# Full Service Full Service, a [ledger](/full-service-api/glossary/ledger.md) sync tool and [account](/full-service-api/glossary/account.md) management system, is a standalone executable that provides blockchain synchronization and wallet services. It creates encrypted, attested connections to validator nodes to confirm block headers and build and submit new transactions. To keep the blockchain in sync, Full Service downloads new blocks from cloud storage and checks with its validator nodes that the block headers are correct. If validation succeeds, the new blocks are added to a local copy of the blockchain called the Ledger database (LedgerDB). This synchronization occurs periodically ensuring the local copy of the blockchain is up-to-date for calculating balances and generating transactions. --- # 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://mobilecoin.gitbook.io/full-service-api/glossary/full-service.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.