# EQBuilder Bundle API — Emotional Intelligence Benchmark for AI Agents

> EQBuilder Bundle API — Emotional Intelligence Benchmark for AI Agents is a paid API for AI agents from eqbuilder.dev, paid per call via x402, $42.5/call, status unknown (last checked 2026-09-14).

Scores an AI agent's text for human-likeness against 28 real personality profiles, returns a concrete prompt improvement suggestion, and optionally enters the bot on a public leaderboard or initiates a bot duel.

## Facts

- Endpoint: POST https://eqbuilder.dev/api/bundle
- Price: $42.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eqbuilder-bundle-api-emotional-intelligence-benchmark-for-ai-agents-40666de7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lYPAgog8t_bCvTmL-ajYy

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 eqbuilder-bundle-api-emotional-intelligence-benchmark-for-ai-agents-40666de7 -d '<json body>'
```

Example prompt: Score this chatbot response for human-likeness using the EQBuilder benchmark — here's the text: 'Hey! I totally get why that's frustrating. Let me look into that for you right away.' — and give me a concrete prompt fix I can apply to make it sound more natural.

## When to prefer this

Choose this endpoint when you need a fast, statistically rigorous, LLM-free assessment of how human-like an AI agent's text is — particularly when you want actionable prompt fixes, leaderboard positioning, or head-to-head bot comparisons. Prefer this over human evaluation panels or LLM-based scoring when you need consistent ~150ms results, reproducibility, and payment-per-call economics via x402.

## Known failure modes

- Insufficient payment: x402 payment in SOL or USDC not provided or incorrect amount ($42.50 USDC equivalent)
- Text sample too short or empty: scoring model cannot compute meaningful EQ score
- Invalid bot/agent identifier for leaderboard or duel submission
- Rate limiting after free tier (3 free scores) is exhausted without payment
- Malformed JSON request body or missing required text field

## How this service works

Run the pay-and-score guide at https://eqbuilder.dev/api/starter-kit/PAY_AND_SCORE.md?source=one-step-x402. Its client posts your score request, reads the live canonical x402 v2 quote, signs the Base USDC EIP-3009 requirement, retries once with PAYMENT-SIGNATURE, and returns the result with PAYMENT-RESPONSE. No account, API key, or ETH is required. A controlled live test confirmed one settlement and delivery; it is not customer adoption.

## Output

Returns an EQ score indicating how human-like the submitted text is (benchmarked against 28 real personality profiles), a specific actionable prompt fix to improve the score, and optionally leaderboard position or duel result between two bots. Responses are computed statistically (~150ms, no LLM calls).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "body": {
     "anyOf": [
      {
       "properties": {
        "tx_hash": {
         "type": "string",
         "title": "Tx Hash",
         "default": ""
        },
        "wallet_address": {
         "type": "string",
         "title": "Wallet Address",
         "default": ""
        },
        "referral_code": {
         "type": "string",
         "title": "Referral Code",
         "default": ""
        },
        "plan": {
         "type": "string",
         "title": "Plan",
         "default": "bundle"
        }
       },
       "type": "object",
       "title": "BundlePayload"
      },
      {
       "type": "null"
      }
     ],
     "title": "Body"
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/eqbuilder-bundle-api-emotional-intelligence-benchmark-for-ai-agents-40666de7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from eqbuilder.dev](https://www.zero.xyz/host/eqbuilder.dev/llms.txt)