API reference · CAIN Planner

Generate Candidates

POST /fabric/plans/candidates

Last reviewed 2026-10-02

POST /fabric/plans/candidates

Generate multiple candidate plans (exploratory mode).

Request body

PlanCandidatesRequest (required)

Field	Type	Meaning
`goal` required	string
`intent` required	string
`mode`	string	default `"EXPLORATORY"`
`available_skills`	array of object or null	default `[]`
`relevant_memories`	array of object or null	default `[]`
`available_tools`	array of string or null	default `[]`
`constraints`	array of object or null	default `[]`
`optimization`	map of string to boolean or null	default `{}`

Responses

Status	Meaning	Body
`200`	Successful Response	JSON
`422`	Validation Error	`HTTPValidationError`
`401`	No key, or a key that is not valid	JSON `detail`
`429`	Rate limit for your plan reached; retry after the Retry-After seconds	JSON `detail`

Try it

Your API key X-API-Key Remember the key in this tab onlyRequest body application/json

This call changes data in the account the key belongs to.

The request goes from your browser straight to this site. Your key is not stored unless you tick the box, and then only in this tab's session storage.

Code

curl -sS -X POST 'https://cainstudio.online/fabric/plans/candidates' \
  -H "X-API-Key: $CAIN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"goal": "goal", "intent": "intent", "mode": "EXPLORATORY", "available_skills": [], "relevant_memories": [], "available_tools": [], "constraints": [], "optimization": {}}'

import json, os, urllib.request

req = urllib.request.Request('https://cainstudio.online/fabric/plans/candidates', method='POST',
    headers={"X-API-Key": os.environ["CAIN_API_KEY"], "Content-Type": "application/json"},
    data=json.dumps({
      "goal": "goal",
      "intent": "intent",
      "mode": "EXPLORATORY",
      "available_skills": [],
      "relevant_memories": [],
      "available_tools": [],
      "constraints": [],
      "optimization": {}
    }).encode())
with urllib.request.urlopen(req, timeout=60) as r:
    print(r.status, json.load(r))

const res = await fetch("https://cainstudio.online/fabric/plans/candidates", {
  method: "POST",
  headers: {
    "X-API-Key": process.env.CAIN_API_KEY!,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "goal": "goal",
    "intent": "intent",
    "mode": "EXPLORATORY",
    "available_skills": [],
    "relevant_memories": [],
    "available_tools": [],
    "constraints": [],
    "optimization": {}
  }),
});
console.log(res.status, await res.json());

Schemas used

HTTPValidationError · PlanCandidatesRequest · ValidationError

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