{"uid":"cap_HRIb8jzAiab6bMtHSIni_","slug":"turboshop-ephemeral-key-vault-b5928669","name":"Turboshop Ephemeral Key Vault","description":"Real working cryptographic microservice that issues, rotates, signs with, verifies, and revokes short-lived ephemeral session keys (secp256k1 EVM, Ed25519, HMAC-SHA256) with verifiable rotation chain attestation.","url":"https://turboshop.ai/api/v1/products/prod-ephemeral-key-vault/buy?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"action":{"enum":["rotate","sign","verify","revoke","status"],"type":"string","description":"Vault operation to execute (default: rotate)"},"payload":{"type":"string","description":"Optional payload string to sign or verify"},"agent_id":{"type":"string","description":"Calling agent or session identifier"},"algorithm":{"enum":["secp256k1","ed25519","hmac-sha256"],"type":"string","description":"Cryptographic key algorithm (default: secp256k1)"},"ttl_seconds":{"type":"integer","description":"Ephemeral key TTL in seconds (default: 3600)"},"previous_key_id":{"type":"string","description":"Optional key_id to rotate from and automatically revoke"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_BMLUANOwICaQV7VnfPNzD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Issues, rotates, signs with, verifies, and revokes short-lived cryptographic session keys (secp256k1, Ed25519, HMAC-SHA256) with verifiable rotation chain attestation for AI agents.","exampleAgentPrompt":"Rotate my secp256k1 session key for agent 'agent-007', revoke the old key with ID 'key-abc123', and set the new key's TTL to 1800 seconds.","exampleUseCases":[{"title":"Fresh session key for agent swarm","prompt":"Issue a new Ed25519 ephemeral key for my agent 'orchestrator-01' with a 30-minute TTL so it can authenticate securely with its sub-agents during this run."},{"title":"Sign a task payload before dispatch","prompt":"Sign the payload 'task:process-batch-42' using the current HMAC-SHA256 ephemeral key for agent 'worker-agent-9' so I can verify it wasn't tampered with downstream."},{"title":"Rotate key mid-session with revocation","prompt":"My secp256k1 session key 'key-xyz789' for agent 'trader-bot' is about to expire — rotate it with a fresh one, set a 3600-second TTL, and automatically revoke the old key."}],"resultDescription":"Returns an ephemeral key object including a key_id, the public key or HMAC token, expiry timestamp, rotation chain attestation (linking to previous key if rotated), and for sign/verify actions a signature or boolean verification result. Status queries return the current state and remaining TTL of the specified key.","failureModes":["Invalid or expired previous_key_id returns 404 or key-not-found error","Unsupported algorithm enum value returns validation error","TTL out of allowed range returns parameter error","Payload missing when action is sign or verify returns missing-parameter error","Payment failure (x402) prevents key issuance","Agent_id not provided when required returns auth/session error"],"whenToPreferThis":"Choose this endpoint when an AI agent or multi-agent swarm needs short-lived, cryptographically verifiable session keys with built-in rotation and revocation — especially for EVM-compatible (secp256k1) or Ed25519 use cases. Prefer it over static key stores when ephemeral, auditable key lifecycle management with rotation-chain attestation is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T12:42:36.682Z","isFirstParty":false,"canonicalSlug":"turboshop-ephemeral-key-vault-83376fc8"}