aid: kintsugi url: https://raw.githubusercontent.com/api-evangelist/kintsugi/refs/heads/main/apis.yml name: Kintsugi kind: company description: Kintsugi is an AI-driven sales tax compliance and automation platform that calculates US sales tax, VAT, and GST in real time, monitors economic and physical nexus, manages exemptions and registrations, and auto-prepares and files returns. Its REST API exposes tax estimation, transactions, products, address validation, nexus, exemptions, registrations, and filings, authenticated with an API key plus organization ID header. image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg tags: - Sales Tax - Tax Compliance - Tax Automation - VAT - GST - Nexus - AI created: '2026-06-21' modified: '2026-06-21' specificationVersion: '0.19' apis: - aid: kintsugi:tax-calculations name: Kintsugi Tax Calculations API tags: - Tax Calculation - Tax Estimate - Sales Tax image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://docs.trykintsugi.com/docs/api-guides/sales-tax-calculations baseURL: https://api.trykintsugi.com/v1 properties: - url: https://docs.trykintsugi.com/docs/api-guides/sales-tax-calculations type: Documentation - url: https://docs.trykintsugi.com/reference/api/tax-estimation/estimate-tax type: APIReference - url: openapi/kintsugi-openapi.yml type: OpenAPI - url: collections/kintsugi.postman_collection.json type: PostmanCollection - url: collections/kintsugi.opencollection.json type: OpenCollection description: Calculates sales tax, VAT, and GST for a transaction before payment via POST /tax/estimate, returning jurisdiction-level tax breakdown, taxable amount, effective rate, and active-registration status without persisting a record. - aid: kintsugi:transactions name: Kintsugi Transactions API tags: - Transactions - Credit Notes - Filings image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://docs.trykintsugi.com/docs/api-guides/syncing-transaction-records baseURL: https://api.trykintsugi.com/v1 properties: - url: https://docs.trykintsugi.com/docs/api-guides/syncing-transaction-records type: Documentation - url: https://docs.trykintsugi.com/reference/api/transactions/create-transaction type: APIReference - url: openapi/kintsugi-openapi.yml type: OpenAPI - url: collections/kintsugi.postman_collection.json type: PostmanCollection - url: collections/kintsugi.opencollection.json type: OpenCollection description: Creates, retrieves, and updates committed sales transactions and credit notes, with lookup by Kintsugi ID, external ID, customer, or filing, to drive accurate liability and return preparation. - aid: kintsugi:products name: Kintsugi Products and Tax Codes API tags: - Products - Tax Codes - Product Categories image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://docs.trykintsugi.com/docs/api-guides/product-customer-records baseURL: https://api.trykintsugi.com/v1 properties: - url: https://docs.trykintsugi.com/docs/api-guides/product-customer-records type: Documentation - url: https://docs.trykintsugi.com/reference/api/products/create-product type: APIReference - url: openapi/kintsugi-openapi.yml type: OpenAPI - url: collections/kintsugi.postman_collection.json type: PostmanCollection - url: collections/kintsugi.opencollection.json type: OpenCollection description: Manages product records and their taxability classification, including listing product categories used to map catalog items to the correct tax treatment across jurisdictions. - aid: kintsugi:addresses-nexus name: Kintsugi Addresses and Nexus API tags: - Address Validation - Nexus - Registrations image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://docs.trykintsugi.com/reference/api/address-validation/search baseURL: https://api.trykintsugi.com/v1 properties: - url: https://docs.trykintsugi.com/reference/api/address-validation/search type: Documentation - url: https://docs.trykintsugi.com/reference/api/nexus/get-nexus-for-org type: APIReference - url: openapi/kintsugi-openapi.yml type: OpenAPI - url: collections/kintsugi.postman_collection.json type: PostmanCollection - url: collections/kintsugi.opencollection.json type: OpenCollection description: Validates and suggests addresses for accurate jurisdiction assignment, and manages physical nexus and state registrations so liability tracking reflects where the business is obligated to collect tax. - aid: kintsugi:exemptions name: Kintsugi Exemptions API tags: - Exemptions - Certificates - Compliance image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://docs.trykintsugi.com/reference/api/exemptions/get-exemptions baseURL: https://api.trykintsugi.com/v1 properties: - url: https://docs.trykintsugi.com/reference/api/exemptions/get-exemptions type: Documentation - url: https://docs.trykintsugi.com/reference/api/exemptions/create-exemption type: APIReference - url: openapi/kintsugi-openapi.yml type: OpenAPI - url: collections/kintsugi.postman_collection.json type: PostmanCollection - url: collections/kintsugi.opencollection.json type: OpenCollection description: Creates and lists customer tax exemptions and uploads or retrieves exemption certificate attachments, so exempt sales are excluded from calculated liability with documentation on file. - aid: kintsugi:filings name: Kintsugi Filings API tags: - Filings - Returns - Registrations image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://docs.trykintsugi.com/reference/api/filings/get-filings baseURL: https://api.trykintsugi.com/v1 properties: - url: https://docs.trykintsugi.com/reference/api/filings/get-filings type: Documentation - url: https://docs.trykintsugi.com/reference/api/filings/get-filing-by-id type: APIReference - url: openapi/kintsugi-openapi.yml type: OpenAPI - url: collections/kintsugi.postman_collection.json type: PostmanCollection - url: collections/kintsugi.opencollection.json type: OpenCollection description: Retrieves prepared and submitted sales tax returns, including filings by ID and by registration, giving programmatic visibility into the automated filing lifecycle Kintsugi runs on the customer's behalf. - aid: kintsugi:webhooks name: Kintsugi Webhooks tags: - Webhooks - Events - Notifications image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://docs.trykintsugi.com/docs/guides/integrating-kintsugis-api baseURL: https://api.trykintsugi.com/v1 properties: - url: https://docs.trykintsugi.com/docs/guides/integrating-kintsugis-api type: Documentation - url: openapi/kintsugi-openapi.yml type: OpenAPI description: Event notifications that let integrations react to changes such as nexus thresholds being approached, registrations completing, and filings being prepared or submitted, keeping external systems in sync with compliance state. common: - type: GitHubOrganization url: https://github.com/kintsugi-tax - type: LinkedIn url: https://www.linkedin.com/company/trykintsugi - type: Website url: https://www.trykintsugi.com - type: Documentation url: https://docs.trykintsugi.com - type: Plans url: plans/kintsugi-plans-pricing.yml - type: RateLimits url: rate-limits/kintsugi-rate-limits.yml - type: FinOps url: finops/kintsugi-finops.yml maintainers: - FN: Kin Lane email: kin@apievangelist.com