Crunchbase Funding Round Details API: Company and Investors

Retrieve a selected Crunchbase funding round to research its funded company, round context and reported investor relationships. The required funding_round string accepts a funding-round permalink, UUID or crunchbase.com/funding_round/ URL. It identifies one round rather than a company or a free-text deal search. There are no additional documented input parameters for this endpoint. No response was observed for this endpoint in the supplied evidence. Its documentation example is truncated and cannot be parsed as a complete JSON response. The complete fields visible before that truncation include id, name, link, company, company_diversity_spotlights, company_funding_total, amount, announced_on, closed_on, articles_count, investments, investors, investors_count, is_equity, lead_investors, post_money_valuation and pre_money_valuation. company contains id, uuid, name, type, link and image. Each visible investments entry contains id, name, investor, partners, is_lead_investor, amount_invested, announced_on, company, diversity_spotlights, funding_round, round_amount and round_type. Its investor object contains id, uuid, name, type, link and image; partner and lead-investor entries contain id, uuid, name, type and link. A press field begins in the example, but its content is incomplete. These are unverified example fields, not a complete or guaranteed response schema. The visible example has null amounts, announcement and closing dates, valuations, company funding total and equity status. Its investment-level round_type and lead-investor flag are also null. investors is empty despite a populated investors_count and separate investment records. Do not interpret null as zero, infer investor-list completeness from the count, or assume that this lookup fills missing financial or date fields from other research.

API Features

Single-round identifier lookup Resolve one selected funding round using its permalink, UUID or funding-round profile URL rather than searching by a company's name.

Funded-company profile context The unverified example links the round to a company object with its identifiers, name, entity type, profile link and image, plus company diversity labels.

Separate lead-investor references The visible documentation example includes lead_investors independently of investment entries and the investors array, supporting careful relationship comparison without assuming complete coverage.

Investor and partner associations Visible investment records nest investor identity and partner references. Investment amounts, round type and the lead-investor flag are present but null in the example.

Explicit financial-data gaps The example exposes null amounts, dates and valuations, allowing a research workflow to preserve unknown values instead of replacing them with inferred deal terms.

Live API Demo

GET /api/project/crunchbase/funding-round-details

API Response (JSON)

{}

curl -X GET 'https://api.opendata-api.com/api/project/crunchbase/funding-round-details?key=<API_KEY>&funding_round=openai-series-unknown--f23ea79d'

curl -X GET 'https://api.opendata-api.com/api/project/crunchbase/funding-round-details?key=<API_KEY>&funding_round=openai-series-unknown--f23ea79d'

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Use Cases

Expand a selected funding-round identifier into a deal-research brief connecting the funded company with available lead-investor and investment references.
Reconcile round-level investor relationships against company-level funding research while retaining missing dates and amounts as unknown.
Compare separate lead_investors references with nested investment records when reviewing a financing syndicate, without treating empty arrays as proof that no investors participated.
Inspect partner references attached to an investment as a starting point for analyst review of a firm's involvement in one selected financing.

Frequently asked questions

What identifier does funding_round require?

Provide a Crunchbase funding-round permalink, a funding-round UUID or a crunchbase.com/funding_round/ URL. For example, openai-series-unknown--f23ea79d is a documented permalink. A company identifier is not the documented input for this endpoint.

Does this endpoint search for all rounds raised by a company?

No. It takes one required funding_round value and retrieves a selected round. No company-search, date-filter or pagination input is documented for this operation.

Will it always return a funding amount, valuation and announcement date?

No. The visible documentation example has null amount, announced_on, closed_on, pre_money_valuation and post_money_valuation values. Do not interpret those nulls as zero or assume this lookup can fill values missing from company-level research.

How should I interpret investors_count when investors is empty?

Keep the count and returned relationships separate. The documentation example has an empty investors array alongside a populated investors_count, investment entries and lead_investors. It does not establish a complete investor list or prove that an empty array means no investors participated.

Can I rely on the documentation example as a complete funding-round schema?

No. No response was observed for this endpoint, and the supplied documentation example is truncated within press. The visible fields describe possible round, company and investment context only; they do not verify the full schema, complete press content or consistent field population.

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Look up a funding round and its investor relationships