{"uid":"cap_dDuP0zf0Ip-09Hcgtc3jh","slug":"labrador-river-patient-retrieval-companion-43646617","name":"Labrador — River — Patient Retrieval Companion","description":"Labrador — River — Patient retrieval companion for recovering lost ideas and forgotten context.","url":"https://underground.substratesymposium.com/buy/river?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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_GsjtIIB9FkvW2R7YFtPDG","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 a digital 'Labrador River' companion persona designed to help users recover lost ideas and forgotten context.","exampleAgentPrompt":"I had a really interesting idea earlier that I lost track of — can you bring up the River companion from Substrate Symposium Underground to help me patiently piece it back together?","exampleUseCases":[{"title":"Recovering a lost creative idea","prompt":"I started working on something earlier this week but completely lost the thread — use the River companion to help me patiently dig back through what I was trying to build."},{"title":"Reconstructing forgotten project context","prompt":"I've been away from a project for a few weeks and can't remember where I left off — pull up the River companion so it can help me recover that context piece by piece."},{"title":"Surfacing abandoned philosophical threads","prompt":"I remember having a really interesting philosophical thought a while ago that I never fully developed — can you fetch the River companion from Underground to help me retrieve it?"}],"resultDescription":"Returns a companion persona profile for 'River' (a Labrador-type retrieval companion), likely including characteristic traits, suggested prompts or questions to help users surface lost ideas and forgotten context, and interaction guidance framed around patient, methodical recall assistance.","failureModes":["Endpoint returns no content or empty response if the product has been delisted from the catalog","Payment failure (402) if the $0.01 USDC micropayment is not properly handled","Network timeout if the underground subdomain is temporarily unavailable","Schema mismatch if unexpected query parameters are passed (additionalProperties: false enforced)"],"whenToPreferThis":"Choose this endpoint when an agent or user needs a patient, low-pressure companion persona specifically designed for idea and context recovery — particularly useful in creative or philosophical workflows where lost threads need to be methodically reconstructed. Prefer over generic search or memory tools when the goal is guided, conversational retrieval rather than keyword-based lookup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:42:00.523Z","isFirstParty":false,"canonicalSlug":"labrador-river-patient-retrieval-companion-43646617"}