Claude Code settings reference

Complete reference for every Claude Code settings.json key: where each one goes, its type and default, and a paste-ready example, with an index of every key.

export const BackToIndex = ({href = '#all-settings', label = 'Back to index'}) => { const [show, setShow] = useState(false); useEffect(() => { const onScroll = () => setShow(window.scrollY > window.innerHeight); onScroll(); window.addEventListener('scroll', onScroll, { passive: true }); return () => window.removeEventListener('scroll', onScroll); }, []); return

export const ReferenceFilter = ({placeholder, noun, facets, facetOrder, columnHelp, children}) => { const useLive = init => { const [v, setV] = useState(init); const ref = useRef(init); return [v, ref, x => { ref.current = x; setV(x); }]; }; const cap = s => s.charAt(0).toUpperCase() + s.slice(1); const plural = s => s.endsWith('y') ? s.slice(0, -1) + 'ies' : s + 's'; const facetNames = facets || ['category', 'topic', 'scope', 'where']; const orderOf = {}; Object.keys(facetOrder || ({})).forEach(k => { orderOf[k] = facetOrder[k].map(x => String(x).toLowerCase()); }); const rankIn = (col, v) => { const list = orderOf[col]; if (!list) return -1; const i = list.indexOf(String(v).toLowerCase()); return i < 0 ? list.length : i; }; const cmpValues = col => (a, b) => { const ra = rankIn(col, a); const rb = rankIn(col, b); if (ra !== rb) return ra - rb; return a < b ? -1 : a > b ? 1 : 0; }; const help = columnHelp || ({}); const FIRST_COL_HELP = 'Click an entry to open it.'; const optionLabel = (f, c) => c === 'All' ? 'All ' + plural(f.label.toLowerCase()) : c; const nounText = noun || 'entries'; const placeholderText = placeholder || 'Filter this reference'; const rootRef = useRef(null); const tablesRef = useRef(null); const searchRef = useRef(null); const menuRef = useRef({}); const [q, qRef, setQ] = useLive(''); const [sel, selRef, setSel] = useLive({}); const [sortBy, sortRef, setSortBy] = useLive(null); const [menuOpen, menuOpenRef, setMenu] = useLive(null); const [facetList, setFacetList] = useState([]); const [firstHead, setFirstHead] = useState(''); const [counts, setCounts] = useState({ shown: 0, total: 0 }); const [disabled, setDisabled] = useState(false); const menuBtn = name => menuRef.current[name] ? menuRef.current[name].querySelector(':scope > button') : null; const menuList = name => menuRef.current[name] ? menuRef.current[name].querySelector('[role="listbox"]') : null; const closeMenu = name => { setMenu(null); const btn = menuBtn(name); if (btn) btn.focus(); }; const focusSelected = name => { const list = menuList(name); if (!list) return; const btn = list.querySelector('button[aria-selected="true"]') || list.querySelector('button'); if (btn) btn.focus(); }; const setFacet = (name, value) => { setSel(Object.assign({}, selRef.current, { [name]: value })); apply(qRef.current); closeMenu(name); }; const sortTables = by => { (tablesRef.current || []).forEach(tab => { const t = tab.el; const idx = tab.heads.indexOf(by); const body = t.querySelector('tbody'); if (idx < 0 || !body) return; const rows = [...body.querySelectorAll('tr')]; const keyOf = r => r.children[idx] ? r.children[idx].textContent.trim().toLowerCase() : ''; const cmp = cmpValues(by); rows.map((r, i) => ({ r, i: Number(r.dataset.sfIndex !== undefined ? r.dataset.sfIndex : i), k: keyOf(r) })).sort((a, b) => cmp(a.k, b.k) || a.i - b.i).forEach(x => body.appendChild(x.r)); [...t.querySelectorAll('thead th')].forEach((h, i) => { const sortable = tab.heads[i] === tab.heads[0] || facetNames.indexOf(tab.heads[i]) > -1; if (sortable) h.setAttribute('aria-sort', i === idx ? 'ascending' : 'none'); else h.removeAttribute('aria-sort'); }); }); }; const scan = () => { const tables = []; let el = rootRef.current ? rootRef.current.nextElementSibling : null; while (el) { if (el.tagName === 'H2' || el.querySelector(':scope > h2')) break; const found = el.tagName === 'TABLE' ? [el] : [...el.querySelectorAll('table')]; found.forEach(t => { const headCells = [...t.querySelectorAll('thead th, thead td')]; const heads = headCells.map(h => h.textContent.trim().toLowerCase()); if (heads.length === 0) return; const facetIdx = {}; heads.forEach((h, i) => { if (facetNames.indexOf(h) > -1) facetIdx[h] = i; }); if (!t.dataset.sfDecorated) { t.dataset.sfDecorated = '1'; headCells.forEach((h, i) => { const text = i === 0 ? help[heads[0]] || FIRST_COL_HELP : help[heads[i]]; if (text) h.title = text; }); } const rows = [...t.querySelectorAll('tbody tr')].map((r, i) => { if (r.dataset.sfIndex === undefined) r.dataset.sfIndex = String(i); const cells = r.querySelectorAll('td'); const fv = {}; Object.keys(facetIdx).forEach(h => { fv[h] = cells[facetIdx[h]] ? cells[facetIdx[h]].textContent.trim() : ''; }); return { el: r, text: [...cells].map(c => c.textContent).join(' ').toLowerCase(), facets: fv, anchors: [...r.querySelectorAll('a[href^="#"]')].map(a => a.getAttribute('href').slice(1)), ids: [...r.querySelectorAll('[id]')].map(n => n.id) }; }); tables.push({ el: t, box: t.closest('[data-table-wrapper]') || t, rows, heads }); }); el = el.nextElementSibling; } tablesRef.current = tables; if (sortRef.current) sortTables(sortRef.current); return tables; }; const apply = query => { let tables = tablesRef.current || scan(); if (tables.some(t => !t.el.isConnected)) tables = scan(); const needle = query.trim().toLowerCase(); const sel = selRef.current; const activeFacets = Object.keys(sel).filter(h => sel[h] && sel[h] !== 'All'); const show = (el, on) => { const want = on ? '' : 'none'; if (el.style.display !== want) el.style.display = want; }; let total = 0; let shown = 0; const visibleTargets = new Set(); tables.forEach(t => { let tableVisible = 0; t.rows.forEach(row => { total += 1; const catOk = activeFacets.every(h => { const v = row.facets[h]; return v === sel[h] || v === '' || v === undefined; }); const match = catOk && (needle === '' || row.text.includes(needle)); show(row.el, match); if (match) { tableVisible += 1; row.anchors.forEach(a => visibleTargets.add(a)); } }); show(t.box, !(t.rows.length > 0 && tableVisible === 0)); shown += tableVisible; }); if (shown < total && visibleTargets.size > 0) { tables.forEach(t => { t.rows.forEach(row => { if (row.el.style.display === 'none' && row.ids.some(id => visibleTargets.has(id))) { show(row.el, true); show(t.box, true); shown += 1; } }); }); } setCounts({ shown, total }); return total; }; const deriveFacets = tables => { const seen = {}; tables.forEach(t => t.rows.forEach(r => { Object.keys(r.facets).forEach(h => { if (!seen[h]) seen[h] = []; if (r.facets[h] && seen[h].indexOf(r.facets[h]) === -1) seen[h].push(r.facets[h]); }); })); const list = facetNames.filter(h => seen[h] && seen[h].length > 0).map(h => ({ name: h, label: cap(h), values: seen[h].sort(cmpValues(h)) })); setFacetList(list); const first = tables[0] ? tables[0].heads[0] : ''; setFirstHead(first); if (!sortRef.current && first) { setSortBy(first); sortTables(first); } const init = {}; list.forEach(f => { init[f.name] = selRef.current[f.name] || 'All'; }); setSel(init); }; const onChange = value => { setQ(value); apply(value); }; const clearAll = () => { const next = {}; Object.keys(selRef.current).forEach(k => { next[k] = 'All'; }); setSel(next); setQ(''); apply(''); if (searchRef.current) searchRef.current.focus(); }; useEffect(() => { const tables = scan(); deriveFacets(tables); const total = apply(''); let retryTimer; if (total === 0) { retryTimer = setTimeout(() => { tablesRef.current = null; if (apply(qRef.current) > 0) deriveFacets(tablesRef.current); else setDisabled(true); }, 500); } const onKey = e => { if (e.key === 'Escape' && menuOpenRef.current !== null) closeMenu(menuOpenRef.current); if (!searchRef.current) return; if (e.metaKey || e.ctrlKey || e.altKey) return; const active = document.activeElement; const tag = active && active.tagName; const editable = active && active.isContentEditable; const interactive = tag === 'INPUT' || tag === 'TEXTAREA' || tag === 'SELECT' || tag === 'BUTTON' || tag === 'A' || editable || active && active.getAttribute && active.getAttribute('role'); if (e.key === '/' && !interactive) { const r = rootRef.current ? rootRef.current.getBoundingClientRect() : null; if (r && r.bottom > 0 && r.top < (window.innerHeight || 0)) { e.preventDefault(); setMenu(null); searchRef.current.focus(); } } if (e.key === 'Escape' && menuOpenRef.current === null && active === searchRef.current) { onChange(''); searchRef.current.blur(); } }; const onDocClick = e => { const open = menuOpenRef.current; if (open !== null && menuRef.current[open] && !menuRef.current[open].contains(e.target)) setMenu(null); }; window.addEventListener('keydown', onKey); document.addEventListener('mousedown', onDocClick); return () => { if (retryTimer) clearTimeout(retryTimer); window.removeEventListener('keydown', onKey); document.removeEventListener('mousedown', onDocClick); (tablesRef.current || []).forEach(t => { t.box.style.display = ''; t.rows.forEach(row => { row.el.style.display = ''; }); }); }; }, []); useEffect(() => { if (menuOpen !== null) focusSelected(menuOpen); }, [menuOpen]); if (disabled) return null; const facetActive = Object.keys(sel).some(h => sel[h] && sel[h] !== 'All'); const sortOptions = [firstHead].concat(facetList.map(f => f.name)).filter((h, i, a) => h && a.indexOf(h) === i); return <> <div ref={rootRef} className="sf-root" style={{ margin: '16px 0 8px' }}> <div style={{ display: 'flex', gap: '8px', flexWrap: 'wrap', alignItems: 'center' }}> <div style={{ position: 'relative', flex: '1 1 260px', maxWidth: '480px' }}> <input ref={searchRef} value={q} onChange={e => onChange(e.target.value)} placeholder={placeholderText} aria-label={placeholderText} style={{ width: '100%', padding: '8px 56px 8px 12px', borderRadius: '8px', border: '1px solid var(--sf-border)', background: 'var(--sf-bg)', color: 'var(--sf-text)', fontSize: '14px', outline: 'none', boxSizing: 'border-box' }} /> {q ? <button type="button" onClick={() => { onChange(''); if (searchRef.current) searchRef.current.focus(); }} aria-label="Clear text" className="sf-end sf-x"> × : <span className="sf-end" style={{ fontFamily: 'var(--font-mono, ui-monospace, monospace)', fontSize: '11px', color: 'var(--sf-text-4)', border: '1px solid var(--sf-border)', borderRadius: '3px', padding: '0 5px', pointerEvents: 'none' }}> / }