REST API
OAuth2 client-credentials, an OpenAPI 3.1 contract and idempotent job submission. Start a discovery, poll it, page through prospects, acknowledge what you have consumed.
B2B prospect discovery with registry IDs
Prosp finds, validates and enriches B2B company prospects from the live web. Describe the companies you want to reach; Prosp searches the web, crawls each candidate's website, checks it against your criteria and returns the companies that pass, with the funnel that explains the count. Use it from a REST API, from ChatGPT or Claude over MCP, or from a Telegram bot.
How a discovery run works
- Describe the companies you want. A sentence of intent plus optional industries, countries or regions, company sizes, keywords and exclusions. Save it as a reusable ICP if you will run it again.
- Prosp searches and checks every candidate. Candidates come from several web search and language-model sources. Each one's domain is resolved and its website crawled, then it is scored against your criteria and, where an official company register is available, checked against it.
- You get the companies that passed, and the funnel behind them. Each delivered company carries its firmographics, location and the business contacts Prosp found for it. The result also reports how many candidates were screened and evaluated and why the run stopped, so a thin result explains itself.
A run costs 100 credits and typically takes 5–25 minutes. Results arrive progressively while it runs.
Three ways in, one API underneath
MCP for ChatGPT and Claude
Add https://api.prosp.cc/mcp-rpc as a remote MCP server and ask for prospects in a
chat. Sign in with Telegram; there is no key to paste.
Telegram bot
Buy credits with Telegram Stars, run discoveries with /find, read results, and get
your API credentials, in 14 languages.
All three surfaces return the same customer-safe field set, enforced at the API gateway: internal scores and raw crawled content never leave the platform.
Use cases from real runs
Each article is rendered from one real run: the exact request, the companies that came back, how many candidates were rejected and for which reasons, and what went wrong.
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Packaging supplier → food and beverage producers in Czechia: what one real Prosp run returned
A real production run: 8 of 8 Czech food and drink producers in 9.5 minutes. 5 carry an IČO and all 5 matched the ARES register. One large dairy slipped through.
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3PL provider → exporting manufacturers in Finland: what one real Prosp run returned
A real production run: first held by a low-yield warning at no charge, then run: 8 of 8 Finnish manufacturers in under 10 minutes; 4 Business IDs matched the register.
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Cosmetics contract manufacturer → indie beauty brands in France: what one real Prosp run returned
A real production run: 8 of 8 French beauty brands in 14 minutes. Both SIREN numbers matched the official register; Nuxe slipped past the micro/small request.
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Automation integrator → machine builders in Germany: what one real Prosp run returned
A real production run: 8 of 8 German machine builders, served in 4 s from Prosp's knowledge base. Both German register ids it returned belong to the wrong company.
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Polish grocery chain → fruit and vegetable growers in Spain: what one real Prosp run returned
A real production run: 8 of 8 Spanish fruit and vegetable producers, served in 11 s from Prosp's knowledge base rather than a fresh search. 1 of 8 has a tax id.
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UK clothing brand → fashion distributors and retailers in the UAE and Saudi Arabia: what one real Prosp run returned
A real production run: 8 of 8 fashion distributors and retailers in the UAE and Saudi Arabia in 11 minutes. No register to check there, and one dead storefront.
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Wood-processing equipment dealer → sawmills in Finland: what one real Prosp run returned
Prosp delivered 8 of 8 target companies in 47 minutes 39 seconds.