Base10 APIbase10.vc ↗
Access Base10 Partners portfolio company data via API. Returns company names, websites, sectors, investment years, and status for all active portfolio companies.
What is the Base10 API?
The Base10 Partners API exposes 1 endpoint — list_companies — that returns the full set of active portfolio companies with 7 standardized fields per record, including company name, website URL, sector, investment round, partner, status, and year of investment. It is suited for venture research tools, competitive intelligence dashboards, and startup database aggregation pipelines that need structured access to Base10's portfolio.
No input parameters required.
curl -X GET 'https://api.parse.bot/scraper/fe2d6983-1d18-4a28-bd6c-d98f9f22d9c5/list_companies' \ -H 'X-API-Key: $PARSE_API_KEY'
Typed, relational, agent-ready
A generated client with real types, enums, and the links between objects — the structure a flat JSON response can't carry. Autocompletes in your editor and reads cleanly to coding agents.
- Fully typed · autocompletes
- Objects link to objects
- Typed errors & pagination
Typed Python client. Set up the SDK in your uv project, then pull this API’s typed client:
uv add parse-sdk uv run parse init uv run parse add --marketplace base10-vc-api
uv run parse add --marketplace pulls a pinned snapshot of this canonical API — it won’t change underneath you. To customize it, subscribe and swap to your own copy.
"""Walkthrough: Base10 Partners Portfolio API — list and inspect portfolio companies."""
from parse_apis.base10_vc_api import Base10, ParseError
client = Base10()
# List all portfolio companies (capped for demo)
for company in client.companies.list(limit=5):
print(company.name, company.sector, company.year)
# Grab first company and inspect its details
first = client.companies.list(limit=1).first()
if first:
print(f"Company: {first.name}, Website: {first.website}, Status: {first.status}")
# Typed error handling
try:
for c in client.companies.list(limit=3):
print(c.name, c.website)
except ParseError as exc:
print(f"Error: {exc}")
print("exercised: companies.list")
Lists all portfolio companies from Base10 Partners. Returns the full set of active (non-archived) companies with standardized fields including name, website URL, sector/category, investment year, and status. Results are fetched across all pages from the underlying CMS in a single call.
No input parameters required.
{
"type": "object",
"fields": {
"total": "integer count of companies returned",
"companies": "array of company objects with name, website, round, partner, sector, status, year"
},
"sample": {
"data": {
"total": 151,
"companies": [
{
"name": "Phonely",
"year": "2025",
"round": null,
"sector": "Sales & Customer Support Automation",
"status": "active",
"partner": null,
"website": "https://phonely.ai"
},
{
"name": "Figma",
"year": "2021",
"round": null,
"sector": "Engineering Workflow Automation",
"status": "active",
"partner": null,
"website": "https://figma.com"
},
{
"name": "Brex",
"year": "2021",
"round": null,
"sector": "Function-in-a-Box",
"status": "active",
"partner": null,
"website": "https://brex.com"
}
]
},
"status": "success"
}
}About the Base10 API
What the API Returns
The list_companies endpoint returns a single response object containing a total integer and a companies array. Each element in that array includes: name (company display name), website (full URL), sector (industry category), round (investment round label), partner (associated Base10 partner), status (e.g. active), and year (year of investment). The endpoint takes no input parameters — it returns the complete active portfolio in one call.
Coverage and Scope
The data reflects Base10 Partners' publicly disclosed portfolio as maintained on their website at base10.vc/companies. Results cover non-archived companies across all investment stages present in Base10's portfolio. The year field lets you filter or sort programmatically by investment vintage, and sector enables grouping by industry vertical.
Practical Notes
Because the endpoint accepts no filters, all slicing and filtering happens on the client side after receiving the response. The total field gives you an immediate count of returned records without needing to measure the array length yourself. Fields like round and partner may be empty strings for companies where Base10 has not publicly disclosed that detail on their portfolio page.
The Base10 API is a managed, monitored endpoint for base10.vc — not a raw scraper you maintain. Every endpoint is automatically health-checked on a schedule, and when base10.vc changes and a check fails, the API is automatically queued for repair and re-verified. It is built to keep working as the site underneath it changes.
This isn't an official base10.vc API — it's an independent, maintained REST wrapper over public data. Where the source has no official API (or only a limited one), Parse gives you a stable contract over a source that never promised one, and keeps it current. Need a new endpoint or field? You can revise it yourself in plain English and the agent rebuilds it against the live site in minutes — contributing the change back to the shared API is free.
Will this API break when the source site changes?+
Is this an official API from the source site?+
Can I fix or extend this API myself if I need a new endpoint or field?+
What happens if I call an endpoint that has an issue?+
- Build a venture capital research dashboard that maps Base10 portfolio companies by sector and investment year.
- Aggregate portfolio data across multiple VC firms by combining the
nameandwebsitefields with other fund APIs. - Track Base10's investment activity over time using the
yearfield to identify vintage distribution. - Enrich a startup database by cross-referencing
websiteURLs against domain-based firmographic sources. - Generate sector concentration reports using the
sectorfield to group and count portfolio companies. - Identify which Base10 partners are most active in specific verticals using the
partnerandsectorfields together.
| Tier | Price | Credits/month | Rate limit |
|---|---|---|---|
| Free | $0/mo | 100 | 5 req/min |
| Hobby | $30/mo | 1,000 | 20 req/min |
| Developer | $100/mo | 5,000 | 100 req/min |
One credit = one API call regardless of which marketplace API you call. Exceeding the rate limit returns a 429 response. Authenticate with the X-API-Key header.
Does Base10 Partners offer an official developer API?+
What does the `list_companies` endpoint actually return per company?+
name, website, round, partner, sector, status, and year. Some fields such as round or partner may be empty where Base10 has not publicly disclosed that information for a given portfolio company.Can I filter results by sector or investment year through the API?+
list_companies endpoint takes no input parameters — it always returns the full active portfolio. Filtering by sector, year, round, or any other field must be done client-side after receiving the response array.