Inputs
| Field | Type | Valid domain |
|---|---|---|
| safeInvestment | float | 25,000 – 5,000,000 |
| postMoneyValuationCap | float | 500,000 – 100,000,000 |
| newInvestorsPct | float | 0.05 – 0.4 |
| optionPoolIncreasePct | float | 0 – 0.15 |
- postMoneyValuationCap must be ≥ 2 × safeInvestment (a SAFE selling more than half the company is rejected, never adjusted). Valuation-cap post-money SAFE only — discount-only and MFN variants are out of scope.
- safePctPostSafes and safePctPostRound are FLOORS: if the priced round values the company at or too close to the post-money cap, the SAFE converts into MORE than investment ÷ cap (Safe User Guide warning). The model assumes a round comfortably above the cap.
All fields required. Out-of-domain values are rejected with per-field errors — never clamped. Unknown fields are rejected.
Live example — generated from the real engine
Request
POST /api/v1/models/safe-dilution
{
"safeInvestment": 2513000,
"postMoneyValuationCap": 50250000,
"newInvestorsPct": 0.23,
"optionPoolIncreasePct": 0.08
}Response (chart arrays compacted)
{
"ok": true,
"model": "safe-dilution",
"specVersion": "1.0.0",
"contractUrl": "/api/v1/models/safe-dilution",
"specUrl": "/api/v1/models/safe-dilution/spec",
"inputs": {
"safeInvestment": 2513000,
"postMoneyValuationCap": 50250000,
"newInvestorsPct": 0.23,
"optionPoolIncreasePct": 0.08
},
"outputs": {
"safePctPostSafes": 0.05000995024875622,
"foundersPctPostSafes": 0.9499900497512438,
"roundDilution": 0.31,
"safePctPostRound": 0.03450686567164179,
"foundersPctPostRound": 0.6554931343283582,
"foundersTotalDilution": 0.3445068656716418
},
"sentinels": [],
"assumptions": [
"Implements model spec safe-dilution v1.0.0 (dual-implementation verified).",
"postMoneyValuationCap must be ≥ 2 × safeInvestment (a SAFE selling more than half the company is rejected, never adjusted). Valuation-cap post-money SAFE only — discount-only and MFN variants are out of scope.",
"safePctPostSafes and safePctPostRound are FLOORS: if the priced round values the company at or too close to the post-money cap, the SAFE converts into MORE than investment ÷ cap (Safe User Guide warning). The model assumes a round comfortably above the cap."
],
"facts": [],
"record": {
"sha256": "f0ee60870ae69b99675686a326f9cb23c928b927512d1674820493424675691b",
"fields": [
"model",
"specVersion",
"inputs",
"outputs"
],
"howToVerify": "Store this record with any advice or agent output built on these numbers. To verify later: build {model, specVersion, inputs, outputs} from the stored response, serialize as JSON with object keys sorted recursively (no whitespace), and SHA-256 it — a match proves the numbers came from this spec version with these inputs, unaltered."
},
"disclaimer": "Illustrative planning model, not financial advice. Outputs follow the published model spec exactly; read the spec for assumptions and exclusions before relying on any number."
}This example is executed against the production engine when the page builds — it cannot drift from the API's real behavior.