Synthex Forge x402 Memory Put

x402

Synthex Forge x402 Memory Put is a paid API for AI agents from x402.synthexforge.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-23).

Writes a named key-value state entry into a per-agent memory slot, paid via x402 USDC micropayment on Base mainnet.

Price / call$0.1

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StatusUnknown

How this service works

Synthex Forge x402 Receive: 41 paid verification, attestation and governance endpoints (Ed25519 + SHA-256 signed artifacts) plus free verify/public-key/standard sibling routes. Paid routes answer HTTP 402 with an x402 v2 `payment-required` envelope (atomic USDC on Base mainnet, chain ID 8453). Free routes are declared with `security: []` per the x402scan discovery spec.

Output

Returns a simple JSON confirmation object {ok: true} indicating the key-value pair was successfully written to the agent's named memory slot.

Example use cases

Persist workflow progress between sessions

“Save the current pipeline state for agent 'etl-bot-3' under the key 'pipeline_checkpoint' — the value is {step: 4, processed_rows: 12000, status: 'in_progress'}.”

Store agent preferences and configuration

“Write to agent 'support-agent-1' memory: key is 'user_preferences', value is {language: 'es', tone: 'formal', escalation_threshold: 3}.”

Track remaining budget for an autonomous agent

“Update the memory for agent 'trader-agent-9', key 'budget_state', with value {allocated: 1000, spent: 320, currency: 'USDC'} so it knows how much it has left.”

Technical details

Endpoint

POSThttps://x402.synthexforge.com/v1/memory/put?utm_source=zero.xyz

When to prefer

Choose this endpoint when an AI agent needs to persist structured state, preferences, or checkpoint data under a named key scoped to a specific agent identity, and when x402 micropayment via USDC on Base mainnet is acceptable. Prefer this over generic KV stores when operating within the Synthex Forge agent infrastructure ecosystem or when Ed25519-signed, governed storage is required.

Side effects

Missing required fields (key, owner, or value) returns a 400 error
Payment not provided or insufficient returns HTTP 402 with x402 v2 payment-required envelope
Invalid agent owner identifier may result in a 404 or 403
Oversized value object exceeding budget cap returns an error without truncation
Network or chain issues may cause intermittent 5xx errors

Input

Schema · Request body

Field	Type	Description
key	string	Named memory slot to write.
owner	string	Agent identifier whose memory receives the state.
value	object	State to remember (budget-capped, NOT truncated).

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true
  }
}

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