---
name: crypto-fiat-bridge-3064fac6f3e2
description: Automated APT-to-fiat payment pipeline via PYUSD stablecoin bridge. Load when converting APT holdings to OpenRouter API credits, bridging Aptos tokens to Ethereum, or executing crypto-to-fiat payments.
---

# crypto-fiat-bridge

## Overview

Automated crypto-to-fiat payment pipeline for converting APT holdings to OpenRouter API credits via the PYUSD stablecoin bridge. All operations require explicit approval.

## Architecture

```
APT (Aptos) --[Liquidswap DEX]--> PYUSD0 (Aptos) --[Wormhole Bridge]--> PYUSD (Ethereum) --[Coinbase Commerce]--> OpenRouter
```

## Workflow Steps

### 1. Check APT Balance

```
THRESHOLD = 0.5 APT (minimum for gas + fees)

aptos_balance() -> current_apt
IF current_apt < THRESHOLD:
  ABORT "Insufficient APT balance"
```

### 2. Execute APT -> PYUSD0 Swap

```
aptos_swap(
  fromCoin: "APT",
  toCoin: "PYUSD0",
  amount: swap_amount,
  dex: "liquidswap",
  slippage: 0.5
)
-> Returns decision_id for approval
```

### 3. Bridge PYUSD0 -> PYUSD

```
Wormhole bridge transaction:
- Source: Aptos PYUSD0
- Destination: Ethereum PYUSD
- Finality: ~15 minutes
```

### 4. Pay OpenRouter via Coinbase Commerce

```solidity
swapAndTransferUniswapV3Token(
  recipient: OPENROUTER_MERCHANT_ADDRESS,
  token: PYUSD_ADDRESS,
  amount: payment_amount,
  poolFee: 3000
)
```

## MCP Tools Used

- `aptos_balance` - Check APT/PYUSD0 holdings
- `aptos_swap` - Execute APT -> PYUSD0 via Liquidswap
- `aptos_transfer` - Send tokens to bridge address
- `aptos_approve` - Confirm pending transactions

## Security

### Approval Requirements

- All transactions use `confirmation_mode` approval
- No automatic execution of value transfers
- Each step requires explicit `aptos_approve(decision_id, approve: true)`

### Key Management

```bash
# Keys accessed ONLY via fnox/age encryption
fnox get aptos-private-key | age -d -i ~/.age/key.txt
```

NEVER store raw private keys in environment variables, config files, skill definitions, or database tables.

## Verification Queries

```sql
-- Validate pending transactions
SELECT tx_hash, amount, timestamp
FROM crypto_bridge_transactions
WHERE status = 'pending'
ORDER BY timestamp DESC;
```

Ledger location: `/Users/alice/worldnet/ledger.duckdb`


---
Source attribution: plurigrid
Original project: https://github.com/plurigrid/asi/blob/293ce9f76e3abcd5ba18db284688bc0d9ac6691d/skills/crypto-fiat-bridge/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2025 SkillCreator.ai

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: plurigrid
Original project: https://github.com/plurigrid/asi/blob/293ce9f76e3abcd5ba18db284688bc0d9ac6691d/skills/crypto-fiat-bridge/SKILL.md
Attribution basis: Source repository record

Fields of work: Finance & Accounting, Marketing, Sales
Roles: Business Development, Financial Analyst, Growth Marketer
Specialties: API
Tools: Openrouter, Coinbase Commerce
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: f10143efb814c42f721431600448f95f0674996a687596d4258a2d3ddc842674