitions from centralised review to decentralised governance as the system matures and the platform token base grows. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.arca.markets/centralization.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.