> ## Documentation Index
> Fetch the complete documentation index at: https://docs.heysage.me/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> An AI co-signer and onchain security agent for Squads Protocol V4 multisigs on Solana.

Sage is an autonomous second signer on your [Squads Protocol V4](https://squads.so) multisig vault. It learns how your vault transacts — amounts, recipients, tokens, timing — and screens every pending proposal against that behavioral profile, your policy rules, and external security data before anything lands on-chain.

Safe transactions auto-execute. Borderline ones are surfaced over Telegram for one-tap review. Clearly malicious ones are blocked.

<CardGroup cols="2">
  <Card title="Sage App" icon="shield-check" iconType="duotone" href="/app/overview">
    Sign in, see your vault portfolio, and send gasless transfers screened on every action.
  </Card>

  <Card title="Technology" icon="microchip" iconType="duotone" href="/technology/overview">
    Deep dive into the architecture — Squads V4, sponsored transactions, the risk engine, and the Nanobot agent.
  </Card>

  <Card title="Quickstart" icon="rocket-launch" iconType="duotone" href="/quickstart">
    Run Sage locally — client, server, and agent — in minutes.
  </Card>

  <Card title="API Reference" icon="code" iconType="duotone" href="/api/introduction">
    Integrate with the Sage server API for sponsoring, queuing, screening, and execution.
  </Card>
</CardGroup>

## Why Sage?

Multisigs solve key management, but they don't tell you *whether a proposal is safe to sign*. A co-signer who blindly approves is just a slower single signer. Once a malicious proposal reaches quorum, the funds are gone.

* A drained recipient, a fat-fingered amount, or a freshly-minted honeypot token all look identical to a wallet
* n-of-m signers approve based on trust, not analysis — there is no screening layer between *propose* and *execute*
* Agentic wallets need a co-signer that can reason about risk, not just hold a key

Sage is that co-signer. It holds a member key on your Squads vault with `Execute` permission and refuses to push anything through that fails its checks.

## How It Works

Sage adds an AI co-signer to your Squads vault. Every proposal is scored 0–100 against the vault's learned behavior, your policy rules, and live security feeds before it executes.

| Score | Verdict     | Action                                                         |
| ----- | ----------- | -------------------------------------------------------------- |
| \< 40 | **APPROVE** | Server co-signs and executes the vault transaction immediately |
| 40–70 | **REVIEW**  | Deep analysis + Telegram message with ✅ / ❌ / 🔎 buttons       |
| ≥ 70  | **BLOCK**   | Marked for review with an urgent Telegram alert                |

Thresholds are configurable per vault.

## Built On

| Layer          | Technology                                                                                     |
| -------------- | ---------------------------------------------------------------------------------------------- |
| Chain          | Solana                                                                                         |
| Multisig       | [Squads Protocol V4](https://squads.so)                                                        |
| Auth + wallet  | [Privy](https://privy.io) embedded Solana wallets                                              |
| Security feeds | [GoPlus](https://gopluslabs.io), [Rugcheck](https://rugcheck.xyz), [Zerion](https://zerion.io) |
| Agent          | [Nanobot](https://github.com/nanobot-ai/nanobot) skill pack over Telegram                      |

<Note>
  Sage is fee-sponsored end to end — the server pays rent and fees, so the user never needs SOL to create a vault or send a transfer.
</Note>