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Agent Memory Save: Key-Value Store for Agents
x402
Agent Memory Save: Key-Value Store for Agents is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).
Persists a text or JSON value under a named key in a private namespace so an AI agent can retrieve it later across sessions.
Price / call$0.002
Success—
StatusUnknown
How this service works
Save a value (up to 8,000 characters of text or JSON) under a key in your own namespace, so an agent can remember facts, preferences or task state between runs. Overwrites an existing key; expires after 1 to 30 days (default 30). Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to persist what an agent learned for a later call to memory_get.
Output
Returns a JSON object confirming whether the value was saved (saved: true), the key name, the size of the stored value in bytes, the ISO timestamp when it was last updated, and the ISO timestamp when it will expire.
Example use cases
Persist user preferences across sessions
“Save the user's preferences — they like concise responses, use metric units, and are in the Europe/Paris timezone — under the key 'user_prefs' in my namespace 'myagent-secret-ns-0042'. Keep it for 30 days.”
Store intermediate task state mid-workflow
“I'm halfway through a multi-step research task. Save this JSON summary of what I've gathered so far under the key 'research_checkpoint_2024' in namespace 'researchbot-ns-9981' for 7 days so I can pick it up in the next run.”
Cache API response for reuse
“Store the company profile JSON I just fetched for Acme Corp under the key 'acme_corp_profile' in namespace 'bizagent-cache-ns-5521' and keep it for 3 days so I don't have to look it up again.”
Technical details
Endpoint
GEThttps://agent-data-tools.revmesh2074.workers.dev/memory/set?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to persist small pieces of text or JSON (facts, preferences, state, results) between separate runs or tool calls without setting up a database. It is ideal for lightweight, short-lived state (up to 30 days) where eventual consistency (up to 1-minute read lag) is acceptable. Prefer this over in-context memory when data must survive across sessions or agent restarts.
Side effects
- Namespace not provided or shorter than 16 characters — request rejected
- Key exceeds 200 characters — validation error
- Value exceeds 8,000 characters — request rejected
- Days parameter out of 1–30 range — validation error or default used
- Eventual consistency lag — a read on another node may not reflect this write for up to 60 seconds
- Payment failure via x402 — call not charged, not executed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keyrequired | string | The key, up to 200 characters |
| days | string | Days to keep it, 1 to 30 (default 30) |
| valuerequired | string | The text or JSON to save, up to 8,000 characters |
| namespacerequired | string | Your namespace: a secret of 16 to 128 letters, digits, - or _ that you choose and reuse. Anyone who knows it can read and write it, so treat it like a password; send it in a POST body to keep it out of URLs. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| key | string | |
| size | number | |
| saved | boolean | |
| expiresAt | string | |
| updatedAt | string |
Tags
x402
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