{"version":1,"description":"Barker — the stablecoin yield primitive for the agent economy. Real-time stablecoin yield data, an AI yield advisor, risk signals, and non-custodial deposit/redeem execution for AI agents. Pay per call via x402 — no API key, no signup.","instructions":"Tools cost $0.001–$0.05 per call. Send a GET request to a tool path with its query parameters (or POST the same arguments as a flat JSON body); arguments are validated first, so an invalid call gets a 4xx with the fix and no challenge. On the HTTP 402 challenge, settle the x402 payment and retry. Settlement is USDC on Base, Ethereum, Polygon and Arbitrum, or USDT0 on X Layer. tools/list and discovery are free. The same tools are also served over MCP (streamable-http) at /mcp. Execution tools return an unsigned, ready-to-sign transaction — Barker never broadcasts and never holds funds; the caller's own wallet signs.","paymentProtocols":["x402"],"resources":["GET /barker_defi_vaults","GET /barker_market_overview","GET /barker_market_trend","GET /barker_yield_advisor","GET /barker_pool_detail","GET /barker_pool_history","GET /barker_pool_search","GET /barker_crosschain_routes","GET /barker_executable_pools","GET /barker_execution_quote","GET /barker_vault_position","GET /barker_paper_hedge_farm"],"ownershipProofs":[]}