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Welcome to Nexio

Nexio is a placement inference API — a programmatic engine for evaluating entity profiles against large candidate pools and returning ranked, reasoned results. You describe what you’re looking for. Nexio tells you who fits, how well they fit, and why — across thousands of candidates in seconds.

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What Nexio does

Given an entity profile and a candidate pool, Nexio runs a structured three-stage evaluation pipeline:
  1. Filter — eliminates candidates that don’t meet hard eligibility criteria (jurisdiction, licensing, regulatory requirements)
  2. Assess — scores remaining candidates across six configurable dimensions using categorical ratings (L1–L4)
  3. Rank & Trace — assigns tier designations, produces reasoning, and generates a full audit trail
Every evaluation is asynchronous. You submit a job, Nexio processes it, and delivers results to your webhook or makes them available to poll.

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Who it’s for

Nexio is built for developers and engineering teams integrating placement inference into their products. If you’re building workflows that need to match, rank, or recommend candidates against profiles at scale — Nexio’s API handles the inference layer.

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What you get back

{
  "eval_id": "eval_7xKp2mNc",
  "status": "completed",
  "pool_size": 1847,
  "filtered": 53,
  "candidates": [
    {
      "tier": "STRONG_FIT",
      "name": "Hartford Financial",
      "confidence": "HIGH",
      "scores": {
        "appetite": "L1",
        "coverage": "L2",
        "financial": "L1",
        "pricing": "L1",
        "placement": "L1",
        "service": "L2"
      },
      "reasoning": "Strong CA prof. liability appetite, $10–15M band..."
    }
  ],
  "audit": "https://api.usenexio.com/traces/eval_7xKp2mNc"
}
Results include tier buckets (STRONG_FIT, MODERATE_FIT, WEAK_FIT, NO_FIT), per-dimension scores, human-readable reasoning, and a link to the full audit trace.

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Next steps

Quickstart

Get your first evaluation result in under 5 minutes.

Key Concepts

Understand evaluations, tiers, and the scoring model.

Authentication

Learn how API key authentication works.

API Reference

Full endpoint documentation with request/response specs.