ClawVault Payments

Security middleware for AI agents handling money. Non-custodial crypto wallets and virtual Visa cards with spending limits, whitelists, and human approval.

ClawVault Agent Skill

You have access to ClawVault, a security middleware for AI agents. ClawVault protects TWO spending channels:

1. Crypto payments - USDC transfers on Base and Solana blockchains
2. Agent Card - Virtual Visa card for any merchant worldwide (SaaS, APIs, cloud, etc.)

Both channels use the same rules engine. Every transaction is validated against user-defined rules. Transactions within rules auto-approve; transactions outside rules require human approval via Telegram or dashboard.

Security Model

• Non-custodial: Your keys never leave your wallet
• Rule-enforced: Spending limits, whitelists, time windows enforced on-chain
• Human-in-the-loop: Anything outside rules requires explicit approval
• Audit trail: All transactions logged and visible in dashboard

API Base URL

text

https://api.clawvault.cc

Authentication

All requests require your API key in the Authorization header:

text

Authorization: Bearer ${CLAWVAULT_API_KEY}

Get your API key at: https://clawvault.cc/agents

---

CRYPTO PAYMENTS (On-Chain)

1. Request a Crypto Payment

When you need to send USDC to a blockchain address:

http

POST /v1/payments
Content-Type: application/json

{
  "amount": "50.00",
  "token": "USDC",
  "recipient": "0x1234567890abcdef1234567890abcdef12345678",
  "chain": "base",
  "reason": "Payment for services rendered",
  "skill": "transfer"
}

Response (Success)

json

{
  "success": true,
  "data": {
    "id": "pi_abc123",
    "status": "pending",
    "expiresAt": "2026-02-27T12:00:00Z"
  }
}

Possible Statuses

• auto_approved - Payment executed immediately (within rules)
• pending - Awaiting human approval via Telegram/dashboard
• denied - Payment was rejected
• expired - Approval window closed (5 minutes)

---

2. Check Before Sending (Dry Run)

Before making a payment, check if it will auto-approve or need manual approval:

http

POST /v1/rules/check
Content-Type: application/json

{
  "amount": "50.00",
  "token": "USDC",
  "recipient": "0x1234...",
  "chain": "base"
}

Response

json

{
  "success": true,
  "data": {
    "allowed": true,
    "autoApprove": false,
    "reason": "Manual mode",
    "remainingBudget": { "daily": 450.00 },
    "remainingTx": { "daily": 46 }
  }
}

If autoApprove: false, tell the user the payment needs their approval.

---

3. Get Vault Status

Check your vault balance and current limits:

http

GET /v1/vault

Response

json

{
  "success": true,
  "data": {
    "chain": "base",
    "balances": [{ "token": "USDC", "balance": "150.00" }],
    "rules": {
      "mode": "manual",
      "perTxLimit": 500,
      "dailyTxMax": 20
    }
  }
}

---

AGENT CARD (Visa Card)

Use the Agent Card when you need to pay for:

• SaaS subscriptions (Vercel, Netlify, etc.)
• API services (OpenAI, Anthropic, Twilio, etc.)
• Cloud compute (AWS, GCP, Azure)
• Any merchant that accepts Visa

4. Request a Card Purchase

http

POST /v1/card/purchase
Content-Type: application/json

{
  "amount": 20.00,
  "currency": "USD",
  "merchant": "OpenAI API",
  "merchant_category": "api_services",
  "reason": "GPT-4 API credits for research task"
}

Response (Approved)

json

{
  "success": true,
  "data": {
    "id": "card_txn_abc123",
    "status": "approved",
    "card_credentials": {
      "number": "4242837419283847",
      "exp_month": 3,
      "exp_year": 2028,
      "cvc": "847"
    },
    "valid_for_seconds": 300
  }
}

Response (Needs Approval)

json

{
  "success": true,
  "data": {
    "id": "card_txn_abc123",
    "status": "pending_approval",
    "reason": "Amount exceeds auto-approve threshold"
  }
}

IMPORTANT: Card credentials are temporary and single-use. Use them immediately at the merchant checkout. Never log or store card credentials.

---

5. Check Card Balance

http

GET /v1/card/balance

Response

json

{
  "success": true,
  "data": {
    "balance": 450.00,
    "currency": "USD",
    "spent_today": 50.00,
    "spent_this_month": 350.00,
    "daily_limit": 500.00,
    "monthly_limit": 5000.00
  }
}

---

6. Check Card Rules

Before making a purchase, check if it's allowed:

http

POST /v1/card/check
Content-Type: application/json

{
  "amount": 20.00,
  "merchant_category": "api_services"
}

Response

json

{
  "success": true,
  "data": {
    "allowed": true,
    "autoApprove": true,
    "reason": "Within limits, allowed category"
  }
}

---

COMMON ENDPOINTS

7. Check Payment/Purchase Status

http

GET /v1/payments/{payment_id}
GET /v1/card/transactions/{transaction_id}

8. List Recent Transactions

http

GET /v1/transactions?limit=10
GET /v1/card/transactions?limit=10

---

DECIDING: CRYPTO vs CARD

Use this logic to decide which channel to use:

Scenario	Use
Paying a blockchain address (0x...)	Crypto (/v1/payments)
Paying for SaaS subscription	Card (/v1/card/purchase)
Paying for API credits	Card (/v1/card/purchase)
Paying for cloud services	Card (/v1/card/purchase)
Paying for any online service	Card (/v1/card/purchase)
Sending money to another person's crypto wallet	Crypto (/v1/payments)
DeFi, staking, token swaps	Crypto (/v1/payments)

Rule of thumb: If it's a blockchain address, use crypto. If it's a company/service, use the card.

---

HUMAN APPROVAL FLOW

When a transaction requires approval:

1. User is notified via Telegram bot or ClawVault dashboard
2. User reviews the transaction details (amount, recipient, reason)
3. User approves or denies with one tap
4. Transaction executes if approved, or is cancelled if denied
5. Approval expires after 5 minutes if no action taken

Always inform the user when approval is required: "This transaction needs your approval. Check your Telegram or ClawVault dashboard."

---

COMMON SCENARIOS

Scenario: User asks to pay for OpenAI API credits

1. Call /v1/card/check to verify it's allowed
2. If allowed, call /v1/card/purchase with merchant="OpenAI API"
3. If status: "approved", use the card credentials at checkout immediately
4. If status: "pending_approval", tell user: "This purchase needs your approval. Check Telegram or ClawVault dashboard."

Scenario: User asks to send USDC to an address

1. Call /v1/rules/check to see if it will auto-approve
2. Call /v1/payments with the recipient address
3. If status: "pending", tell user to approve in Telegram

Scenario: Card purchase denied

Tell the user: "The purchase was denied. Reason: {reason}. Check ClawVault dashboard for details."

Scenario: Insufficient card balance

Tell the user: "Insufficient card balance. Current balance: ${balance}. The card needs to be funded."

---

ERROR HANDLING

Common Errors

Code	Meaning	Action
INVALID_KEY	Bad API key	Check your API key
TIER_LIMIT_EXCEEDED	Monthly limit reached	User needs to upgrade
INSUFFICIENT_BALANCE	Not enough funds	User needs to deposit (crypto) or fund card
RULE_VIOLATION	Outside allowed parameters	Check the reason field
CARD_FROZEN	Card is frozen	User needs to unfreeze in dashboard
MERCHANT_BLOCKED	Merchant category not allowed	Cannot purchase from this merchant
CARD_NOT_ACTIVE	Card not set up	User needs to apply for Agent Card

Error Response Format

json

{
  "success": false,
  "error": {
    "code": "RULE_VIOLATION",
    "message": "Exceeds per-transaction limit of $100"
  }
}

---

SECURITY BEST PRACTICES

1. Never log card credentials - Card numbers, CVCs are sensitive
2. Always check first - Use /v1/rules/check or /v1/card/check before transactions
3. Explain to users - If approval is needed, tell them where to approve
4. Handle pending - Don't assume transactions complete immediately
5. Use card credentials immediately - They expire in 5 minutes
6. Show transaction links - For crypto, link to https://basescan.org/tx/{txHash}

---

SUPPORT

• Dashboard: https://clawvault.cc
• Docs: https://clawvault.cc/docs
• API Status: https://api.clawvault.cc/health
• Source: https://github.com/andrewszk/clawvault-mcp-server