{"uid":"cap_4OiEghf0ETeomlPsMGPxu","slug":"mac-to-eui-64-ipv6-link-local-converter-453e1bc6","name":"MAC to EUI-64 / IPv6 Link-Local Converter","description":"Derive the modified EUI-64 interface identifier from a 48-bit MAC (insert FFFE, flip the U/L bit) and the resulting IPv6 link-local address (fe80::/64).","url":"https://macaddress.openverbs.com/v1/to-eui64","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":["address"],"properties":{"address":{"type":"string","maxLength":64,"minLength":1,"description":"MAC address in colon, hyphen, dot or bare notation."}},"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_3_ByMM4IWiI9H_2Gn4x2n","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":"Derives the modified EUI-64 interface identifier and IPv6 link-local address (fe80::/64) from a 48-bit MAC address by inserting FFFE and flipping the U/L bit.","exampleAgentPrompt":"Convert the MAC address 00:1A:2B:3C:4D:5E to its modified EUI-64 interface identifier and tell me the resulting IPv6 link-local address.","exampleUseCases":[{"title":"Network device IPv6 address discovery","prompt":"I have a device with MAC address 08:00:27:ab:cd:ef — what would its IPv6 link-local address be using SLAAC?"},{"title":"IPv6 SLAAC configuration validation","prompt":"Can you derive the EUI-64 interface identifier and fe80 link-local address for the MAC AC:DE:48:23:45:67 so I can verify our router's autoconfiguration is correct?"},{"title":"Network inventory enrichment","prompt":"Take this Cisco-format MAC address 0800.2745.ae32 and give me the full IPv6 link-local address it would generate via modified EUI-64."}],"resultDescription":"Returns the modified EUI-64 interface identifier (64-bit) derived by inserting FFFE between the OUI and NIC-specific portions of the MAC and flipping the universal/local bit, along with the resulting IPv6 link-local address in fe80::/64 format.","failureModes":["Invalid or malformed MAC address input returns an error (e.g. wrong length, illegal characters)","MAC address outside valid EUI-48 range may be rejected","Empty or missing 'address' field returns a validation error","Multicast MACs may produce unexpected or flagged results"],"whenToPreferThis":"Use this endpoint when you need to deterministically compute the IPv6 link-local (fe80::/64) address or modified EUI-64 interface identifier from a known MAC address, especially for SLAAC network configuration, IPv6 inventory enrichment, or validating autoconfigured addresses. Prefer this over manual computation or general-purpose networking libraries when operating in an agent pipeline that needs a simple, reliable API call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:41:23.321Z","isFirstParty":false}