> For the complete documentation index, see [llms.txt](https://docs.guardianservice.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.guardianservice.app/technical-information/users/standard-registry-users-schemas-and-policies/policies/available-policy-workflow-blocks.md). # Available Policy Workflow Blocks ## Available Policy Workflow Blocks

Block	Definition	Documentation Link
InterfaceContainerBlock	A block which contains and organizes other blocks.	container-workflow-block
PolicyRolesBlock	A block which determines a role for the user.	roles-workflow-block
InterfaceStepBlock	Similar to the InterfaceContainerBlock, with the difference that it can only render a single child element.	step-workflow-block
requestVCDocumentBlock	A type of the block which creates a form from the schema, and sends the document to the server.	request-workflow-block
sendToGuardianBlock	A type of the block which can save a new or updated document.	send-workflow-block
reassigningBlock	A type of block which re-signs the document and change the user to document owner.	reassigningblock
InformationBlock	A block type which can display a notification or a progress bar.	information-workflow-block
InterfaceDocumentsSourceBlock	A block type which outputs information from the DB as grid.	interfacedocumentssourceblock
paginationAddon	A block type which adds pagination to the InterfaceDocumentSourceBlock if added	paginationaddon
DocumentsSourceAddOn	A type of block for searching VC as grid	documentssourceaddonblock
filtersAddOnBlock	A child block for 'DocumentsSourceAddon'. Contains additional dynamic filters	filtersaddonblock
InterfaceActionBlock	A block to create custom actions.	action-workflow-block
externalDataBlock	Receives data from the external source and passes them over the the next block.	external-data-workflow-block
retirementDocumentBlock	Receives the VC from the previous block and retires based on the rule(s).	retirementdocumentblock
calculateContainerBlock & calculateMathAddonBlock	The blocks to calculate. calculateContainerBlock: Receives VC from the previous block. Passes the new VC to the next block. calculateMathOnBlock: Child block for 'calculateContainerBlock'. Contains descriptions of variables and formulas.	calculatecontainerblock-and-calculatemathaddonblock
reportBlock	The block container for TrustChain.	reportblock-and-reportitemblock
reportItemBlock	The block for setting up the elements of the TrustChain.	reportblock-and-reportitemblock
Switch Block	This block transfers execution to one or more blocks depending on the parameters	switchblock
timerBlock	timer object which triggers the event	timerblock
aggregateDocumentBlock	block responsible for aggregation of the documents	aggregatedocumentblock
revocationBlock	This Block finds related messages in policy topics, and revokes those messages and sends it to Hedera topic, but it doesn’t save documents in DB	revocationBlock
setRelationshipsBlock	Contains DocumentSourceAddOn Block and set relationships for input document.	setrelationshipsblock
buttonBlock	Block responsible for creating buttons	buttonblock
documentValidatorBlock	Block to validate documents, including linked documents	documentvalidatorblock
tokenActionBlock	Block is responsible to automation actions related to tokens	tokenactionblock
tokenConfirmationBlock	Block enables the owner of the private key for the account to manually perform operations with the token	tokenconfirmationblock
mintDocumentBlock	Block is responsible for adding configurations on calculating the amount of tokens to be minted.	mintdocumentblock
groupManagerBlock	Block allows to manage group membership, add and remove users from the group.	groupmanagerblock
multiSignBlock	This block provides a way to specify multiple signators for a single VC document, and then create a VP based on it.	multisignblock
customLogicBlock	This block is used to perform Logic	customlogicblock
splitBlock	This block allows to accumulate VC documents and produce new VCs in fixed chunks	splitblock
create Token Block	This block is used to create Token template	create Token Block
Impact Addon	This Addon is for the mint block which allows to add additional info for the token being created.	Impact Addon
HttpRequestBlock	This block is used to retrieve information from outside	HttpRequestBlock
historyAddOn	This block turn on history on interfaceDocumentsSourceBlock.	historyAddOn
selective Attributes Block	This will filter attributes (option field) in documents returned by documentsSourceAddon.	selectiveAttributes Block
tagsManagerBlock	This Block is responsible for managing tags in policies.	tagsManagerBlock
extractDataBlock	This Block provides means to extract a data set which corresponds to any of these embedded schemas	extractDataBlock
Data Transformation Addon	This Block produces a transformed result based on the data from the source and filters blocks	Data Transformation Addon
button block Addon	This block is used to display interactive buttons	buttonblockAddon
Dropdown Block Addon	The block is to display an interactive dropdown menu	dropdownblockaddon
RequestVC Document Block Addon	This block is to display an interactive button in the interfaceDocumentsSourceBlock.	requestVCDocumentBlockAddon
IntegrationButtonBlock	This block enable interaction with third-party data providers	IntegrationButton
Global Events Reader Block	This block subscribes to global topics and routes incoming events into policy branches	Global Events Reader
Global Events Writer Block	This block publishes document references to one or more global Hedera topics	Global Events Writer