# AI Agent with Slack Approvals
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# AI Agent with Slack Approvals
AIAnthropicSlackUtilities
AI Agents with tools are very useful, but when the tools are delicate or have a non-trivial blast radius, it's crucial to have a human in the loop for reviewing any such tool use.

This is an AI Agent example with the Anthropic app and an approval harness for tool use. The agent responds to messages on Slack, and all tool use needs to be interactively approved by the user on Slack.
![](data:image/svg+xml,%3csvg%20version='1.1'%20id='Layer_1'%20xmlns:x='ns_extend;'%20xmlns:i='ns_ai;'%20xmlns:graph='ns_graphs;'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%2092.2%2065'%20style='enable-background:new%200%200%2092.2%2065;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%23FFFFFF;}%20%3c/style%3e%3cmetadata%3e%3csfw%20xmlns='ns_sfw;'%3e%3cslices%3e%3c/slices%3e%3csliceSourceBounds%20bottomLeftOrigin='true'%20height='65'%20width='92.2'%20x='-43.7'%20y='-98'%3e%3c/sliceSourceBounds%3e%3c/sfw%3e%3c/metadata%3e%3cpath%20class='st0'%20d='M66.5,0H52.4l25.7,65h14.1L66.5,0z%20M25.7,0L0,65h14.4l5.3-13.6h26.9L51.8,65h14.4L40.5,0C40.5,0,25.7,0,25.7,0z%20M24.3,39.3l8.8-22.8l8.8,22.8H24.3z'%3e%3c/path%3e%3c/svg%3e)AnthropicAgentAgent![](data:image/svg+xml,%3csvg%20version='1.1'%20id='Layer_1'%20xmlns:x='ns_extend;'%20xmlns:i='ns_ai;'%20xmlns:graph='ns_graphs;'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%2092.2%2065'%20style='enable-background:new%200%200%2092.2%2065;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%23FFFFFF;}%20%3c/style%3e%3cmetadata%3e%3csfw%20xmlns='ns_sfw;'%3e%3cslices%3e%3c/slices%3e%3csliceSourceBounds%20bottomLeftOrigin='true'%20height='65'%20width='92.2'%20x='-43.7'%20y='-98'%3e%3c/sliceSourceBounds%3e%3c/sfw%3e%3c/metadata%3e%3cpath%20class='st0'%20d='M66.5,0H52.4l25.7,65h14.1L66.5,0z%20M25.7,0L0,65h14.4l5.3-13.6h26.9L51.8,65h14.4L40.5,0C40.5,0,25.7,0,25.7,0z%20M24.3,39.3l8.8-22.8l8.8,22.8H24.3z'%3e%3c/path%3e%3c/svg%3e)AnthropicAgent Tool ResultComplete Addition![](data:image/svg+xml,%3csvg%20width='54'%20height='54'%20viewBox='0%200%2054%2054'%20xmlns='http://www.w3.org/2000/svg'%20role='presentation'%3e%3ctitle%3eSlack%3c/title%3e%3cg%20fill='none'%20fill-rule='evenodd'%3e%3cpath%20d='M19.712.133a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386h5.376V5.52A5.381%205.381%200%200%200%2019.712.133m0%2014.365H5.376A5.381%205.381%200%200%200%200%2019.884a5.381%205.381%200%200%200%205.376%205.387h14.336a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386'%20fill='%2344BEDF'%3e%3c/path%3e%3cpath%20d='M53.76%2019.884a5.381%205.381%200%200%200-5.376-5.386%205.381%205.381%200%200%200-5.376%205.386v5.387h5.376a5.381%205.381%200%200%200%205.376-5.387m-14.336%200V5.52A5.381%205.381%200%200%200%2034.048.133a5.381%205.381%200%200%200-5.376%205.387v14.364a5.381%205.381%200%200%200%205.376%205.387%205.381%205.381%200%200%200%205.376-5.387'%20fill='%232EB67D'%3e%3c/path%3e%3cpath%20d='M34.048%2054a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386h-5.376v5.386A5.381%205.381%200%200%200%2034.048%2054m0-14.365h14.336a5.381%205.381%200%200%200%205.376-5.386%205.381%205.381%200%200%200-5.376-5.387H34.048a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386'%20fill='%23ECB22E'%3e%3c/path%3e%3cpath%20d='M0%2034.249a5.381%205.381%200%200%200%205.376%205.386%205.381%205.381%200%200%200%205.376-5.386v-5.387H5.376A5.381%205.381%200%200%200%200%2034.25m14.336-.001v14.364A5.381%205.381%200%200%200%2019.712%2054a5.381%205.381%200%200%200%205.376-5.387V34.25a5.381%205.381%200%200%200-5.376-5.387%205.381%205.381%200%200%200-5.376%205.387'%20fill='%23E01E5A'%3e%3c/path%3e%3c/g%3e%3c/svg%3e)SlackApp Mention SubscriptionListen for Mentions![](data:image/svg+xml,%3csvg%20width='54'%20height='54'%20viewBox='0%200%2054%2054'%20xmlns='http://www.w3.org/2000/svg'%20role='presentation'%3e%3ctitle%3eSlack%3c/title%3e%3cg%20fill='none'%20fill-rule='evenodd'%3e%3cpath%20d='M19.712.133a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386h5.376V5.52A5.381%205.381%200%200%200%2019.712.133m0%2014.365H5.376A5.381%205.381%200%200%200%200%2019.884a5.381%205.381%200%200%200%205.376%205.387h14.336a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386'%20fill='%2344BEDF'%3e%3c/path%3e%3cpath%20d='M53.76%2019.884a5.381%205.381%200%200%200-5.376-5.386%205.381%205.381%200%200%200-5.376%205.386v5.387h5.376a5.381%205.381%200%200%200%205.376-5.387m-14.336%200V5.52A5.381%205.381%200%200%200%2034.048.133a5.381%205.381%200%200%200-5.376%205.387v14.364a5.381%205.381%200%200%200%205.376%205.387%205.381%205.381%200%200%200%205.376-5.387'%20fill='%232EB67D'%3e%3c/path%3e%3cpath%20d='M34.048%2054a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386h-5.376v5.386A5.381%205.381%200%200%200%2034.048%2054m0-14.365h14.336a5.381%205.381%200%200%200%205.376-5.386%205.381%205.381%200%200%200-5.376-5.387H34.048a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386'%20fill='%23ECB22E'%3e%3c/path%3e%3cpath%20d='M0%2034.249a5.381%205.381%200%200%200%205.376%205.386%205.381%205.381%200%200%200%205.376-5.386v-5.387H5.376A5.381%205.381%200%200%200%200%2034.25m14.336-.001v14.364A5.381%205.381%200%200%200%2019.712%2054a5.381%205.381%200%200%200%205.376-5.387V34.25a5.381%205.381%200%200%200-5.376-5.387%205.381%205.381%200%200%200-5.376%205.387'%20fill='%23E01E5A'%3e%3c/path%3e%3c/g%3e%3c/svg%3e)SlackSend Text MessageSend Response![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine definitionTool call approval![](data:image/svg+xml,%3csvg%20width='54'%20height='54'%20viewBox='0%200%2054%2054'%20xmlns='http://www.w3.org/2000/svg'%20role='presentation'%3e%3ctitle%3eSlack%3c/title%3e%3cg%20fill='none'%20fill-rule='evenodd'%3e%3cpath%20d='M19.712.133a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386h5.376V5.52A5.381%205.381%200%200%200%2019.712.133m0%2014.365H5.376A5.381%205.381%200%200%200%200%2019.884a5.381%205.381%200%200%200%205.376%205.387h14.336a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386'%20fill='%2344BEDF'%3e%3c/path%3e%3cpath%20d='M53.76%2019.884a5.381%205.381%200%200%200-5.376-5.386%205.381%205.381%200%200%200-5.376%205.386v5.387h5.376a5.381%205.381%200%200%200%205.376-5.387m-14.336%200V5.52A5.381%205.381%200%200%200%2034.048.133a5.381%205.381%200%200%200-5.376%205.387v14.364a5.381%205.381%200%200%200%205.376%205.387%205.381%205.381%200%200%200%205.376-5.387'%20fill='%232EB67D'%3e%3c/path%3e%3cpath%20d='M34.048%2054a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386h-5.376v5.386A5.381%205.381%200%200%200%2034.048%2054m0-14.365h14.336a5.381%205.381%200%200%200%205.376-5.386%205.381%205.381%200%200%200-5.376-5.387H34.048a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386'%20fill='%23ECB22E'%3e%3c/path%3e%3cpath%20d='M0%2034.249a5.381%205.381%200%200%200%205.376%205.386%205.381%205.381%200%200%200%205.376-5.386v-5.387H5.376A5.381%205.381%200%200%200%200%2034.25m14.336-.001v14.364A5.381%205.381%200%200%200%2019.712%2054a5.381%205.381%200%200%200%205.376-5.387V34.25a5.381%205.381%200%200%200-5.376-5.387%205.381%205.381%200%200%200-5.376%205.387'%20fill='%23E01E5A'%3e%3c/path%3e%3c/g%3e%3c/svg%3e)SlackSend Message With InteractionsRequest ApprovalBusiness logic (built-in)ConditionCheck Button![](data:image/svg+xml,%3csvg%20width='54'%20height='54'%20viewBox='0%200%2054%2054'%20xmlns='http://www.w3.org/2000/svg'%20role='presentation'%3e%3ctitle%3eSlack%3c/title%3e%3cg%20fill='none'%20fill-rule='evenodd'%3e%3cpath%20d='M19.712.133a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386h5.376V5.52A5.381%205.381%200%200%200%2019.712.133m0%2014.365H5.376A5.381%205.381%200%200%200%200%2019.884a5.381%205.381%200%200%200%205.376%205.387h14.336a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386'%20fill='%2344BEDF'%3e%3c/path%3e%3cpath%20d='M53.76%2019.884a5.381%205.381%200%200%200-5.376-5.386%205.381%205.381%200%200%200-5.376%205.386v5.387h5.376a5.381%205.381%200%200%200%205.376-5.387m-14.336%200V5.52A5.381%205.381%200%200%200%2034.048.133a5.381%205.381%200%200%200-5.376%205.387v14.364a5.381%205.381%200%200%200%205.376%205.387%205.381%205.381%200%200%200%205.376-5.387'%20fill='%232EB67D'%3e%3c/path%3e%3cpath%20d='M34.048%2054a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386h-5.376v5.386A5.381%205.381%200%200%200%2034.048%2054m0-14.365h14.336a5.381%205.381%200%200%200%205.376-5.386%205.381%205.381%200%200%200-5.376-5.387H34.048a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386'%20fill='%23ECB22E'%3e%3c/path%3e%3cpath%20d='M0%2034.249a5.381%205.381%200%200%200%205.376%205.386%205.381%205.381%200%200%200%205.376-5.386v-5.387H5.376A5.381%205.381%200%200%200%200%2034.25m14.336-.001v14.364A5.381%205.381%200%200%200%2019.712%2054a5.381%205.381%200%200%200%205.376-5.387V34.25a5.381%205.381%200%200%200-5.376-5.387%205.381%205.381%200%200%200-5.376%205.387'%20fill='%23E01E5A'%3e%3c/path%3e%3c/g%3e%3c/svg%3e)SlackUpdate Message BlocksUpdate Message - Approved![](data:image/svg+xml,%3csvg%20width='54'%20height='54'%20viewBox='0%200%2054%2054'%20xmlns='http://www.w3.org/2000/svg'%20role='presentation'%3e%3ctitle%3eSlack%3c/title%3e%3cg%20fill='none'%20fill-rule='evenodd'%3e%3cpath%20d='M19.712.133a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386h5.376V5.52A5.381%205.381%200%200%200%2019.712.133m0%2014.365H5.376A5.381%205.381%200%200%200%200%2019.884a5.381%205.381%200%200%200%205.376%205.387h14.336a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386'%20fill='%2344BEDF'%3e%3c/path%3e%3cpath%20d='M53.76%2019.884a5.381%205.381%200%200%200-5.376-5.386%205.381%205.381%200%200%200-5.376%205.386v5.387h5.376a5.381%205.381%200%200%200%205.376-5.387m-14.336%200V5.52A5.381%205.381%200%200%200%2034.048.133a5.381%205.381%200%200%200-5.376%205.387v14.364a5.381%205.381%200%200%200%205.376%205.387%205.381%205.381%200%200%200%205.376-5.387'%20fill='%232EB67D'%3e%3c/path%3e%3cpath%20d='M34.048%2054a5.381%205.381%200%200%200%205.376-5.387%205.381%205.381%200%200%200-5.376-5.386h-5.376v5.386A5.381%205.381%200%200%200%2034.048%2054m0-14.365h14.336a5.381%205.381%200%200%200%205.376-5.386%205.381%205.381%200%200%200-5.376-5.387H34.048a5.381%205.381%200%200%200-5.376%205.387%205.381%205.381%200%200%200%205.376%205.386'%20fill='%23ECB22E'%3e%3c/path%3e%3cpath%20d='M0%2034.249a5.381%205.381%200%200%200%205.376%205.386%205.381%205.381%200%200%200%205.376-5.386v-5.387H5.376A5.381%205.381%200%200%200%200%2034.25m14.336-.001v14.364A5.381%205.381%200%200%200%2019.712%2054a5.381%205.381%200%200%200%205.376-5.387V34.25a5.381%205.381%200%200%200-5.376-5.387%205.381%205.381%200%200%200-5.376%205.387'%20fill='%23E01E5A'%3e%3c/path%3e%3c/g%3e%3c/svg%3e)SlackUpdate Message BlocksUpdate Message - Rejected![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine callAsk for approvalBusiness logic (built-in)TransformAdd![](data:image/svg+xml,%3csvg%20version='1.1'%20id='Layer_1'%20xmlns:x='ns_extend;'%20xmlns:i='ns_ai;'%20xmlns:graph='ns_graphs;'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%2092.2%2065'%20style='enable-background:new%200%200%2092.2%2065;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%23FFFFFF;}%20%3c/style%3e%3cmetadata%3e%3csfw%20xmlns='ns_sfw;'%3e%3cslices%3e%3c/slices%3e%3csliceSourceBounds%20bottomLeftOrigin='true'%20height='65'%20width='92.2'%20x='-43.7'%20y='-98'%3e%3c/sliceSourceBounds%3e%3c/sfw%3e%3c/metadata%3e%3cpath%20class='st0'%20d='M66.5,0H52.4l25.7,65h14.1L66.5,0z%20M25.7,0L0,65h14.4l5.3-13.6h26.9L51.8,65h14.4L40.5,0C40.5,0,25.7,0,25.7,0z%20M24.3,39.3l8.8-22.8l8.8,22.8H24.3z'%3e%3c/path%3e%3c/svg%3e)AnthropicAgent Tool ResultComplete Subtraction![](data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2016%2016'%3e%3cpath%20fill='%23fff'%20d='m10.3%208.2l-.9.9l.9.9l-1.2%201.2l4.3%204.3c.6.6%201.5.6%202.1%200s.6-1.5%200-2.1zm3.9%206.8c-.4%200-.8-.3-.8-.8c0-.4.3-.8.8-.8s.8.3.8.8s-.3.8-.8.8M3.6%208l.9-.6L6%205.7l.9.9l.9-.9l-.1-.1c.2-.5.3-1%20.3-1.6c0-2.2-1.8-4-4-4c-.6%200-1.1.1-1.6.3l2.9%202.9l-2.1%202.1L.3%202.4C.1%202.9%200%203.4%200%204c0%202.1%201.6%203.7%203.6%204'/%3e%3cpath%20fill='%23fff'%20d='m8%2010.8l.9-.8l-.9-.9l5.7-5.7l1.2-.4L16%20.8l-.7-.7l-2.3%201l-.5%201.2L6.9%208L6%207.1l-.8.9s.8.6-.1%201.5c-.5.5-1.3-.1-2.8%201.4L.2%2013s-.6%201%20.6%202.2s2.2.6%202.2.6l2.1-2.1c1.4-1.4.9-2.3%201.3-2.7c.9-.9%201.6-.2%201.6-.2m-3.1-.4l.7.7l-3.8%203.8l-.7-.7z'/%3e%3c/svg%3e)UtilitiesSubroutine callAsk for approval (1)Business logic (built-in)TransformMultiplyPress enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.