{"uid":"cap_3soglwkrckMawiHZ9Z0zw","slug":"agent-rest-stop-fallback-url-lookup-afe72bcb","name":"Agent Rest Stop – Fallback URL Lookup","description":"A sibling tool when health is old.","url":"https://agent-gas-station.agent-gas-station.workers.dev/v1/FallbackUrl?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"tool_id":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mre5MGFLLEV3CyHomufXw","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the fallback URL for a given tool when its primary health check is stale or failing.","exampleAgentPrompt":"The health check for tool 'price-oracle-v2' is stale — can you look up its fallback URL so I know where to route requests instead?","exampleUseCases":[{"title":"Reroute unhealthy tool traffic","prompt":"Tool 'swap-router-main' is returning old health data — fetch its fallback URL so I can redirect calls to the backup endpoint."},{"title":"Agent pipeline resilience check","prompt":"Before my workflow runs, grab the fallback URL for tool 'venue-lookup' in case its primary goes down mid-run."},{"title":"Incident response URL resolution","prompt":"We're seeing failures on tool 'stablecoin-pricer' — what's the registered fallback URL for it so I can reroute immediately?"}],"resultDescription":"Returns the fallback URL associated with the specified tool ID, to be used when the tool's primary health status is outdated or unavailable.","failureModes":["Unknown tool_id returns an empty or null URL","Stale or missing fallback registration returns a 404 or empty response","Invalid input schema (missing tool_id) returns a 400 error","Network timeout if the worker is under load"],"whenToPreferThis":"Use this endpoint when a tool's health status is stale and you need to know which fallback URL to route requests to. Prefer this over a general health check endpoint when you specifically need the redirect/fallback destination rather than a health status summary.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:38.600Z","isFirstParty":false,"canonicalSlug":"agent-rest-stop-fallback-url-lookup-afe72bcb"}