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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
<meta name="color-scheme" content="dark">
<title>Install · engramx v4.0 "Skill Pack" — bi-temporal mistakes for every AI coding tool</title>
<meta name="description" content="One install. Works in Claude Code, Cursor, Cline, Continue, Aider, Codex, Windsurf, Zed. Bi-temporal mistakes auto-fire before your agent repeats them. Auto-captured from git revert history. Auto-installed on engram init. 89.1% measured token reduction. Local SQLite, zero cloud, Apache 2.0.">
<link rel="canonical" href="https://github.com/NickCirv/engram/blob/main/docs/install.html">
<meta property="og:title" content="engramx v4.0 — bi-temporal mistakes for every AI coding tool. Catches your agent before it repeats a fix the repo already reverted.">
<meta property="og:description" content="npm install -g engramx → engram init. Auto-installs the Sentinel hook. Auto-captures bi-temporal mistakes from git revert. 89.1% measured token reduction. Local SQLite, zero cloud. Apache 2.0.">
<meta property="og:image" content="https://raw.githubusercontent.com/NickCirv/engram/main/assets/banner-v3.png">
<meta name="twitter:card" content="summary_large_image">
<link rel="preconnect" href="https://fonts.bunny.net" crossorigin>
<link rel="stylesheet" href="https://fonts.bunny.net/css?family=jetbrains-mono:400,500,600,700&display=swap">
<style>
/* ----------------------------------------------------------------
engram — Install Page
Aesthetic: Terminal Mono with amber accent (banner-derived)
Brand: lowercase "engram" wordmark, orange-highlighted "a"
Background: near-black #0a0a0a + 20px dot grid
Type: JetBrains Mono everywhere, tabular numerals
Motion: fade + cursor blink only — no springs, no translateY
-------------------------------------------------------------- */
:root {
--bg: #0a0a0a;
--surface: #141414;
--surface-elevated: #1c1c1c;
--surface-hover: rgba(255,255,255,0.03);
--border: rgba(255,255,255,0.08);
--border-strong: rgba(255,255,255,0.16);
--border-accent: rgba(245,158,11,0.28);
--text: #e8e8e8;
--text-secondary: #8a8a8a;
--text-dim: #555555;
--text-on-accent: #0a0a0a;
--accent: #f59e0b; /* amber — matches banner */
--accent-warm: #fbbf24;
--accent-dim: rgba(245,158,11,0.10);
--accent-border: rgba(245,158,11,0.22);
--color-success: #34d399;
--color-warning: #f59e0b;
--color-error: #f87171;
--color-info: #60a5fa;
--radius: 8px;
--radius-sm: 4px;
--radius-lg: 12px;
--font-all: 'JetBrains Mono', 'SF Mono', 'Fira Code', ui-monospace, monospace;
--ease-out: cubic-bezier(0.23, 1, 0.32, 1);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
margin: 0;
font-family: var(--font-all);
font-size: 14px;
line-height: 1.6;
color: var(--text);
background-color: var(--bg);
background-image:
radial-gradient(circle, rgba(255,255,255,0.035) 1px, transparent 1px);
background-size: 20px 20px;
background-attachment: fixed;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
font-variant-numeric: tabular-nums;
overflow-x: hidden;
}
/* Selection — amber, not OS default */
::selection { background: var(--accent); color: var(--text-on-accent); }
/* Focus rings — visible, accent-colored */
:focus-visible {
outline: 2px solid var(--accent);
outline-offset: 2px;
border-radius: var(--radius-sm);
}
a { color: var(--text); text-decoration: none; }
a:hover { color: var(--accent); }
/* ---------- Layout shell ---------- */
.container {
max-width: 1180px;
margin: 0 auto;
padding: 0 1.5rem;
}
/* ---------- Nav ---------- */
.nav {
position: sticky;
top: 0;
z-index: 50;
backdrop-filter: blur(14px) saturate(140%);
-webkit-backdrop-filter: blur(14px) saturate(140%);
background: rgba(10,10,10,0.72);
border-bottom: 1px solid var(--border);
}
.nav-row {
display: flex;
align-items: center;
justify-content: space-between;
gap: 1.5rem;
padding: 0.875rem 0;
}
.wordmark {
font-family: var(--font-all);
font-size: 16px;
font-weight: 700;
letter-spacing: -0.02em;
color: var(--text);
text-transform: lowercase;
display: inline-flex;
align-items: baseline;
gap: 0.5ch;
}
.wordmark .accent { color: var(--accent); }
.wordmark::before {
content: '';
width: 6px;
height: 6px;
border-radius: 50%;
background: var(--accent);
box-shadow: 0 0 8px rgba(245,158,11,0.5);
transform: translateY(-1px);
}
.nav-links {
display: flex;
align-items: center;
gap: 1.25rem;
list-style: none;
margin: 0;
padding: 0;
}
.nav-link {
font-size: 12px;
font-weight: 500;
letter-spacing: 0.04em;
color: var(--text-secondary);
transition: color 0.15s var(--ease-out);
}
.nav-link:hover { color: var(--text); }
@media (max-width: 720px) {
.nav-links li:not(.nav-cta) { display: none; }
}
/* ---------- Hero ---------- */
.hero {
padding: 4rem 0 3rem;
border-bottom: 1px solid var(--border);
position: relative;
}
.hero-pill {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 5px 12px 5px 8px;
border: 1px solid var(--accent-border);
border-radius: 999px;
background: var(--accent-dim);
font-size: 11px;
font-weight: 600;
letter-spacing: 0.12em;
text-transform: uppercase;
color: var(--accent);
}
.hero-pill::before {
content: '';
width: 6px;
height: 6px;
border-radius: 50%;
background: var(--accent);
box-shadow: 0 0 6px rgba(245,158,11,0.6);
animation: pulse-status 2.4s var(--ease-out) infinite;
}
.hero-headline {
font-family: var(--font-all);
font-weight: 700;
font-size: clamp(2.5rem, 7vw, 5.5rem);
line-height: 0.96;
letter-spacing: -0.04em;
margin: 1.75rem 0 1.25rem;
color: var(--text);
}
.hero-headline .accent { color: var(--accent); }
.hero-sub {
max-width: 60ch;
font-size: 1.0625rem;
line-height: 1.55;
color: var(--text-secondary);
margin: 0 0 2rem;
}
.hero-sub strong { color: var(--text); font-weight: 600; }
.hero-grid {
display: grid;
grid-template-columns: 1.15fr 1fr;
gap: 2.5rem;
align-items: start;
}
@media (max-width: 900px) {
.hero-grid { grid-template-columns: 1fr; gap: 2rem; }
}
/* ---------- CTA cluster ---------- */
.cta-row {
display: flex;
align-items: center;
gap: 0.75rem;
flex-wrap: wrap;
}
.btn {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 10px 18px;
font-family: var(--font-all);
font-size: 12.5px;
font-weight: 600;
letter-spacing: 0.06em;
text-transform: uppercase;
border-radius: var(--radius-sm);
cursor: pointer;
border: 1px solid transparent;
transition: all 0.15s var(--ease-out);
white-space: nowrap;
}
.btn-primary {
background: var(--accent);
color: var(--text-on-accent);
}
.btn-primary:hover {
background: var(--accent-warm);
color: var(--text-on-accent);
}
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
background: transparent;
color: var(--text);
border-color: var(--border-strong);
}
.btn-ghost:hover {
background: var(--surface-hover);
border-color: var(--text-secondary);
color: var(--text);
}
.btn .arrow {
display: inline-block;
transition: transform 0.18s var(--ease-out);
}
.btn:hover .arrow { transform: translateX(3px); }
/* ---------- Code block (terminal panel) ---------- */
.terminal {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
font-family: var(--font-all);
font-size: 13px;
line-height: 1.7;
}
.terminal-head {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0.5rem 0.875rem;
border-bottom: 1px solid var(--border);
background: var(--surface-elevated);
}
.terminal-label {
font-size: 10.5px;
letter-spacing: 0.14em;
text-transform: uppercase;
color: var(--text-secondary);
}
.terminal-copy {
background: transparent;
border: 1px solid var(--border);
color: var(--text-secondary);
font-family: inherit;
font-size: 10.5px;
letter-spacing: 0.08em;
text-transform: uppercase;
padding: 3px 9px;
border-radius: var(--radius-sm);
cursor: pointer;
transition: all 0.15s var(--ease-out);
}
.terminal-copy:hover { color: var(--text); border-color: var(--text-secondary); }
.terminal-copy[data-copied="true"] {
color: var(--color-success);
border-color: rgba(52,211,153,0.4);
}
.terminal-body {
padding: 0.875rem 1.125rem;
overflow-x: auto;
}
.terminal-body pre {
margin: 0;
white-space: pre;
font-family: inherit;
color: var(--text);
}
.prompt { color: var(--text-dim); user-select: none; }
.prompt::after { content: ' '; }
.cmd { color: var(--text); font-weight: 500; }
.arg { color: var(--accent); }
.out-info { color: var(--color-info); }
.out-ok { color: var(--color-success); }
.out-warn { color: var(--color-warning); }
.out-err { color: var(--color-error); }
.out-dim { color: var(--text-dim); }
.comment { color: var(--text-dim); font-style: normal; }
/* Cursor blink at end of last terminal line */
.terminal-cursor::after {
content: '▋';
display: inline-block;
color: var(--accent);
margin-left: 4px;
animation: blink 1s step-end infinite;
}
/* ---------- Hero metrics strip ---------- */
.metrics-strip {
margin-top: 2rem;
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 1px;
background: var(--border);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
}
.metric {
background: var(--surface);
padding: 0.875rem 1rem;
display: flex;
flex-direction: column;
gap: 0.25rem;
}
.metric-value {
font-size: clamp(1.25rem, 2.4vw, 1.75rem);
font-weight: 700;
letter-spacing: -0.02em;
color: var(--text);
font-variant-numeric: tabular-nums;
line-height: 1.1;
}
.metric-value .accent { color: var(--accent); }
.metric-label {
font-size: 10.5px;
letter-spacing: 0.12em;
text-transform: uppercase;
color: var(--text-secondary);
}
@media (max-width: 720px) {
.metrics-strip { grid-template-columns: repeat(2, 1fr); }
}
/* ---------- Section primitive ---------- */
section.block {
padding: 4.5rem 0;
border-bottom: 1px solid var(--border);
}
.section-head {
display: flex;
align-items: baseline;
justify-content: space-between;
gap: 1.5rem;
margin-bottom: 2rem;
flex-wrap: wrap;
}
.section-eyebrow {
font-size: 10.5px;
font-weight: 600;
letter-spacing: 0.18em;
text-transform: uppercase;
color: var(--accent);
}
.section-title {
font-family: var(--font-all);
font-weight: 700;
font-size: clamp(1.5rem, 3.2vw, 2.25rem);
letter-spacing: -0.025em;
line-height: 1.1;
margin: 0.5rem 0 0;
color: var(--text);
max-width: 32ch;
}
.section-meta {
font-size: 12px;
color: var(--text-dim);
letter-spacing: 0.04em;
text-align: right;
}
/* ---------- 3-step setup ---------- */
.steps {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1px;
background: var(--border);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
}
@media (max-width: 900px) {
.steps { grid-template-columns: 1fr; }
}
.step {
background: var(--surface);
padding: 1.5rem 1.5rem 1.75rem;
display: flex;
flex-direction: column;
gap: 1rem;
position: relative;
}
.step-num {
display: inline-flex;
align-items: center;
gap: 0.625rem;
font-size: 10.5px;
letter-spacing: 0.14em;
text-transform: uppercase;
color: var(--text-secondary);
}
.step-num::before {
content: '';
display: inline-block;
width: 22px;
height: 22px;
border: 1px solid var(--accent-border);
border-radius: var(--radius-sm);
background: var(--accent-dim);
color: var(--accent);
text-align: center;
line-height: 20px;
font-size: 11px;
font-weight: 700;
}
.step:nth-child(1) .step-num::before { content: '01'; }
.step:nth-child(2) .step-num::before { content: '02'; }
.step:nth-child(3) .step-num::before { content: '03'; }
.step-title {
font-size: 1rem;
font-weight: 600;
color: var(--text);
margin: 0;
letter-spacing: -0.01em;
}
.step-desc {
font-size: 13px;
color: var(--text-secondary);
line-height: 1.55;
margin: 0;
}
.step .terminal {
margin-top: auto;
}
/* ---------- Bento benefits grid ---------- */
.bento {
display: grid;
grid-template-columns: 2fr 1fr 1fr;
grid-auto-rows: minmax(0, auto);
gap: 1px;
background: var(--border);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
}
.bento-cell {
background: var(--surface);
padding: 1.5rem 1.5rem;
display: flex;
flex-direction: column;
gap: 0.75rem;
min-height: 160px;
}
.bento-cell.span-2 { grid-column: span 2; }
.bento-cell.span-3 { grid-column: span 3; }
.bento-cell h3 {
margin: 0;
font-size: 1.125rem;
font-weight: 600;
letter-spacing: -0.015em;
color: var(--text);
}
.bento-cell p {
margin: 0;
font-size: 13px;
color: var(--text-secondary);
line-height: 1.6;
}
.bento-cell .label {
font-size: 10.5px;
letter-spacing: 0.14em;
text-transform: uppercase;
color: var(--accent);
}
.bento-cell .big-number {
font-size: clamp(2rem, 4vw, 3rem);
font-weight: 700;
line-height: 1;
letter-spacing: -0.03em;
color: var(--text);
font-variant-numeric: tabular-nums;
}
.bento-cell .big-number .accent { color: var(--accent); }
@media (max-width: 900px) {
.bento { grid-template-columns: 1fr; }
.bento-cell.span-2,
.bento-cell.span-3 { grid-column: span 1; }
}
/* Inline graph (mini) — pure CSS dot field for hero bento cell */
.mini-graph {
position: relative;
width: 100%;
height: 140px;
margin-top: auto;
overflow: hidden;
}
.mini-graph svg { display: block; width: 100%; height: 100%; }
/* ---------- IDE matrix ---------- */
.ide-matrix {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 1px;
background: var(--border);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
}
@media (max-width: 720px) {
.ide-matrix { grid-template-columns: repeat(2, 1fr); }
}
.ide {
background: var(--surface);
padding: 1rem 1.125rem;
display: flex;
flex-direction: column;
gap: 0.375rem;
transition: background 0.15s var(--ease-out);
}
.ide:hover { background: var(--surface-elevated); }
.ide-name {
font-size: 13px;
font-weight: 600;
color: var(--text);
letter-spacing: -0.01em;
}
.ide-cmd {
font-size: 11.5px;
color: var(--text-secondary);
}
.ide-cmd .accent { color: var(--accent); }
.ide-status {
margin-top: 0.375rem;
font-size: 10.5px;
letter-spacing: 0.1em;
text-transform: uppercase;
color: var(--color-success);
display: inline-flex;
align-items: center;
gap: 6px;
}
.ide-status::before {
content: '';
width: 5px;
height: 5px;
border-radius: 50%;
background: var(--color-success);
box-shadow: 0 0 4px rgba(52,211,153,0.5);
}
/* ---------- FAQ ---------- */
.faq {
display: grid;
grid-template-columns: 1fr;
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
background: var(--surface);
}
.faq details {
border-top: 1px solid var(--border);
}
.faq details:first-child { border-top: none; }
.faq summary {
list-style: none;
cursor: pointer;
padding: 1.125rem 1.375rem;
display: flex;
align-items: center;
justify-content: space-between;
gap: 1rem;
font-size: 14px;
font-weight: 600;
color: var(--text);
transition: background 0.15s var(--ease-out);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
content: '+';
font-size: 18px;
color: var(--accent);
transition: transform 0.18s var(--ease-out);
flex-shrink: 0;
}
.faq details[open] summary::after {
content: '−';
}
.faq summary:hover { background: var(--surface-elevated); }
.faq-body {
padding: 0 1.375rem 1.25rem;
font-size: 13.5px;
color: var(--text-secondary);
line-height: 1.65;
}
.faq-body code {
background: var(--bg);
padding: 1px 6px;
border-radius: 3px;
border: 1px solid var(--border);
color: var(--accent);
font-size: 12.5px;
}
/* ---------- Comparison table ---------- */
.compare {
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
background: var(--surface);
}
.compare table {
width: 100%;
border-collapse: collapse;
font-size: 13px;
}
.compare thead th {
text-align: left;
padding: 0.875rem 1.125rem;
font-weight: 600;
font-size: 11px;
letter-spacing: 0.12em;
text-transform: uppercase;
color: var(--text-secondary);
background: var(--surface-elevated);
border-bottom: 1px solid var(--border);
}
.compare tbody td {
padding: 0.875rem 1.125rem;
border-top: 1px solid var(--border);
color: var(--text);
vertical-align: top;
}
.compare tbody tr:hover td { background: var(--surface-hover); }
.compare td.label {
font-weight: 600;
color: var(--text);
width: 30%;
}
.compare td.col-engram {
color: var(--accent);
font-weight: 500;
}
.compare td.col-other {
color: var(--text-secondary);
}
/* ---------- Footer ---------- */
footer {
padding: 3rem 0 4rem;
color: var(--text-dim);
font-size: 12px;
}
footer .row {
display: flex;
justify-content: space-between;
flex-wrap: wrap;
gap: 1rem 2rem;
align-items: baseline;
}
footer a {
color: var(--text-secondary);
margin-right: 1.25rem;
}
footer a:hover { color: var(--accent); }
/* ---------- Reveal motion — progressive enhancement ----------
Content is VISIBLE by default so the page renders correctly for
headless screenshotters (OG previews, Twitter cards), crawlers,
and users with JS disabled. The IntersectionObserver upgrades the
entrance with a slide+fade when JS is active. `.js-ready` on <html>
is toggled by the script below. */
.reveal {
opacity: 1;
transform: translateY(0);
transition: opacity 0.55s var(--ease-out), transform 0.55s var(--ease-out);
}
html.js-ready .reveal {
opacity: 0;
transform: translateY(14px);
}
html.js-ready .reveal.visible {
opacity: 1;
transform: translateY(0);
}
@keyframes blink {
0%, 100% { opacity: 1; }
50% { opacity: 0; }
}
@keyframes pulse-status {
0%, 100% { opacity: 1; box-shadow: 0 0 6px rgba(245,158,11,0.6); }
50% { opacity: 0.55; box-shadow: 0 0 2px rgba(245,158,11,0.3); }
}
@media (prefers-reduced-motion: reduce) {
.reveal { opacity: 1 !important; transition: none !important; }
.terminal-cursor::after { animation: none; opacity: 1; }
.hero-pill::before { animation: none; }
* { animation: none !important; transition: none !important; }
}
</style>
</head>
<body>
<!-- ================== NAV ================== -->
<header class="nav">
<div class="container nav-row">
<a class="wordmark" href="/" aria-label="engram home">
eng<span class="accent">r</span><span class="accent">a</span>m
</a>
<ul class="nav-links">
<li><a class="nav-link" href="#coming-next">v4.0</a></li>
<li><a class="nav-link" href="#whats-new">v3.4</a></li>
<li><a class="nav-link" href="#install">Install</a></li>
<li><a class="nav-link" href="#how">How it works</a></li>
<li><a class="nav-link" href="#benefits">Benefits</a></li>
<li><a class="nav-link" href="#plugins-multiply">Plugins</a></li>
<li><a class="nav-link" href="#ides">IDEs</a></li>
<li><a class="nav-link" href="#faq">FAQ</a></li>
<li class="nav-cta">
<a class="nav-link" href="https://github.com/NickCirv/engram" style="color:var(--accent);">GitHub →</a>
</li>
</ul>
</div>
</header>
<!-- ================== HERO ================== -->
<section class="hero">
<div class="container">
<div class="hero-grid">
<div>
<span class="hero-pill">● v4.0 "Skill Pack" · shipped 2026-05-18 · bi-temporal mistakes · 1025 tests</span>
<h1 class="hero-headline reveal">
your AI agent<br>
<span class="accent">forgets everything.</span><br>
fix it in 30 seconds.
</h1>
<p class="hero-sub reveal">
<strong>engramx</strong> is the <strong>context spine</strong> for AI coding agents.
It intercepts every <code style="color:var(--accent);">Read</code>, <code style="color:var(--accent);">Edit</code>, <code style="color:var(--accent);">Write</code>, and <code style="color:var(--accent);">cat</code>
your agent makes and replaces it with a pre-assembled context packet —
structure, decisions, git history, library docs, known mistakes, and
now <strong>any MCP server you plug in</strong> —
in a single ~500-token response.
The agent gets what it needs without re-reading the file.
</p>
<div class="cta-row reveal">
<a class="btn btn-primary" href="#install">
Install in 30s <span class="arrow">→</span>
</a>
<a class="btn btn-ghost" href="https://github.com/NickCirv/engram">
View on GitHub
</a>
</div>
<div class="metrics-strip reveal" role="list" aria-label="engramx metrics">
<div class="metric" role="listitem">
<span class="metric-value"><span class="accent">89.1</span>%</span>
<span class="metric-label">Measured savings · 87 real files</span>
</div>
<div class="metric" role="listitem">
<span class="metric-value"><span class="accent">$0</span></span>
<span class="metric-label">LLM cost · 0 cloud</span>
</div>
<div class="metric" role="listitem">
<span class="metric-value">9 + n</span>
<span class="metric-label">Built-ins · any MCP as plugin</span>
</div>
<div class="metric" role="listitem">
<span class="metric-value">876</span>
<span class="metric-label">Tests passing · CI green</span>
</div>
</div>
</div>
<!-- Hero terminal -->
<div class="reveal">
<div class="terminal" role="region" aria-label="Quickstart commands">
<div class="terminal-head">
<span class="terminal-label">~ · zsh</span>
<button class="terminal-copy" type="button" data-copy="install-quick">Copy</button>
</div>
<div class="terminal-body">
<pre id="install-quick"><span class="prompt">$</span><span class="cmd">npm install -g engramx</span>
<span class="prompt">$</span><span class="cmd">cd</span> <span class="arg">~/my-project</span>
<span class="prompt">$</span><span class="cmd">engram setup</span>
<span class="out-dim">↳</span> <span class="out-info">init → indexed 451 nodes, 1005 edges (10 langs)</span>
<span class="out-dim">↳</span> <span class="out-info">install-hook → 7 hooks wired</span>
<span class="out-dim">↳</span> <span class="out-info">adapters → Claude Code detected · AGENTS.md + CLAUDE.md generated</span>
<span class="out-dim">↳</span> <span class="out-info">doctor → everything green</span>
<span class="out-ok">━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━</span>
<span class="out-ok">✅</span> next Claude Code session has memory.
<span class="out-dim">→</span> optional: <span class="cmd">engram plugin install</span> <span class="arg">serena</span> for +LSP symbols<span class="terminal-cursor"></span></pre>
</div>
</div>
<p style="margin: 1rem 0 0; font-size: 11.5px; color: var(--text-dim); letter-spacing: 0.04em;">
Works with <a href="#ides" style="color:var(--text-secondary);"><strong style="color:var(--text);">Claude Code</strong></a>
· Cursor · Codex · Aider · Continue · Zed · Windsurf · Neovim · Emacs
</p>
</div>
</div>
</div>
</section>
<!-- ================== WHAT SHIPPED IN v4.0 ================== -->
<section class="block" id="coming-next" style="border-top: 1px solid var(--border);">
<div class="container">
<div class="section-head">
<div>
<div class="section-eyebrow">// v4.0 · shipped 2026-05-18</div>
<h2 class="section-title">Skill Pack: engram's memory becomes active.</h2>
</div>
<div class="section-meta">1025 tests passing · auto-install on init · permissive by default</div>
</div>
<p style="color: var(--text-secondary); max-width: 720px; margin-bottom: 2rem;">
v3.x captured mistakes when asked. v4.0 surfaces past corrections <em>before</em> the agent
makes the edit. Schema v9 encodes four bi-temporal fields per mistake. A new git-revert
miner auto-populates them. The Sentinel hook installs by default and fires permissively
out of the box. Same engram, same graph, same 89.1% reduction — now plus the catch-it-before-it-recurs
layer.
</p>
<div class="v3-grid">
<article class="v3-card">
<div class="v3-card-tag">bi-temporal</div>
<h3 class="v3-card-title"><span class="accent">◆</span> Bi-temporal mistakes</h3>
<p class="v3-card-body">
Schema v9 adds <code>then_believed</code>, <code>found_false_at</code>, <code>truth_now</code>,
and <code>applies_to</code> to every mistake. The PreToolUse hook injects this structured
block into Claude's context window before risky edits. The agent reads <em>what you used
to believe</em> vs <em>what's now true</em> and adapts.
</p>
</article>
<article class="v3-card">
<div class="v3-card-tag">auto-capture</div>
<h3 class="v3-card-title"><span class="accent">◇</span> git-revert miner</h3>
<p class="v3-card-body">
Fresh <code>engram init</code> on any git-active repo produces a non-empty mistakes table
within seconds. The miner walks revert pairs, extracts the original belief from the
reverted commit's subject, and writes a bi-temporal mistake node. No manual <code>engram
learn</code> seeding required.
</p>
</article>
<article class="v3-card">
<div class="v3-card-tag">marketplace</div>
<h3 class="v3-card-title"><span class="accent">★</span> engram-skill-pack</h3>
<p class="v3-card-body">
Sibling repo ships engram as Claude Code Skills. Three active skills today
(<code>engram-mistakes</code>, <code>engram-query</code>, <code>engram-gods</code>),
full five-skill surface in v0.3.0. <code>npx @anthropic-ai/claude-code add
nickcirv/engram-skill-pack</code> — one command to install.
</p>
</article>
</div>