> ## Documentation Index
> Fetch the complete documentation index at: https://api.tryspecter.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Field reference: Investor Interest Signals
> Every field in the Investor Interest Signals, its type, and what it means.
All 28 fields of the Investor Interest Signals, grouped by category.
Names are the Parquet field names; the CSV delivery uses its own column
headers, listed under [CSV column names](#csv-column-names).
Every field may be null unless marked **required**. Today `strategic_signal_id` is guaranteed.
## What's in it
| Category | Fields |
| ------------------------------------------------- | ------ |
| [ID](#id) | 3 |
| [Signal Data](#signal-data) | 6 |
| [Company / Personal Data](#company-personal-data) | 15 |
| [Financials](#financials) | 4 |
## ID
| Field | Type | Description |
| --------------------- | --------------------- | -------------------------------------------------------------------- |
| `strategic_signal_id` | `string` **required** | Investor Interest ID. |
| `specter_person_id` | `string` | Specter identifier for the person. Resolves against the People DB. |
| `company_id` | `string` | Specter identifier for the company. Resolves against the Company DB. |
## Signal Data
| Field | Type | Description |
| ---------------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------- |
| `signal_date` | `date` | Signal featured date. |
| `signal_score` | `integer` | Signal score from Specter's proprietary algorithm, 1 to 10, with 10 the highest. Based on signal source, signal strength and company performance. |
| `source_type` | `string` | Based on signal source. One of `Insider`, `Influencer`, `Journalist`, `Angel`, `Investor`, `Investment Bank`. |
| `signal_type` | `string` | Whether the signal is about a company or a person. One of `Talent`, `Company`. |
| `signal_source` | `string` | The VC firm, corporation, or individual that is the source of the signal. |
| `signal_summary` | `string` | Brief on the investor activity and what the company does. |
## Company / Personal Data
| Field | Type | Description |
| ------------------------ | ---------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `name` | `string` | Name of the company or person the signal is about. |
| `website` | `string` | Company website URL or LinkedIn personal profile URL in case of a Signal Type = Talent. |
| `screenshot` | `string` | Company website screenshot. |
| `hq_location` | `string` | City-level location of the company's headquarters. |
| `hq_region` | `string` | Region the company's headquarters sits in. One of `Africa`, `Asia`, `Oceania`, `Canada`, `Europe`, `LATAM`, `MENA`, `United States`, `Russia`. |
| `growth_stage` | `string` | Stage the company has reached in its growth. One of `Pre-Launch`, `Bootstrapped`, `Early Stage`, `Growth Stage`, `Late Stage`. |
| `company_linkedin_url` | `string` | URL of the company's LinkedIn page. |
| `twitter_url` | `string` | URL of the company's X (Twitter) profile. |
| `talent_github_url` | `string` | GitHub profile URL (only available when Signal Type = Talent) |
| `company_description` | `string` | Short description of what the company does. |
| `company_founded_year` | `integer` | Company founded date. |
| `customer_focus` | `string` | This data point categorizes companies based on their primary and secondary customer engagement models. One of `B2B`, `B2C`, `B2B,B2C`, `B2C,B2B`. |
| `specter_industry` | `array` | Classifies companies by their economic activity — the market they serve and the products or services they deliver. E.g: Construction, Utilities, Wholesale There is one industry per company, with up to three levels. |
| `specter_tech_verticals` | `array>` | Classifies companies by the technology domain they operate in — the technical capability or space they're building around. E.g: AI & Machine Learning, Cybersecurity, FinTech. There can be up to 5 tech verticals per company, with 2 levels each. |
| `is_industry_estimated` | `boolean` | True if new position industry and tech verticals are estimated. |
## Financials
| Field | Type | Description |
| --------------------------------- | --------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
| `company_funding_amount_usd` | `string` | Total funding the company has raised, in USD. Delivered as a string of digits, without a currency symbol or separators. |
| `company_last_funding_date` | `date` | Date of the company's most recent funding round. |
| `company_last_funding_amount_usd` | `string` | Amount of the company's most recent funding round, in USD. Delivered as a string of digits, without a currency symbol or separators. |
| `company_investors` | `array` | Investors in the company. |
## CSV column names
The CSV delivery carries the same fields under the headers below. Parquet,
JSONL and the API all use the field name.
| Field | CSV column |
| --------------------------------- | ----------------------------- |
| `strategic_signal_id` | Specter - Strategic Signal ID |
| `specter_person_id` | Specter - Person ID |
| `company_id` | Specter - Organization ID |
| `signal_date` | Signal Date |
| `signal_score` | Signal Score |
| `source_type` | Source Type |
| `signal_type` | Signal Type |
| `signal_source` | Signal Sources |
| `signal_summary` | Signal Summary |
| `name` | Name |
| `website` | Website |
| `screenshot` | Screenshots |
| `hq_location` | HQ Location |
| `hq_region` | HQ Region |
| `growth_stage` | Growth Stage |
| `company_linkedin_url` | LinkedIn - URL |
| `twitter_url` | Twitter - URL |
| `talent_github_url` | GitHub - URL |
| `company_description` | Description |
| `company_founded_year` | Founded |
| `customer_focus` | Customer Focus |
| `specter_industry` | Industry |
| `specter_tech_verticals` | Tech Verticals |
| `is_industry_estimated` | Is Industry Estimated |
| `company_funding_amount_usd` | Total Funding Amount (in USD) |
| `company_last_funding_date` | Last Funding Date |
| `company_last_funding_amount_usd` | Last Funding Amount (in USD) |
| `company_investors` | Investors |