# Particle Pro – Get Entity

> Particle Pro – Get Entity is a paid API for AI agents from api.particle.pro, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a single knowledge graph entity (person, organization, concept) by slug or ID

## Facts

- Endpoint: GET https://api.particle.pro/v1/entities/:id
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/particle-pro-get-entity-c0ea587b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_L-1Pzwnd-0zJ0zMspsHdk

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 particle-pro-get-entity-c0ea587b
```

Example prompt: Can you pull up the Particle Pro knowledge graph entry for 'sam-altman' and tell me what it says about him?

## When to prefer this

Use this endpoint when you need structured, canonical knowledge graph data about a specific named entity (person or organization) by a known slug or ID. Prefer it over search-style endpoints when you already know the exact slug (e.g., 'sam-altman', 'apple') and need full entity details rather than a list. It is the fastest way to resolve a single entity on the Particle Pro platform.

## Known failure modes

- Entity slug or ID not found (404) — the requested slug does not exist in the knowledge graph
- Invalid slug format — slugs must be lowercase hyphenated strings like 'sam-altman'
- Payment required / x402 flow not completed — endpoint costs $0.01 USDC per call
- Rate limiting or authentication failures if API credentials are missing

## How this service works

Get an entity. Returns a single knowledge graph entity by slug (e.g., 'sam-altman', 'apple') or ID.

## Output

A structured knowledge graph entity object containing metadata about the person, organization, or concept — including their slug, ID, and associated attributes as indexed by Particle Pro.

## 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"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Entity slug (e.g., 'sam-altman', 'apple') or ID"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-get-entity-c0ea587b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.particle.pro](https://www.zero.xyz/host/api.particle.pro/llms.txt)