{"uid":"cap_Wv6iC0vxMN_FnoKyTBLYS","slug":"dead-drop-key-value-store-put-0a1d75f2","name":"Dead Drop Key-Value Store (Put)","description":"Store a value under a key. Costs $0.002. Values up to 64 KB, kept for ttl_seconds (default 3600, max 604800). The write becomes visible once the payment has settled.","url":"https://dead-drop.chris15118-4cd.workers.dev/mcp?utm_source=zero.xyz#put","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_z9LlAsRgB1uRcjOkHtOI1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Stores a value under a specified key in a dead-drop box, persisted for a configurable TTL, with write visibility after micropayment settlement.","exampleAgentPrompt":"Store the string 'session-token-abc123' under the key 'auth_token' in my personal box ('me'), keeping it for 7200 seconds.","exampleUseCases":[{"title":"Cross-agent secret handoff","prompt":"Write the API key 'sk-live-9xZ...' under the key 'api_key_handoff' in channel box 'agent-relay', and keep it there for 1800 seconds so the other agent can pick it up."},{"title":"Ephemeral config drop for workflow","prompt":"Save this JSON config blob under the key 'pipeline_config_v2' in my personal box for 3600 seconds — I'll have the downstream step read it back shortly."},{"title":"Temporary result parking","prompt":"Drop the text summary I just generated under the key 'summary_result_42' in box 'box_reports' and keep it for 24 hours so the review agent can retrieve it later."}],"resultDescription":"A confirmation that the write was accepted and will become visible once the $0.002 USDC micropayment has settled; typically includes acknowledgment of the key, box, and TTL applied.","failureModes":["Payment not settled — write remains invisible until payment clears","Value exceeds 64 KB limit — request rejected","TTL exceeds 604800 seconds (7 days) — capped or rejected","Invalid or missing key/box identifier — bad request error","Cloudflare Worker timeout or downstream error — 5xx response"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to temporarily park a value (up to 64 KB) under a named key for another agent or process to retrieve later, especially in micropayment-gated (x402) agentic workflows where ephemeral cross-agent data sharing is required and data does not need to outlast the configured TTL.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-01T06:30:19.807Z","isFirstParty":false,"canonicalSlug":"dead-drop-key-value-store-put-0a1d75f2"}