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POST
/
v1
/
research
/research
curl --request POST \
  --url https://api.linkup.so/v1/research \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "excludeDomains": [
    "wikipedia.org"
  ],
  "includeDomains": [
    "microsoft.com",
    "agolution.com"
  ],
  "includeImages": true,
  "outputType": "sourcedAnswer",
  "q": "What is Microsoft's 2024 revenue?"
}
EOF
{
  "createdAt": "2026-01-01T00:00:00.000Z",
  "error": "<string>",
  "id": "01234-abcd-56789",
  "status": "completed",
  "updatedAt": "2026-01-01T00:00:00.000Z",
  "input": {
    "includeImages": false,
    "q": "What is Microsoft's 2024 revenue?",
    "toDate": "2025-01-01",
    "mode": "Auto",
    "outputType": "sourcedAnswer",
    "reasoningDepth": "L",
    "excludeDomains": [
      "wikipedia.org"
    ],
    "fromDate": "2025-01-01",
    "includeDomains": [
      "microsoft.com",
      "agolution.com"
    ],
    "structuredOutputSchema": null
  },
  "output": {
    "answer": "Microsoft's revenue for fiscal year 2024 was $245.1 billion, reflecting a 16% increase from the previous year.",
    "sources": [
      {
        "name": "Microsoft 2024 Annual Report",
        "snippet": "Highlights from fiscal year 2024 compared with fiscal year 2023 included: Microsoft Cloud revenue increased 23% to $137.4 billion.",
        "url": "https://www.microsoft.com/investor/reports/ar24/index.html"
      }
    ]
  },
  "type": "<string>"
}

Documentation Index

Fetch the complete documentation index at: https://docs.linkup.so/llms.txt

Use this file to discover all available pages before exploring further.

Get your API key

Create a Linkup account for free to get your API key.
This is an asynchronous endpoint. It immediately returns the research task identifier, before it is completed. Use GET /v1/research/:id to poll for the result, or GET /v1/research to list all your research tasks.
For an explanation of mode, reasoningDepth, and the async lifecycle, see the Research overview.

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json
​
q
string
required

The natural language question for which you want to retrieve context.

Example:

"What is Microsoft's 2024 revenue?"

​
outputType
enum<string>
required

The type of output you want to get. Use structured for a custom-formatted response defined by structuredOutputSchema.

Available options:
sourcedAnswer,
structured
​
excludeDomains
string[]

The domains you want to exclude of the search. By default, don't restrict the search.

Example:
["wikipedia.org"]
​
fromDate
string | null

The date from which the search results should be considered, in ISO 8601 format (YYYY-MM-DD). It must be before toDate, if provided, and later than 1970-01-01.

Example:

"2025-01-01"

​
includeDomains
string[]

The domains you want to search on. By default, don't restrict the search. You can provide up to 100 domains.

Maximum array length: 100
Example:
["microsoft.com", "agolution.com"]
​
includeImages
default:false

Defines whether the API should include images in its results.

​
structuredOutputSchema
string<json>

Required only when outputType is structured. Provide a JSON schema (as a string) representing the desired response format. The root must be of type object.

​
toDate
string | null

The date until which the search results should be considered, in ISO 8601 format (YYYY-MM-DD). It must be later than fromDate, if provided, or than 1970-01-01.

Example:

"2025-01-01"

​
mode
enum<string>
default:Auto

Pin the research agent mode. Omit to let the agent auto-classify per request based on the question.

Available options:
Answer,
Auto,
Investigate,
Research
​
reasoningDepth
enum<string>
default:L

Pin the reasoning depth (S < M < L < XL). Defaults to L when omitted. Higher depths trade latency for thoroughness.

Available options:
L,
M,
S,
XL

Response

Research task created successfully.

​
createdAt
string<date-time>
required

The date and time when the task was created.

Pattern: ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
Example:

"2026-01-01T00:00:00.000Z"

​
error
string | null
required

The error message if the task failed.

​
id
string
required

The unique identifier of the task.

Example:

"01234-abcd-56789"

​
status
enum<string>
required

The current status of the task.

Available options:
completed,
failed,
pending,
processing
Example:

"completed"

​
updatedAt
string<date-time>
required

The date and time when the task status was last updated.

Pattern: ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
Example:

"2026-01-01T00:00:00.000Z"

​
input
object
required
​
output
object
required
​
type
string
required
Allowed value: "research"