{"uid":"cap_i65A2qGNBao-Oy68mbunO","slug":"geospatial-resolution-scale-denominator-calculator-f499a0f3","name":"Geospatial Resolution & Scale Denominator Calculator","description":"Report the ground resolution (metres per pixel, for 256-px tiles) and the OGC map scale denominator at a zoom level, optionally adjusted for latitude (default equator).","url":"https://geospatial.openverbs.com/v1/resolution","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["zoom"],"properties":{"lat":{"type":"number","maximum":90,"minimum":-90,"description":"Latitude for the cos(lat) correction. Default 0."},"zoom":{"type":"integer","maximum":30,"minimum":0,"description":"Zoom level."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_QZDs1iFwSQjVKsiGKpbDn","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the ground resolution in metres per pixel (for 256-px tiles) and the OGC map scale denominator for a given slippy-map zoom level, with optional latitude correction.","exampleAgentPrompt":"What's the ground resolution in metres per pixel and the OGC scale denominator for zoom level 14, corrected for latitude 51.5?","exampleUseCases":[{"title":"Tile resolution for map labelling","prompt":"I'm building a map renderer and need to know the ground resolution in metres per pixel for zoom level 12, corrected for latitude 48.8 — what is it?"},{"title":"OGC scale for print cartography","prompt":"Can you get me the OGC map scale denominator at zoom level 17 so I know what scale to print on my cartographic output?"},{"title":"Equatorial baseline resolution check","prompt":"What's the metres-per-pixel resolution at zoom level 0 at the equator — I need the baseline tile resolution for my global overview map."}],"resultDescription":"Returns the ground resolution in metres per pixel for a 256-px slippy-map tile at the specified zoom level (optionally cosine-corrected for the given latitude), along with the OGC map scale denominator corresponding to that zoom level.","failureModes":["Missing required 'zoom' field returns a validation error","Zoom level outside 0–30 range is rejected with a range error","Latitude outside -90 to 90 degrees is rejected with a validation error","Invalid body type or malformed JSON returns a parsing error","Payment not included or insufficient triggers a 402 Payment Required response"],"whenToPreferThis":"Choose this endpoint when you need precise ground resolution (metres per pixel) or OGC scale denominator values for slippy-map (XYZ/OSM/Google) tiles at a specific zoom level. Especially useful when latitude-corrected resolution is needed (e.g. for tiles far from the equator). Prefer this over manual calculation to avoid projection errors in Web Mercator.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T13:02:23.708Z","isFirstParty":false}