> For the complete documentation index, see [llms.txt](https://vayl.gitbook.io/vayl-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://vayl.gitbook.io/vayl-docs/documentation/why-vayl.md).

# Why Vayl

Most agent memory *accumulates* — it saves every fact and later hands your agent a value that used to be true. Vayl **reconciles** instead: a new value supersedes the old, a removal actually retracts, and history stays queryable and auditable.

These pages make the case — the guarantee, why the common approach fails, and who needs it most.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h4><i class="fa-circle-check" style="color:$primary;">:circle-check:</i> Memory that can't be wrong</h4></td><td>The guarantee: one live value per fact, removal is real, the past stays provable.</td><td><a href="/pages/M6wkujhPwvua64MrnexQ">/pages/M6wkujhPwvua64MrnexQ</a></td></tr><tr><td><h4><i class="fa-clock-rotate-left" style="color:$primary;">:clock-rotate-left:</i> Why memory goes stale</h4></td><td>The root cause — append vs. reconcile — and how to fix it today.</td><td><a href="/pages/JBgX4JjZzX9NfXaWCROd">/pages/JBgX4JjZzX9NfXaWCROd</a></td></tr><tr><td><h4><i class="fa-shield-halved" style="color:$primary;">:shield-halved:</i> For high-stakes agents</h4></td><td>Correct, gated, and auditable — for clinical, financial, and legal agents.</td><td><a href="/pages/itoO8D9NSoQIA88QTCnq">/pages/itoO8D9NSoQIA88QTCnq</a></td></tr></tbody></table>


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# Agent Instructions
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