AgentCredit — Flash Microloans for AI Agents#

Description#

AgentCredit provides instant USDC microloans ($1-$5) for AI agents on Base mainnet. When your agent needs USDC for any purpose — x402 payments, API calls, on-chain operations, or agent-to-agent transfers — AgentCredit disburses funds to your wallet in under 2 seconds.

Security & Trust#

Credentials & Signing#

This skill requires EIP-191 wallet signatures for write operations (register, request loan). Your agent must have access to wallet signing capabilities.

Key points:

• This skill does NOT store or request private keys
• Direct loan requests (REST API / MCP) require an EIP-191 signature
• In facilitator mode, credit is extended transparently during x402 settlement — no additional signature needed (the x402 payment itself is cryptographic proof)
• Read operations (check_credit, list loans) require NO signatures

On-Chain Addresses#

• Pool wallet: 0x510a64F194CB6196d34C93717d88f13aCF0C979f ( BaseScan)
• USDC contract: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 ( BaseScan)
• Network: Base mainnet (CAIP-2: eip155:8453)

How Facilitator Mode Works#

AgentCredit operates as an x402 facilitator. When your agent encounters an x402 payment it can't cover, AgentCredit transparently extends a microloan to top up the wallet and complete the payment — no interruption, no human in the loop. The agent repays from subsequent revenue.

This is the core use case: autonomous agents should never fail a payment because of a temporary liquidity gap. Built-in safeguards prevent abuse:

• Max $5 per loan, max $10 total exposure, max 3 outstanding loans
• Agents must register (one-time, with EIP-191 signature) before credit is available
• First 100 x402 settlements are free with no registration
• Overdue loans block further facilitator settlements until repaid

Limits & Caps#

ConstraintValueMax single loan$5 USDCMax outstanding3 loans per walletMax total exposure$10 per walletPool cap$1,000 USDC

Source & Links#

• Source: github.com/spekn-ai/agentcredit
• API: https://agentlending.spekn.com
• Operator: Spekn
• Status: MVP / experimental — use test amounts only

Capabilities#

• Check credit: Query available credit balance and tier for any registered wallet
• Request loan: Borrow $1-$5 USDC instantly, disbursed on Base in ~2 seconds
• Repay loan: Repay via x402, direct USDC transfer, or on-chain tx confirmation
• x402 facilitator: Use as your x402 facilitator URL — credit is extended transparently when your balance is short

Integration#

As x402 Facilitator (recommended — fully autonomous)#

typescript

import { wrapFetch } from '@x402/fetch';
const fetchWith402 = wrapFetch(fetch, walletClient, {
  facilitatorUrl: 'https://agentlending.spekn.com',
});

First 100 settlements free. Register for credit to unlock autonomous borrowing when your balance is short.

As MCP Server#

json

{
  "mcpServers": {
    "agentcredit": {
      "type": "streamable-http",
      "url": "https://agentlending.spekn.com/mcp"
    }
  }
}

Tools: check_credit, request_loan, repay_loan

As REST API#

text

POST /agents/register        — Register wallet (EIP-191 signature required)
GET  /agents/:wallet/credit  — Check credit (no auth)
GET  /agents/:wallet/loans   — List loans (no auth)
POST /loans/request          — Request loan (EIP-191 signature required)
GET  /loans/:id/pay          — Repay via x402 (returns 402)

Full docs: https://agentlending.spekn.com/llms-full.txt

Fee Model#

Loans are designed for fast repayment — borrow, use, repay within hours. The exponential curve makes early repayment near-free and penalizes holding.

Timing$1 loan cost (BB tier)Effective rate1 hour~$1.0050.5%4 hours (target term)$1.0060.6%24 hours$1.022%7 days (penalty zone)~$2.50150%

• Origination fee: $0.005 flat per loan
• Interest: exponential curve — the rate accelerates over time by design, to incentivize repayment within the 1-4 hour target window
• Why exponential? Flat rates would make it rational to hold loans indefinitely. The steep 7-day cost exists as a deterrent, not a revenue model — agents that repay promptly (as intended) pay fractions of a cent
• Higher tiers (BBB, AA+) get lower rates as a reward for good repayment history

Authentication#

Write operations require EIP-191 signatures with server-issued nonces for replay protection:

1. Get a nonce: GET /auth/nonce?wallet=<addr>&action=register|request_loan — returns a single-use nonce valid for 5 minutes

2. Sign the message (include the nonce):

   • Register: sign AgentCredit:register:<wallet_lowercase>:<nonce>
   • Request loan: sign AgentCredit:request_loan:<wallet_lowercase>:<amountUsdc>:<nonce>

3. Send request with signature and nonce in the body

Read operations and repayments do not require signatures.

Discovery#

• x402: https://agentlending.spekn.com/.well-known/x402.json
• A2A Agent Card: https://agentlending.spekn.com/.well-known/agent-card.json
• MCP: https://agentlending.spekn.com/mcp
• llms.txt: https://agentlending.spekn.com/llms.txt