# Variables `LINK_RECEIPT_FLAG` - hex number to indicate receipt or message `LINK_BATCH_SIZE` - batch size to process at a time `LINK_PROTOCOL_ETHEREUM` - whether EVM or not `PUSH_FOREIGN_MESSAGE_METHOD_ID` - EVM method in hex `BYTES_ARRAY_POINTER_PUSH_FOREIGN_MESSAGE` - hex placeholder for pushing foreign message `ORACLE_HOOK_FILTER` - see [here](/liquidapps-documentation/dapp-network-services/dapp-network-services/liquidharmony/smart-contract-macros/oracle_hook_filter.md) - used to abort service request, i.e., not spend CPU unless something needs to be done `LINK_PROCESSING_TIMEOUT` - window in which transaction should be processed, if not processed within this window, deemed failed transaction and processed as a receipt, funds returned to sender `LINK_CRON_INTERVAL` - interval to run [crons](/liquidapps-documentation/introduction/dapp-network-resources/link-library/eosio-link/crons.md) on `LINK_PROVIDER_THRESHOLD` - DSP threshold required to fetch last irreversible block status and new batches --- # 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.liquidapps.io/liquidapps-documentation/introduction/dapp-network-resources/link-library/eosio-link/variables.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.