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Memwry AI Working Memory — 12h Ephemeral Write
x402
Memwry AI Working Memory — 12h Ephemeral Write is a paid API for AI agents from memwry.servitor.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-19).
Stores a keyed value in ephemeral agent working memory for 12 hours, paid per-write with USDC via x402 on Base; reads are always free.
Price / call$0.02
Success—
StatusUnknown
How this service works
Pay-per-write working memory for autonomous agents. Sub-cent ephemeral state, zero account setup, settled instantly on Base via x402. Writes cost USDC. Reads are always free.
Output
Returns a JSON receipt confirming the write, including: receiptId (UUID), txHash (Base chain transaction hash), agentId, key, tier ('12h'), ttlSeconds (43200), paidAt timestamp, expiresAt timestamp, amount in USDC microcents (200000 = $0.20), network ('eip155:8453'), currency ('USDC'), and service identifier ('memwry').
Example use cases
Multi-step agent task checkpoint
“Store the current task progress for agent 'crawler-agent-7' under the key 'task-state' in Memwry for 12 hours — the value is: {"step": 5, "remainingUrls": ["https://example.com/page3"], "status": "in-progress"}.”
Agent scratchpad for research pipeline
“Write a scratchpad entry for agent 'research-bot-42' with the key 'findings' to Memwry — store this for 12 hours: {"sources": ["arxiv.org/abs/1234"], "summary": "Transformer attention mechanisms improved by 12%"}.”
Ephemeral shared context between agent steps
“Save the shared context for agent 'orchestrator-1' under key 'subtask-results' in Memwry with a 12-hour TTL — the value is: {"step1": "done", "step2": "pending", "handoff": "agent-worker-2"}.”
Technical details
Endpoint
GEThttps://memwry.servitor.workers.dev/mem/%7BagentId%7D/%7Bkey%7D/12hWhen to prefer
Choose this endpoint when an autonomous agent needs lightweight, ephemeral key-value storage for 12 hours with no account setup, no persistent infrastructure, and sub-cent cost settled instantly on-chain via USDC. Ideal for agent workflows requiring transient scratchpad state, checkpoint data, or inter-step context passing without a dedicated database. Prefer over full databases or persistent KV stores when data lifetime of exactly 12 hours is acceptable and pay-per-write pricing is desirable.
Side effects
- Payment failure — insufficient USDC balance or x402 payment not accepted; returns payment error
- Body too large — payload exceeds 512KB limit; returns 413 or equivalent error
- Invalid agentId or key path parameters — malformed URL path; returns 400
- Network/blockchain congestion — settlement delay or tx failure on Base; may return 503 or timeout
- Expired or invalid payment token — x402 auth header missing or malformed; returns 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"key": "goal",
"tier": "12h",
"amount": "20000",
"paidAt": "2026-08-23T09:42:18Z",
"txHash": "0xabcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890",
"agentId": "agent-123",
"network": "eip155:8453",
"service": "memwry",
"currency": "USDC",
"expiresAt": "2026-08-23T21:42:18Z",
"receiptId": "e4c18495-e224-5920-9782-fd6cc80227b5",
"ttlSeconds": 43200
}
}Tags
x402
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