Look Up Investor & VC Fund Information API

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Test this endpoint with real requests in the interactive playground. Queue investor lookups, poll for results, and review JSON responses.

Launch Investors Playground

Retrieve comprehensive information about investment firms, venture capital funds, angel investors, and other funding organizations. Returns detailed investor profiles including partners, investment focus, check sizes, portfolio locations, and recent investments.

Related Endpoints

Overview

API Endpoint

https://api.nyne.ai/company/funders

Endpoint: POST /company/funders
Delivery: Receive a request_id, poll for completion, or provide a callback URL.
Credits: 20 credits when a result is produced.
Use Cases: Investor research, fundraising strategy, competitive intelligence, portfolio analysis, and market research.
Data Sources: Aggregated from Crunchbase, LinkedIn, official investor websites, news articles, and industry publications.
Accuracy: Only returns verified investor data from reliable sources. All data is cross-referenced and validated.

Authentication

Include your API key and secret in every request:

Headers

X-API-Key: your_api_key_hereX-API-Secret: your_api_secret_here

Rate Limits

Investor lookups consume credits and respect your account limits:

Per Minute: 60 requests
Per Hour: 1000 requests
Monthly: Varies by plan

Credit Usage

API credits are consumed for investor lookup requests:

Investor Lookup: 20 credits per completed lookup

Credit Efficiency

Credits are charged when investor data is retrieved. If no investor information is found, no credits are charged.

POST /company/funders

Queue an investor lookup for the specified investor organization.

POST /company/funders

Request Body

Field	Type	Required	Description
`company_name`	string	optional*	Investor name to search for (e.g., "Y Combinator", "Sequoia Capital", "Andreessen Horowitz").
`company_domain`	string	optional*	Investor domain to search for (e.g., "ycombinator.com", "sequoiacap.com", "a16z.com").
`callback_url`	string	optional	HTTPS URL to receive the completed payload automatically.

* At least one of company_name or company_domain is required.

Example Request

{ "company_name": "Y Combinator", "callback_url": "https://example.com/webhooks/funders" }

cURL Example

Queue an Investor Lookup

curl -X POST https://api.nyne.ai/company/funders \
  -H "X-API-Key: your_api_key_here" \
  -H "X-API-Secret: your_api_secret_here" \
  -H "Content-Type: application/json" \
  -d '{
    "company_name": "Sequoia Capital"
  }'

Immediate Response

{ "success": true, "data": { "request_id": "cofunders_64f2d8e4_1700000123", "status": "queued", "message": "Investors lookup queued. Use GET /company/funders?request_id=... to check status.", "callback_url": "https://example.com/webhooks/funders" }, "timestamp": "2025-11-10T22:20:03Z" }

GET /company/funders

Poll for completion or retrieve cached results.

GET /company/funders

Query Parameters

request_id (string, required) – identifier returned by the POST call.

cURL Example

Poll for Results

curl -X GET "https://api.nyne.ai/company/funders?request_id=cofunders_64f2d8e4_1700000123" \
  -H "X-API-Key: your_api_key_here" \
  -H "X-API-Secret: your_api_secret_here"

Completed Response

{ "success": true, "data": { "request_id": "cofunders_64f2d8e4_1700000123", "status": "completed", "result": { "investor_domain": "ycombinator.com", "investor_name": "Y Combinator", "partners": [ { "name": "Paul Graham", "linkedin_url": "https://www.linkedin.com/in/paulgraham/" }, { "name": "Jessica Livingston", "linkedin_url": "https://www.linkedin.com/in/jessicalivingston/" } ], "location": "Mountain View, CA, US", "investment_thesis": "Y Combinator invests in early-stage startups at the idea stage, providing seed funding and mentorship.", "average_check_size": { "low": 125000, "high": 500000, "currency": "USD" }, "rounds_they_invest_in": ["pre_seed", "seed"], "investment_locations": [ {"city": "San Francisco", "state": "CA", "country": "US"}, {"city": "New York", "state": "NY", "country": "US"} ], "recent_investments": [ { "company_name": "Example Startup", "company_domain": "example.com", "amount": 500000, "currency": "USD", "date": {"year": 2024, "month": 6, "day": 15} } ] }, "created_on": "2025-11-10T22:20:03Z", "completed_on": "2025-11-10T22:20:17Z" }, "timestamp": "2025-11-10T22:20:17Z" }

Callback Payload

If callback_url is provided, the same JSON structure is POSTed to your endpoint once the lookup is complete.

Callback Example

POST https://example.com/webhooks/funders
Content-Type: application/json

{
  "request_id": "cofunders_64f2d8e4_1700000123",
  "status": "completed",
  "result": {
    "investor_domain": "ycombinator.com",
    "investor_name": "Y Combinator",
    "partners": [
      {
        "name": "Paul Graham",
        "linkedin_url": "https://www.linkedin.com/in/paulgraham/"
      }
    ],
    "location": "Mountain View, CA, US",
    "investment_thesis": "Y Combinator invests in early-stage startups at the idea stage.",
    "average_check_size": {
      "low": 125000,
      "high": 500000,
      "currency": "USD"
    },
    "rounds_they_invest_in": ["pre_seed", "seed"],
    "investment_locations": [
      {"city": "San Francisco", "state": "CA", "country": "US"}
    ],
    "recent_investments": [
      {
        "company_name": "Example Startup",
        "company_domain": "example.com",
        "amount": 500000,
        "currency": "USD",
        "date": {"year": 2024, "month": 6, "day": 15}
      }
    ]
  },
  "created_at": "2025-11-10T22:20:03Z",
  "completed_at": "2025-11-10T22:20:17Z"
}

Response Fields

Top-Level Fields

Field	Type	Description
`investor_domain`	string	The verified investor website domain (e.g., "ycombinator.com", "sequoiacap.com").
`investor_name`	string	Full official name of the investor/funder (e.g., "Y Combinator", "Sequoia Capital").
`partners`	array	Array of up to 20 most prominent partners, each with `name` and optional `linkedin_url`.
`location`	string	Primary headquarters location (city, state/province, country format).
`investment_thesis`	string	Brief description of their investment focus and strategy.
`average_check_size`	object	Object with `low`, `high`, and `currency` fields representing typical investment amounts.
`rounds_they_invest_in`	array	Array of standardized round types they typically invest in (e.g., "seed", "series_a", "pre_seed").
`investment_locations`	array	Array of up to 5 most common locations where their portfolio companies are based.
`recent_investments`	array	Array of up to 5 most recent investments with company details, amount, currency, and date.

Partner Object

Field	Type	Description
`name`	string	Full name of the partner.
`linkedin_url`	string	LinkedIn profile URL if available (can be empty string if not found).

Average Check Size Object

Field	Type	Description
`low`	number	Minimum typical check size (as a number, e.g., 125000 for $125K).
`high`	number	Maximum typical check size (as a number, e.g., 500000 for $500K).
`currency`	string	Currency code (e.g., "USD", "EUR"). Defaults to "USD" if not specified.

Investment Location Object

Field	Type	Description
`city`	string	City name (e.g., "San Francisco", "New York").
`state`	string	2-character state/province code (e.g., "CA", "NY", "ON") or empty string if not applicable.
`country`	string	2-character ISO country code (e.g., "US", "CA", "GB").

Recent Investment Object

Field	Type	Description
`company_name`	string	Name of the company they invested in.
`company_domain`	string	Website domain of the company.
`amount`	number	Investment amount as a number (e.g., 500000 for $500K).
`currency`	string	Currency code (e.g., "USD", "EUR"). Defaults to "USD" if not specified.
`date`	object	Date object with `year`, `month`, and `day` fields.

Round Types

Standardized round type values used in rounds_they_invest_in:

pre_seed – Pre-seed rounds
seed – Seed rounds
series_a through series_h – Series A through H
bridge – Bridge rounds
convertible_note – Convertible note rounds
angel – Angel rounds
growth – Growth rounds
late_stage – Late stage rounds

Example Use Cases

Investor Research

Research potential investors for your startup, including their investment focus, typical check sizes, and portfolio companies.

Fundraising Strategy

Identify investors that match your company's stage, location, and industry focus.

Competitive Intelligence

Track which investors are active in your market and what companies they're backing.

Portfolio Analysis

Analyze investor portfolios to understand investment patterns and trends.

Error Codes

missing_parameters – Both company_name and company_domain omitted.
invalid_callback_url – Callback URL must be HTTPS.
subscription_required – Account lacks enrichment access.
rate_limit_exceeded / monthly_limit_exceeded – Usage limits exceeded.
insufficient_credits – Account has insufficient credits for this request.

Next Steps

Experiment with the Investors Playground.
Review other endpoints: Company Funding and Company Enrichment.

Try EZ Tool for a no-code interface | Open Playground

Investor Lookup API

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Related Endpoints

Overview

API Endpoint

Authentication

Rate Limits

Credit Usage

Credit Efficiency

POST /company/funders

POST /company/funders

Request Body

Example Request

cURL Example

Immediate Response

GET /company/funders

GET /company/funders

Query Parameters

cURL Example

Completed Response

Callback Payload

Response Fields

Top-Level Fields

Partner Object

Average Check Size Object

Investment Location Object

Recent Investment Object

Round Types

Example Use Cases

Investor Research

Fundraising Strategy

Competitive Intelligence

Portfolio Analysis

Error Codes

Next Steps