{"uid":"cap_7EjILW7OrKkSdoC3Cmw4_","slug":"sovereign-engine-kv-store-d8a1bd65","name":"Sovereign Engine KV Store","description":"Pay-per-call x402 execution primitives (USDC on Base). Code execution runs in isolated Cloudflare Dynamic Worker sandboxes (JavaScript + Python, network blocked). Web search backed by Bing RSS. Self-hosted facilitator.","url":"https://api.zuluworksai.com/exec/kv-store","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"prompt":{"type":"string","description":"The input prompt"}}},"responseSchema":{"type":"json","example":{"data":{},"success":true,"receipt_id":"uuid"}},"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":"down","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_Gk1pjaJqef-PQV6XvAkg-","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":"Persistent key-value storage primitive accessible via pay-per-call x402 micropayment on Base (USDC)","exampleAgentPrompt":"Store the value 'session_token_abc123' under the key 'user_session_42' in the Sovereign Engine KV store — I want to retrieve it later in my workflow.","exampleUseCases":[{"title":"Multi-step agent workflow state persistence","prompt":"Save the current conversation context and decision tree state to a remote KV store between each agent step — I need to pick up exactly where I left off if the workflow restarts."},{"title":"Temporary cache for expensive computation results","prompt":"After my agent finishes a costly calculation, store the result in a pay-per-call KV store so other agent instances can reuse it without recalculating."},{"title":"Cross-agent configuration and secret sharing","prompt":"My fleet of agents needs to read shared API keys and configuration settings from a lightweight remote store — I don't want to hard-code them or pay for a full database subscription."}],"resultDescription":"Returns a JSON object with a 'data' field containing the stored or retrieved value, a 'success' boolean indicating whether the operation succeeded, and a 'receipt_id' UUID confirming the paid transaction.","failureModes":["Payment failure or insufficient USDC balance returns 402 Payment Required","Malformed prompt or missing input returns 400 Bad Request","Key not found on retrieval returns empty data object with success: false","Rate limiting or quota exceeded returns 429 Too Many Requests","Cloudflare Workers KV unavailability returns 503 Service Unavailable"],"whenToPreferThis":"Choose this endpoint when your agent needs lightweight, ephemeral or persistent key-value storage on a true pay-per-call basis with no subscription, and you are already operating within the x402/Base USDC micropayment ecosystem. Ideal for stateless agent workflows that need to persist small data blobs between steps without provisioning a full database.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T16:26:19.179Z","isFirstParty":false}