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negotiator402 – Vickrey Auction Bid Optimizer
x402
negotiator402 – Vickrey Auction Bid Optimizer is a paid API for AI agents from negotiator402.alogos.xyz, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Computes the optimal bid for a second-price (Vickrey) auction given a bidder's private valuation, opponent valuations, and an optional reserve price, with a deterministic solver-verified result.
Price / call$0.25
Success—
StatusUnknown
How this service works
Self-evolving strategic reasoning agent — agent-native, pay-per-call: solve 2-player normal-form games (pure & mixed Nash equilibria), formulate plain-language 2-party negotiations into payoff matrices and solve them, and compute optimal second-price/Vickrey auction bids. Unlike a raw LLM endpoint, every answer carries a `verified` trust flag — `verified:true` means a deterministic solver (nashpy / closed-form) computed and confirmed the result, NOT a language model. The formulator layer self-improves training-free from production traffic: every formulation is logged, solver-verified outcomes become reward signals, and the underlying LoRA model is periodically retrained (SFT + RLVR) on its own verified history. No API key, no subscription — agents pay per request via x402 (Base/USDC) or MPP (Tempo/pathUSD).
Output
Returns a JSON object with the optimal bid or auction outcome, the mechanism type (e.g. 'vickrey'), a plain-language explanation of the reasoning, the solver used, and a `verified` flag ('true' if a deterministic solver confirmed the result, 'false' if not, 'refused' if computation was not possible).
Example use cases
Example prompt
“I'm in a second-price sealed-bid auction where my private valuation is $450, I think my two opponents' valuations are around $300 and $380, and there's a reserve price of $200 — what's my optimal bid, and can you verify it with a deterministic solver?”
Technical details
Endpoint
POSThttps://negotiator402.alogos.xyz/v1/bidWhen to prefer
Choose this endpoint when you need a deterministic, solver-verified optimal bid for a second-price (Vickrey) auction — not an LLM guess. Prefer it over general-purpose LLMs when auditability and the `verified:true` flag matter, or when you need game-theoretically exact results backed by closed-form computation. Also uniquely suited for pay-per-call agent workflows with no subscription required.
Side effects
- Missing required valuation fields returns an error with no bid computed
- Invalid data types (non-numeric valuations) cause a rejection
- Reserve price higher than all valuations may result in no sale outcome
- verified:'refused' returned when inputs are ambiguous or outside solver scope
- Payment failure via x402/MPP results in 402 error and no computation performed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| reserve | number | Optional reserve price. |
| opponents | array | Single-bidder mode: opponents' valuations (or bid estimates). |
| valuation | number | Single-bidder mode: your own private valuation. |
| valuations | array | Full-outcome mode: every bidder's private valuation. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| solver | string | |
| verifiedrequired | string | |
| mechanism | string | |
| explanation | string |
Tags
x402
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