name: flatin.pt
description: >-
  Portuguese property-tax APIs providing keyless access to IMI rates for all 308 municipalities and IMT/stamp duty
  purchase-cost calculations, sourced from official Autoridade Tributária tables. flatin.pt serves the same numbers as a
  REST API with an OpenAPI schema, a remote MCP server exposing four agent tools, an llms.txt for agent discovery, and a
  CC BY 4.0 open CSV dataset — no key and no sign-up.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - flatinpt/mcp
  open_source: unknown
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
image: https://flatin.pt/assets/brand/raster/icon-256.png
url: https://raw.githubusercontent.com/api-evangelist/flatin-pt/refs/heads/main/apis.yml
created: '2026-09-16'
modified: '2026-10-06'
specificationVersion: '0.21'
tags:
  - Real Estate
  - Property Tax
  - Tax
  - IMI
  - IMT
  - Stamp Duty
  - Portugal
  - Open Data
  - Government Data
  - Fiscal Data
  - MCP
  - AI Agents
tags_raw:
  - Real Estate
  - Property Tax
  - Taxes
  - IMI
  - IMT
  - Stamp Duty
  - Portugal
  - Open Data
  - Government Data
  - Fiscal Data
  - MCP
  - AI Agents
  - Real-Estate
apis:
- aid: flatin-pt:flatin-pt-public-api
  name: flatin.pt Public API
  description: 'Keyless public endpoints: IMI rates and IMT calculation.'
  humanURL: https://flatin.pt/en/tools/api-and-data/
  baseURL: https://flatin.pt/api/v1
  tags:
  - Public
  tags_raw:
  - public
  properties:
  - type: OpenAPI
    url: openapi/flatin-pt-public-api-openapi.yml
  - type: ToolCrosswalk
    url: mcp/flatin-pt-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/flatin-pt-llms.txt
  - type: Authentication
    url: authentication/flatin-pt-authentication.yml
  - type: Conventions
    url: conventions/flatin-pt-conventions.yml
  - type: Idempotency
    url: conventions/flatin-pt-conventions.yml
  - type: ErrorCatalog
    url: errors/flatin-pt-problem-types.yml
  - type: DataModel
    url: data-model/flatin-pt-data-model.yml
  - type: Conformance
    url: conformance/flatin-pt-conformance.yml
  - type: RateLimits
    url: rate-limits/flatin-pt-rate-limits.yml
  - type: Plans
    url: plans/flatin-pt-plans-pricing.yml
  - type: ChangeLog
    url: changelog/flatin-pt-changelog.yml
  - type: Lifecycle
    url: lifecycle/flatin-pt-lifecycle.yml
  - type: Dataset
    url: https://flatin.pt/api/v1/imi/rates.csv
  - type: Documentation
    url: https://flatin.pt/en/tools/api-and-data/
maintainers:
  - FN: HOLY CHAOS, UNIPESSOAL LDA (flatin.pt)
    email: info@flatin.pt
    url: https://flatin.pt/en/
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 97
  at: '2026-09-16T11:39:19.753Z'
common:
  - type: Plans
    url: plans/flatin-pt-plans-pricing.yml
  - url: https://flatin.pt/en/articles/
    type: Blog
  - type: Overlay
    url: overlays/flatin-pt-openapi-overlay.yaml
  - type: AgentSkill
    url: skills/_index.yml
  - type: Website
    url: https://flatin.pt/en/
  - type: DeveloperPortal
    url: https://flatin.pt/en/tools/api-and-data/
  - type: Documentation
    url: https://flatin.pt/en/tools/api-and-data/
  - type: GettingStarted
    url: https://flatin.pt/en/tools/api-and-data/#rest
  - type: APIReference
    url: https://flatin.pt/api/openapi.json
  - type: Pricing
    url: https://flatin.pt/api/plans.json
  - type: RateLimits
    url: rate-limits/flatin-pt-rate-limits.yml
  - type: StatusPage
    url: https://flatin.pt/status/
  - type: ChangeLog
    url: changelog/flatin-pt-changelog.yml
  - type: TermsOfService
    url: https://flatin.pt/en/legal/termos-utilizacao/
  - type: PrivacyPolicy
    url: https://flatin.pt/en/legal/privacidade/
  - type: Security
    url: security/flatin-pt-vulnerability-disclosure.yml
  - type: SecurityTxt
    url: well-known/flatin-pt-security.txt
  - type: VulnerabilityDisclosure
    url: security/flatin-pt-vulnerability-disclosure.yml
  - type: DomainSecurity
    url: security/flatin-pt-domain-security.yml
  - type: WellKnown
    url: well-known/flatin-pt-well-known.yml
  - type: APICatalog
    url: well-known/flatin-pt-api-catalog.json
  - type: SpectralRules
    url: rules/flatin-pt-spectral.yaml
  - type: LLMsTxt
    url: llms/flatin-pt-llms.txt
  - type: MCPServer
    url: mcp/flatin-pt-mcp.yml
  - type: SDKs
    url: packages/flatin-pt-packages.yml
  - type: Packages
    url: packages/flatin-pt-packages.yml
  - type: License
    url: https://creativecommons.org/licenses/by/4.0/
  - type: GitHubOrganization
    url: https://github.com/flatinpt
  - type: GitHubRepository
    url: https://github.com/flatinpt/mcp
  - type: Support
    url: mailto:info@flatin.pt
x-enrichment:
  date: '2026-09-16'
  status: enriched
  artifacts_added: 26
  pass: local-v3