diff --git a/packages/client/src/actions/index.js b/packages/client/src/actions/index.js
index 08e74c7cb..04febe8a6 100644
--- a/packages/client/src/actions/index.js
+++ b/packages/client/src/actions/index.js
@@ -1,6 +1,6 @@
 import _ from 'lodash/fp.js'
 import F from 'futil'
-import { encode, Tree } from '../util/tree.js'
+import { encode, Tree, anyLeaves, allLeaves } from '../util/tree.js'
 import { getTypeProp } from '../types.js'
 import wrap from './wrap.js'
 import { dedupeWalk } from '../node.js'
@@ -129,8 +129,9 @@ export default (config) => {
   let pauseNested = (path) => mutateNested(path, { paused: true })
   let unpauseNested = (path) => mutateNested(path, { paused: false })
 
-  let nodeLeaves = _.flow(getNode, Tree.leaves)
-  let isPausedNested = _.flow(nodeLeaves, _.every('paused'))
+  let anyPathLeaves = (path, fn) => anyLeaves(fn, getNode(path))
+  let allPathLeaves = (path, fn) => allLeaves(fn, getNode(path))
+  let isPausedNested = (path) => allPathLeaves(path, 'paused')
 
   return {
     add,
@@ -145,5 +146,7 @@ export default (config) => {
     isPausedNested,
     pauseNested,
     unpauseNested,
+    allLeaves: allPathLeaves,
+    anyLeaves: anyPathLeaves,
   }
 }
diff --git a/packages/client/src/node.js b/packages/client/src/node.js
index 5f22b2015..731b7c7e1 100644
--- a/packages/client/src/node.js
+++ b/packages/client/src/node.js
@@ -1,6 +1,6 @@
 import _ from 'lodash/fp.js'
 import F from 'futil'
-import { Tree, encode } from './util/tree.js'
+import { Tree, encode, anyLeaves, allLeaves } from './util/tree.js'
 import {
   runTypeFunction,
   runTypeFunctionOrDefault,
@@ -32,6 +32,8 @@ export let internalStateKeys = [
   'forceReplaceResponse',
   'expand',
   'collapse',
+  'someError',
+  'everyPaused',
 ]
 
 export let autoKey = (x) => F.compactJoin('-', [x.field, x.type]) || 'node'
@@ -50,6 +52,10 @@ export let initNode = _.curry((actionProps, dedupe, parentPath, node) => {
     ..._.omit(_.keys(node), snapshot(getTypeProp(types, 'defaults', node))),
     key,
     path: [...parentPath, key],
+    ...(node.children && {
+      someError: () => anyLeaves('error', node),
+      everyPaused: () => allLeaves('paused', node),
+    }),
   })
 })
 
diff --git a/packages/client/src/util/tree.js b/packages/client/src/util/tree.js
index d00207669..bd1bc19a4 100644
--- a/packages/client/src/util/tree.js
+++ b/packages/client/src/util/tree.js
@@ -28,3 +28,6 @@ export let postWalkBranches = (fn) =>
       if (Tree.traverse(node)) fn(node, ...args)
     }
   )
+
+export let anyLeaves = _.curry((fn, node) => _.some(fn, Tree.leaves(node)))
+export let allLeaves = _.curry((fn, node) => _.every(fn, Tree.leaves(node)))