Synthex Forge Signed Snapshot

x402

Synthex Forge Signed Snapshot is a paid API for AI agents from x402.synthexforge.com, paid per call via x402, $0.3/call, status unknown (last checked 2026-10-23).

Creates a cryptographically signed (Ed25519 + SHA-256) attestation artifact from a caller-supplied data snapshot, returning a verifiable governance record on Base mainnet via x402 micropayment.

Price / call$0.3

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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 JSON object with {ok: true} confirming that the signed snapshot artifact was successfully created and recorded. The signed attestation (Ed25519 + SHA-256) is stored by Synthex Forge as a verifiable governance record, anchored to Base mainnet via x402 micropayment confirmation.

Example use cases

Audit trail for scraped research data

“I just pulled a table of clinical trial results from clinicaltrials.gov at Unix timestamp 1718100000. Can you create a signed snapshot of these rows — [{trial_id: 'NCT001', status: 'completed', phase: '3'}] — with the source cited as clinicaltrials.gov, subject labeled 'Phase 3 trial results', so I have a verifiable attestation for our compliance team?”

Provenance record for financial data feed

“Attest this snapshot of exchange rates I fetched at Unix time 1718200000: series rows like [{currency: 'EUR', rate: '1.08'}], source is ECB europa.eu, subject is 'EUR/USD daily rate'. I need a cryptographically signed governance artifact I can point auditors to.”

Governance snapshot for AI model benchmark

“Create a signed data snapshot of these benchmark scores — [{model: 'gpt-4o', score: '92.3'}, {model: 'claude-3', score: '91.1'}] — fetched at Unix time 1718300000, with sources from huggingface.co, subject 'LLM benchmark leaderboard'. I want an Ed25519-attested artifact I can reference in our model governance report.”

Technical details

Endpoint

POSThttps://x402.synthexforge.com/v1/data/signed-snapshot?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a cryptographically signed, verifiable attestation of a specific data snapshot — especially when source provenance, audit trails, or governance compliance are required. It is ideal for AI agents that need to prove the state of data at a point in time with Ed25519 signatures and SHA-256 hashing. Prefer it over simple logging when tamper-evidence and blockchain-anchored proof of data collection are needed. Not suitable for free-tier use cases, real-time streaming data, or scenarios where micropayment (USDC on Base) is not feasible.

Side effects

HTTP 402 returned if x402 USDC payment on Base mainnet (chain ID 8453) has not been completed or is malformed
Empty or missing series array may cause validation failure or an attestation of an empty snapshot
Invalid fetched_at timestamp (non-integer or far-future value) may be rejected or cause freshness anchor errors
Malformed source citation objects (missing required fields) may result in incomplete provenance records
Network or signing service outage returns non-200 error with no artifact created

Input

Schema · Request body

Field	Type	Description
series	array	Data rows of the snapshot: [{key, value, ...}]
sources	array	Source citations: [{url?, title?, publisher?, retrievedAt?}]
subject	string	Optional human label for the thing being snapshotted.
fetched_at	—	Unix seconds when the caller fetched the data (freshness anchor).

Output

Schema · Response

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

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