# Synthex Forge Signed Research Endpoint

> Synthex Forge Signed Research Endpoint 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).

Returns a cryptographically signed research artifact (Ed25519 + SHA-256) for a given topic, paid via x402 USDC micropayment on Base mainnet.

## Facts

- Endpoint: GET https://x402.synthexforge.com/v1/signed-research?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-signed-research-endpoint-cadce1e8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oEl5T28R7joTCV23OFFGS

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-signed-research-endpoint-cadce1e8
```

Example prompt: Can you pull the signed research artifact from Synthex Forge on the topic of 'decentralized identity standards'? I need it cryptographically attested with the Ed25519 signature so I can verify the integrity.

## When to prefer this

Choose this endpoint when you need a cryptographically signed and attested research artifact (Ed25519 + SHA-256) that provides verifiable provenance and tamper-evidence, particularly for audit, governance, or compliance use cases requiring proof of authenticity. Prefer it over generic research APIs when cryptographic attestation and micropayment-gated access (USDC on Base) are acceptable or desirable constraints.

## Known failure modes

- HTTP 402 returned if x402 USDC payment on Base (chain ID 8453) is not completed or fails
- Missing required 'topic' query parameter results in a validation error
- Invalid HTTP method (not GET, HEAD, or DELETE) returns 405 Method Not Allowed
- Topic not found in research corpus may return empty or error response
- Network or blockchain payment settlement delays may cause timeouts

## 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

A JSON response containing a signed research artifact for the requested topic, including Ed25519 signature and SHA-256 hash for integrity verification, attesting the authenticity and governance compliance of the content.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "topic"
     ],
     "properties": {
      "topic": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthex-forge-signed-research-endpoint-cadce1e8/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)