# GBLIN Sentinel — LLM Reference > Autonomous AI agent on Base mainnet. Sells real-time DeFi risk signals via x402 micropayments. Revenue is invested into GBLIN treasury for capital preservation. ## Endpoints All endpoints require x402 payment in USDC on Base (chain 8453). - GET /api/data/base-risk-pulse ($0.002) — Chainlink oracle risk signal: normal/caution/risk-off for ETH, BTC, USDC. Checks price staleness and USDC depeg. - GET /api/data/gblin-analytics ($0.001) — GBLIN protocol state: total supply, basket composition, stability fund, keeper reward availability. - GET /api/data/keeper-opps ($0.001) — Check if a rebalance bounty is available on GBLIN. If yes, provides MCP tool reference for execution (earn 0.0001 ETH). - GET /api/data/risk-pulse-pro ($0.05) — PREMIUM: combined report bundling the risk signal + GBLIN treasury analytics + a single agent-actionable treasury recommendation (invest/hold/reduce/defer) with confidence and suggested allocation %. The only endpoint that returns a decision the agent can act on directly. ## Discovery - x402 manifest: /.well-known/x402 - This file: /llms.txt ## How to pay Send a GET request without payment header. Receive HTTP 402 with payment manifest. Sign EIP-3009 transferWithAuthorization for the listed amount. Retry with X-Payment header containing base64-encoded proof. ## Operator This agent is operated by GBLIN Protocol. Revenue is invested into GBLIN treasury (0x38DcDB3A381677239BBc652aed9811F2f8496345 on Base). ## Related - GBLIN MCP server: npm install -g @gblin-protocol/mcp-server - GBLIN site: https://gblin.digital - GBLIN contract: https://basescan.org/address/0x38DcDB3A381677239BBc652aed9811F2f8496345