{"uid":"cap_9IGGajwBigCzD7RGpedc-","slug":"token-bid-ask-spread-local-finite-change-elasticity-e3566dbb","name":"Token Bid-Ask Spread Local Finite-Change Elasticity","description":"Token bid-ask spread — Local finite-change elasticity: Local finite-change elasticity for Token bid-ask spread. Supplied token observations only. Deterministic calculation or caller-threshold verdict, not a live scan, safety proof or trade recommendation. Specialised preset in a shared 50-profile, 20-operation engine. 0.01 USDC includes one bounded local finite-change elasticity report.","url":"https://market.datapackvibe.com/x402/assistant-bx-token-quote-spread-elasticity?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"field":{"enum":["ask","bid"],"type":"string","default":"ask"},"baseline":{"type":"object","default":{"ask":1.02,"bid":0.98},"required":["ask","bid"],"properties":{"ask":{"type":"number","default":1.02,"maximum":10000000000000000,"minimum":0,"exclusiveMinimum":0},"bid":{"type":"number","default":0.98,"maximum":10000000000000000,"minimum":0,"exclusiveMinimum":0}},"additionalProperties":false},"step_percent":{"type":"number","default":1,"maximum":10,"minimum":0.01}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_b4Yvmn9ogbE0d-IUGljJ2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes local finite-change elasticity for a token's bid-ask spread given supplied baseline quote observations and a step percentage.","exampleAgentPrompt":"Calculate the local finite-change elasticity for a token's ask spread using a baseline bid of 0.98 and ask of 1.02, stepping 1 percent — I want to see how elastic the ask side is.","exampleUseCases":[{"title":"Spread sensitivity check before trade","prompt":"Before I place this token order, can you run a local finite-change elasticity calculation on the ask side using a baseline bid of 0.95 and ask of 1.05 with a 0.5 percent step, so I know how sensitive the spread is?"},{"title":"Comparing bid vs ask elasticity","prompt":"Run two elasticity reports for me — one for the bid field and one for the ask field — both using a baseline of bid 0.97 and ask 1.03 with a 2 percent step, so I can compare which side is more elastic."},{"title":"Automated market monitoring alert threshold","prompt":"Check the bid-ask spread elasticity for this token using baseline bid 0.90 and ask 1.10 at a 1 percent step, and tell me the elasticity value so I can decide if it crosses my alert threshold."}],"resultDescription":"A bounded local finite-change elasticity report for the selected field (bid or ask) of the token's bid-ask spread, computed deterministically from the supplied baseline prices and step percentage. Returns a numeric elasticity value or threshold verdict, not a live market scan or trade recommendation.","failureModes":["Invalid field value (not 'bid' or 'ask') returns a validation error","Baseline bid or ask at or below zero returns a minimum-value constraint error","step_percent outside the 0.01–10 range returns a bounds error","Missing or malformed baseline object returns a schema validation error","Payment not included or insufficient USDC causes a 402 payment required response"],"whenToPreferThis":"Use this endpoint when you need a deterministic, single-point local elasticity measure for a token's bid-ask spread from your own supplied quote observations, rather than a live market data scan or a full scenario grid. It is ideal when you have a known baseline and want a fast, cheap ($0.01 USDC) finite-difference sensitivity estimate for the spread on either the bid or ask side.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T18:48:04.587Z","isFirstParty":false,"canonicalSlug":"token-bid-ask-spread-local-finite-change-elasticity-e3566dbb"}