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GET
/
v1
/
particles
/
{particle_id}
Get Particle
curl --request GET \
  --url https://api.cuadra.ai/v1/particles/{particle_id} \
  --header 'Authorization: Bearer <token>'
{
  "id": "<string>",
  "name": "<string>",
  "category": "tone",
  "isSystem": true,
  "enabled": true,
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "description": "Sets professional tone",
  "currentVersion": 3,
  "tokenCount": 25,
  "content": "Maintain a professional tone.",
  "versions": [
    {
      "id": "<string>",
      "version": 123,
      "tokenCount": 123,
      "createdAt": "2023-11-07T05:31:56Z",
      "content": "You are a helpful assistant.",
      "createdBy": "user_xyz789"
    }
  ]
}

Authorizations

​
Authorization
string
header
required

JWT token from Stytch B2B authentication (magic link, SSO, or M2M)

Path Parameters

​
particle_id
string
required

Particle ID

Query Parameters

​
expand[]
string[] | null

Fields to expand (e.g., versions)

Response

Successful Response

Response schema for particle. Content visibility is controlled by is_system flag: - System particles: content hidden (MOAT protection) - Organization particles: content visible to org members

​
id
string
required

Unique particle identifier

Example:

"part_abc123"

​
name
string
required

Human-readable name

Example:

"Professional Tone"

​
category
enum<string>
required

Particle category

Available options:
role,
tone,
guardrails,
constraints,
format
Example:

"tone"

​
isSystem
boolean
required

Whether this is a system-managed particle

Example:

false

​
enabled
boolean
required

Whether the particle is active

Example:

true

​
createdAt
string<date-time>
required

Timestamp when the particle was created

Example:

"2024-01-15T10:30:00Z"

​
updatedAt
string<date-time>
required

Timestamp when the particle was last updated

Example:

"2024-01-15T14:45:00Z"

​
description
string | null

Particle description

Example:

"Sets professional tone"

​
currentVersion
integer | null

Current version number (derived from current_version)

Example:

3

​
tokenCount
integer | null

Token count of current version

Example:

25

​
content
string | null

Current content (hidden for system particles)

Example:

"Maintain a professional tone."

​
versions
ParticleVersionOut · object[] | null

Version history (when expanded)