# Synthex Forge Synthesis Verdict

> Synthex Forge Synthesis Verdict is a paid API for AI agents from x402.synthexforge.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-23).

Synthesizes audit, quantitative, and research input blocks into a signed governance verdict with Ed25519 + SHA-256 attestation artifacts.

## Facts

- Endpoint: POST https://x402.synthexforge.com/v1/synthesis/verdict?utm_source=zero.xyz
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthex-forge-synthesis-verdict-a74e0ad8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SHIHy1RwIVy_A8StsIPdx

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability synthex-forge-synthesis-verdict-a74e0ad8 -d '<json body>'
```

Example prompt: Synthesize a verdict for 'Q2 DeFi Protocol Review': audit says the smart contract passed security checks but flagged a warning on access control, quant shows BTC with a bullish direction at 0.8 strength, and research on liquidity risk has a cautious stance with 0.6 confidence — give me a signed attestation.

## When to prefer this

Choose this endpoint when you need a single cryptographically attested, multi-source synthesis verdict combining audit outcomes, quantitative signals, and research stances into one signed artifact. It is distinct from pure verification or public-key lookup endpoints (which are free siblings) in that it performs active synthesis across heterogeneous evidence blocks. Prefer it over generic LLM summarization when you need a tamper-evident, blockchain-payment-gated governance artifact with Ed25519 provenance suitable for regulatory or institutional submission.

## Known failure modes

- HTTP 402 Payment Required if USDC payment on Base mainnet (chain ID 8453) is not attached or insufficient
- Malformed audit/quant/research block items may cause validation errors or empty synthesis
- Missing required array items may produce an incomplete or null verdict
- Network or chain settlement failures may delay or reject the payment envelope
- Invalid Ed25519 key state on the server side could cause signing to fail

## 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 an 'ok' boolean confirming the verdict was synthesized. The full response includes a cryptographically signed artifact (Ed25519 + SHA-256) encoding the synthesized governance verdict across all provided audit, quant, and research blocks, suitable for downstream verification or regulatory attestation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "audit": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "description": "Audit block: [{area?, outcome?: pass|fail|warn, finding?, ...}]"
  },
  "quant": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "description": "Quant block: [{symbol?, direction?, strength?, ...}]"
  },
  "subject": {
   "type": "string",
   "description": "Optional human label for the thing being synthesized."
  },
  "research": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "description": "Research block: [{topic, stance?, confidence?, ...}]"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthex-forge-synthesis-verdict-a74e0ad8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.synthexforge.com](https://www.zero.xyz/host/x402.synthexforge.com/llms.txt)