# US IPO Pipeline — Companies in Registration (S-1/F-1)

> US IPO Pipeline — Companies in Registration (S-1/F-1) is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a filterable list of US companies currently in SEC registration (S-1/F-1), including stage, signal strength, SIC code, foreign/domestic status, and amendment history.

## Facts

- Endpoint: GET https://x402.professorsausages.com/ipo-calendar/pipeline
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/us-ipo-pipeline-companies-in-registration-s-1-f-1-2b08cb5a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bH2GQr7IIdxKu1W8EKBSu

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability us-ipo-pipeline-companies-in-registration-s-1-f-1-2b08cb5a
```

Example prompt: Show me all companies currently in the 'expected' stage of US IPO registration, filtering for domestic S-1 filers only — I want to see their names, SIC descriptions, signal strength, and how many amendments they've filed.

## When to prefer this

Use this endpoint when you need a broad, filterable view of the current US IPO pipeline across all companies in SEC registration. Prefer this over the 'imminent IPO' endpoint when you want the full funnel (registered/dormant/expected stages) rather than only near-term listings. Prefer over per-issuer endpoints when screening across the market rather than deep-diving one company.

## Known failure modes

- Invalid filter parameter returns 400 with validation error
- No companies match the applied filters — returns count:0 and empty companies array
- Cursor token is stale or malformed — returns 400 or empty result
- Service temporarily unavailable — returns 402 or 5xx
- SIC code not recognized — may return empty result set

## How this service works

US IPO pipeline — companies currently in registration (S-1/F-1), filterable by stage, recency, SIC and domestic/foreign

## Output

Returns a paginated list of companies in the SEC IPO registration pipeline, each with CIK, company name, registration form (S-1/F-1), pipeline stage (registered/expected/dormant), signal strength (strong/moderate/weak), SIC code and description, first filed and last activity dates, amendment count, SPAC flag, foreign private issuer flag, EDGAR link, and effect/8-A12B signal timestamps. Includes total count and a nextCursor for pagination.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/us-ipo-pipeline-companies-in-registration-s-1-f-1-2b08cb5a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.professorsausages.com](https://www.zero.xyz/host/x402.professorsausages.com/llms.txt)