Private Beta

Programmable intelligence
for private markets.

Pull fund intelligence, surface new opportunities, and push diligence questions into the network, all within the tools and agents your team already uses.

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Example · Push a diligence question

curl 
POST api.thesideletter.co/v1/funds/benchmark-capital/questions

{
  "question": "What's changed in their LP base since Fund VIII?"
}


// Response

{
  "answer":        "Meaningfully more institutional since Fund VIII...",
  "confidence":     "high",
  "open_questions": ["GP commit structure?"],
  "last_updated":   "2026-03-28"
}