# Fiber AI Natural Language Company Search

> Fiber AI Natural Language Company Search is a paid API for AI agents from Fiber AI API at mpp.orthogonal.com, paid per call via MPP, price unknown, status unknown (last checked 2026-10-09).

Accepts a free-form natural language description of companies and returns a list of matching companies that fit the criteria

## Facts

- Endpoint: POST https://mpp.orthogonal.com/fiber/v1/natural-language-search/companies?utm_source=zero.xyz
- Price: price unknown
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-09
- Activations on Zero: 0
- Provider: Fiber AI API
- Docs: https://api.fiber.ai
- Website: https://api.fiber.ai
- Tags: contacts, email, phone, enrichment, data
- Canonical page: https://www.zero.xyz/c/fiber-ai-api-fiber-ai-natural-language-company-search-15c54c5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J35Msk0U6X8fgCo963xyG

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 fiber-ai-api-fiber-ai-natural-language-company-search-15c54c5f -d '<json body>'
```

Example prompt: Find me a list of Series A fintech startups in the US with between 50 and 200 employees using Fiber AI's natural language company search.

## When to prefer this

Use this endpoint when you want to discover companies using a conversational, free-form description rather than structured filters. It is ideal for exploratory searches where you do not know the exact filter parameters upfront, or when the criteria are complex enough that natural language is more expressive than checkboxes. Prefer the structured Company Search endpoint if you have precise, enumerable filter values and need deterministic, reproducible queries.

## Known failure modes

- Ambiguous or overly broad natural language query returns too many irrelevant results
- Very niche or highly specific queries may return zero results
- Query cannot be parsed into meaningful filters, returning an error or empty list
- Rate limiting or authentication errors if API key is invalid or quota exceeded

## How this service works

Takes free-form text (e.g., 'Series A startups in USA with 50–200 employees') and returns a list of matching companies.           The endpoint interprets natural language queries and applies structured filters such as industries, funding stages, headcount ranges, and locations to identify relevant companies. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

## Output

A list of companies matching the natural language description, likely including company names, sizes, locations, funding stages, and other firmographic details for each matched company.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fiber-ai-api-fiber-ai-natural-language-company-search-15c54c5f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mpp.orthogonal.com](https://www.zero.xyz/host/mpp.orthogonal.com/llms.txt)