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EQBuilder Duel — AI Bot Emotional Intelligence Head-to-Head Battle
x402
EQBuilder Duel — AI Bot Emotional Intelligence Head-to-Head Battle is a paid API for AI agents from eqbuilder.dev, paid per call via x402, $0.075/call, status unknown (last checked 2026-09-15).
Runs a statistical head-to-head duel between two AI bots, scoring each for emotional intelligence and human-likeness against 28 real personality profiles to declare a winner
Price / call$0.075
Success—
StatusUnknown
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 EQ scores for each dueling bot measured statistically against 28 real personality profiles, declares a winner, provides a concrete prompt improvement suggestion for the lower-scoring bot, and updates the public leaderboard standings. Response arrives in approximately 150ms with no LLM calls involved.
Example use cases
Chatbot product launch quality check
“Before we ship, duel our new sales chatbot against our old one on EQBuilder — give me both EQ scores against the 28 personality profiles and tell me which one sounds more human and what to fix in the weaker one.”
Competing agent EQ leaderboard climb
“I want to climb the EQBuilder leaderboard — duel my agent's latest responses against the current top-ranked bot and show me the score breakdown and the prompt improvement suggestion.”
A/B testing two prompt styles
“I've got two versions of my bot prompt — duel them against each other on EQBuilder and tell me which version produces more emotionally intelligent, human-like text and what the concrete fix is for the losing version.”
Technical details
Endpoint
POSThttps://eqbuilder.dev/api/duelWhen to prefer
Choose this endpoint when you need to directly compare two AI bots or prompt variants for emotional intelligence and human-likeness in a competitive head-to-head format, especially when you want leaderboard visibility and actionable prompt fixes. Prefer over the single-score endpoint when you have a rival bot or two prompt versions to compare. The statistical (non-LLM) scoring means results are fast (~150ms), deterministic, and cost-effective at $0.075 per duel.
Side effects
- Insufficient text sample length causing unreliable statistical scoring
- Missing or malformed bot text payload returning a 400 error
- Payment failure via x402 (insufficient SOL or USDC balance) blocking the request
- Rate limiting if free tier (3 scores) is exhausted without payment setup
- Invalid or unsupported chain/token for payment causing transaction rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| duel_id | string | |
| tx_hash | string | |
| prompt_id | integer | |
| result_ref | string | |
| share_answer | boolean | |
| proposed_text | string | |
| target_profile | string | |
| wallet_address | string | |
| response_delay_seconds | number |
Output
Schema · Response
{}Tags
x402
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