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AgentKV – Encrypted Key-Value Read (GET)
x402
AgentKV – Encrypted Key-Value Read (GET) is a paid API for AI agents from api.agentx402.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Reads a stored value from an agent-native, client-side encrypted key-value store, billed per-request via x402 micropayment with no signup or API key required.
Price / call$0.003
Success—
StatusUnknown
How this service works
Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai
Output
Returns the decrypted value associated with the requested key in the caller's wallet-scoped namespace. The response contains the stored payload (client-side encrypted at write time, decryptable by the authorized caller). If the key does not exist or the caller lacks access, an appropriate error is returned.
Example use cases
Retrieve persistent agent configuration
“Read back the config I stored in AgentKV under the key 'agent-settings' — use my wallet as the namespace and return the decrypted value.”
Fetch stored API credentials at runtime
“My agent needs to look up the value stored at key 'openai-key' in AgentKV — retrieve it from my encrypted namespace so the agent can use it without me hardcoding anything.”
Load saved workflow state mid-task
“The agent got interrupted — can you read the key 'workflow-checkpoint' from AgentKV in my wallet's namespace so we can resume from where we left off?”
Technical details
Endpoint
GEThttps://api.agentx402.ai/v1/kv/mainnet-validation-2026-07-26When to prefer
Choose this endpoint when your AI agent needs to read back previously stored values in a wallet-scoped, encrypted namespace without any traditional authentication (no signup, no API key). It is ideal for stateless or autonomous agents that use a crypto wallet or ak_ account key as their identity, and need persistent, encrypted state between invocations. Prefer it over traditional KV stores when you need per-request micropayment billing (x402), client-side encryption by default, and zero-friction onboarding.
Side effects
- Key not found — returns 404 if the requested key does not exist in the namespace
- Unauthorized — returns 402 or 401 if the x402 payment is missing, invalid, or insufficient ($0.003 USDC required per read)
- Invalid namespace — wallet address or ak_ key not recognized or malformed
- Rate limiting or credit exhaustion — caller has insufficient prepaid credits and per-op payment fails
- Network or service error — 500-level response if the backend is unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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