error-inbox
Keep the last 30 failed or refused tool calls in one pane.
newpaneguardcommand
Keep the last 30 failed or refused tool calls in one pane.
Keep the last 30 failed or refused tool calls in one pane.
Use it when: Revisit failures without searching the transcript.
Screenshot of this mod's render tree in the fixture preview, with sample data. This is not a capture of the Claude Code application. How previews are made.
claude plugin marketplace add whyashthakker/awesome-claude-code-mods
claude plugin install error-inbox@awesome-claude-code-modsRun /reload-plugins in an existing session, then /error-inbox. Use Tab and Enter to operate controls; Esc closes the pane. Terminal and Desktop Code tab supported; pane UI is unavailable in claude -p and the VS Code chat panel.
Try the source without installing:
claude --plugin-dir ./mods/error-inboxKeeps truncated tool error text in memory; may contain sensitive output.
Module variables reset on hot reload. Diagnostic history begins when the mod loads and lasts until reload or process exit; it does not reconstruct earlier activity. All display output is bounded; viewers may truncate long content to 9,000 characters. Relative file paths and Git commands use the session working directory.
Tested with Claude Code 2.1.288. Minimum documented mods version: 2.1.287. The API can change; validate against your installed version.
claude plugin validate mods/error-inbox --strict
claude plugin test mods/error-inboxTests cover plugin commands, pane isolation, both UI surfaces, and the behavior described in tests/register.test.ts. Drawing tests validate element trees; they do not verify pixels painted by the native apps. Validation details.
MIT licensed. No runtime packages or build step required.
hooks/register.js 45 lines1import { clean, text, code, row, frame, bar, pretty, bounded, entries, safePath } from './ui.js'
2const ID = "error-inbox"
3let errors = []
4export function register(on) {
5 on('session.start', async ($, e, next) => {
6
7 await $.command.register({name:ID, description:"Keep the last 30 failed or refused tool calls in one pane.", immediate:true, argumentHint:""})
8 return next(e)
9 })
10 on('command.run', {command:"error-inbox"}, async ($, e) => {
11
12 await $.ui.open({id:ID,title:"Error Inbox",focus:true,closeOnEscape:true})
13 return {}
14 })
15
16on('tool.call', async ($, e, next) => {
17 const r = await next(e)
18 if(r.deny || r.isError) {
19 errors = [...errors,{tool:e.tool,reason:clean(r.deny || (typeof r.result === 'string' ? r.result : 'Tool returned an error'),500)}].slice(-30)
20 $.ui.invalidate('ui.render')
21 }
22 return r
23})
24
25 on('ui.render', {component:'Pane'}, async ($, e, next) => {
26 if(e.requestId !== ID) return next(e)
27 const E = $.ui.resolve(e)
28 try {
29 const body = await draw($, E)
30 return frame(E,"Error Inbox","Keep the last 30 failed or refused tool calls in one pane.",body)
31 } catch(error) {
32 return frame(E,"Error Inbox",'Unable to inspect this data.',[text(E,error.message,{color:'yellow'}),E.Button({key:'refresh',label:'Refresh',onPress:()=>$.ui.invalidate('ui.render')})])
33 }
34 })
35}
36async function draw($, E) {
37 const refresh = E.Button({key:'refresh',label:'Refresh',hotkey:'r',plain:true,onPress:()=>$.ui.invalidate('ui.render')})
38
39return [text(E,errors.length+' recent failures',{bold:true}),
40 ...errors.map((x,i)=>text(E,(i+1)+'. '+x.tool+' · '+x.reason,{color:'yellow'})),
41 ...(errors.length ? []:[text(E,'No failed calls observed. Keep going.')]),
42 E.Button({key:'clear',label:'Clear inbox',onPress:()=>{errors=[];$.ui.invalidate('ui.render')}})]
43
44}
45hooks/ui.js 36 lines1// Pure UI helpers. No engine access; each plugin contains its own copy.
2export function clean(value, limit = 9000) {
3 return String(value ?? '').replace(/[\u0000-\u0008\u000b\u000c\u000e-\u001f\u007f-\u009f]/g, '').slice(0, limit)
4}
5export function text(E, value, props = {}) {
6 return E.Text({ ...props, children: [clean(value)] })
7}
8export function code(E, value, language = 'text') {
9 return E.Code({ source: clean(value), language })
10}
11export function row(E, children) {
12 return E.Box({ flexDirection: 'row', columnGap: 2, flexWrap: 'wrap', children })
13}
14export function frame(E, title, subtitle, children) {
15 return E.Box({ flexDirection: 'column', gap: 1, children: [
16 text(E, title, { bold: true, color: 'cyan' }),
17 text(E, subtitle, { dimColor: true }), ...children,
18 ] })
19}
20export function bar(percent, width = 24) {
21 const p = Math.max(0, Math.min(100, Number(percent) || 0))
22 const n = Math.round(p / 100 * width)
23 return '[' + '#'.repeat(n) + '-'.repeat(width - n) + '] ' + p.toFixed(1) + '%'
24}
25export function pretty(value) { return JSON.stringify(value, null, 2) }
26export function bounded(value, max = 9000) {
27 if (value.length > max) throw new Error('Input exceeds ' + max + ' characters. Use a smaller selection.')
28 return value
29}
30export function entries(value) { return value && typeof value === 'object' ? Object.entries(value) : [] }
31export function safePath(value) {
32 const path = value.trim()
33 if (!path || path.startsWith('-') || /[\x00-\x1f]/.test(path)) throw new Error('Enter a path without control characters or leading flags.')
34 return path
35}
36