# Xynaptic Company Relationship

> Xynaptic Company Relationship is a paid API for AI agents from api.xynaptic.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-01).

Analyzes the relationship between two French companies by SIREN, identifying shared officers, common activity codes, same city presence, and size comparison.

## Facts

- Endpoint: GET https://api.xynaptic.io/v1/company-relationship?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xynaptic-company-relationship-f64a2dc8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kswmBMVfqDWUnjzL0olFK

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 xynaptic-company-relationship-f64a2dc8
```

Example prompt: Are the two French companies with SIREN 123456789 and 987654321 connected in any way — do they share officers, operate in the same city, or have the same activity code?

## When to prefer this

Use this endpoint when you need to detect potential affiliations, conflicts of interest, or hidden connections between exactly two French companies identified by SIREN. It is more focused than a general company compare endpoint — it specifically surfaces relationship signals (shared people, activity, geography) rather than just financial metrics side by side.

## Known failure modes

- Invalid or non-existent SIREN returns an error or empty result
- Missing one or both SIREN parameters returns a 400 bad request
- Companies with no registry data may return limited relationship signals
- Rate limiting or payment failure (402) if credits are exhausted

## How this service works

Xynaptic Company Relationship — the link between two French companies: shared officers, same activity, same city, size comparison. Parameters: ?siren=A&siren=B.

## Output

Returns a structured comparison of two French companies including: list of shared officers/directors, whether they share the same NAF/APE activity code, whether they are headquartered in the same city, and a size comparison (employee count, revenue tier). Highlights any relationship indicators that suggest affiliation or connection.

## 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",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xynaptic-company-relationship-f64a2dc8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.xynaptic.io](https://www.zero.xyz/host/api.xynaptic.io/llms.txt)