# Yault AESP (npm · @yault/aesp)

Crypto payments for the agent economy — policy-gated vault operations under human control

- Trust score: 62/100 (medium)
- Change this week: +22
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@yault/aesp`: 62/100 (this document), [markdown](https://verifymcp.io/servers/xyz-yault-aesp/yault-aesp.md), [page](https://verifymcp.io/servers/xyz-yault-aesp/yault-aesp)

## Channel facts

- Registry: `npm`
- Package: `@yault/aesp`
- Version: `0.2.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 86/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (94 of 98), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (94 of 98), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 19/100
  - Repository check failed: the declared repository URL redirects; it must resolve directly.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (Apache-2.0).
  - Actively maintained (last published 143 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 70/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 411 tokens (~58/item across 7 items; 7 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add xyz-yault-aesp -- npx -y @yault/aesp
```

### Codex

```bash
codex mcp add xyz-yault-aesp -- npx -y @yault/aesp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "xyz-yault-aesp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@yault/aesp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add xyz-yault-aesp --command npx --arg -y --arg @yault/aesp
```

### Hermes

```yaml
mcp_servers:
  xyz-yault-aesp:
    command: "npx"
    args: ["-y", "@yault/aesp"]
```

### Other

```json
{
  "mcpServers": {
    "xyz-yault-aesp": {
      "command": "npx",
      "args": [
        "-y",
        "@yault/aesp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 62, +3)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-02 (score 59, +35)

- [security regression] Provenance: fail → unverified
- [security regression] Install scripts: pass → unverified
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional regression] License: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Maintenance: pass → unverified
- [functional improvement] Schema quality: unverified → good
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional] Licence: Apache-2.0

### 2026-08-01 (score 24, +8)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [functional improvement] License: unverified → pass
- [functional improvement] Maintenance: unverified → pass
- [functional] Licence: Apache-2.0

### 2026-07-31 (score 16, −2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 18, −22)

- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-27 (score 40)

First indexed and scored.

## MCP tools (7)

### `yault_check_balance` (~38 tokens)

Check the vault balance for a wallet address

Input parameters:

- `address` (string, required): Wallet address (hex, with or without 0x prefix)

### `yault_deposit` (~67 tokens)

Deposit assets into a Yault ERC-4626 vault for yield generation

Input parameters:

- `address` (string, required): Agent wallet address (must match the API key owner)
- `amount` (string, required): Amount to deposit in underlying asset units (e.g., "100.5" USDC)

### `yault_redeem` (~63 tokens)

Redeem shares from a Yault vault to get underlying assets back

Input parameters:

- `address` (string, required): Agent wallet address (must match the API key owner)
- `shares` (string, required): Number of vault shares to redeem (use "max" to redeem all)

### `yault_transfer` (~88 tokens)

Transfer vault shares from one account to another (must be parent→sub-account)

Input parameters:

- `amount` (string, required): Amount to transfer in underlying asset units
- `currency` (string): Currency (default: "USDC")
- `from_address` (string, required): Sender wallet address (must match API key owner)
- `to_address` (string, required): Recipient wallet address (must be an active sub-account)

### `yault_check_authorization` (~27 tokens)

Check agent authorization status: operator address, on-chain allowances, and chain config

### `yault_get_balances` (~34 tokens)

Get comprehensive balance breakdown including vault shares, underlying assets, and yield

Input parameters:

- `address` (string, required): Wallet address

### `yault_send_payment` (~94 tokens)

Send tokens from a wallet to an arbitrary recipient address (direct ERC-20 transfer)

Input parameters:

- `amount` (string, required): Amount to send in underlying asset units (e.g., "0.1" WETH)
- `from_address` (string, required): Sender wallet address (must match API key owner)
- `memo` (string): Optional memo/note for the payment
- `to_address` (string, required): Recipient wallet address

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/xyz-yault-aesp/yault-aesp#diagnostics

## Score history

- 2026-08-03: 62
- 2026-08-02: 59
- 2026-08-01: 24
- 2026-07-31: 16
- 2026-07-30: 18
- 2026-07-28: 40
- 2026-07-27: 40

## Links

- npm package: https://www.npmjs.com/package/@yault/aesp
- Socket report: https://socket.dev/npm/package/@yault/aesp
- Website: https://yault.xyz/
- Changelog RSS feed: https://verifymcp.io/servers/xyz-yault-aesp/yault-aesp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/xyz-yault-aesp/yault-aesp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/xyz-yault-aesp/yault-aesp