overlay: 1.0.0
info:
  title: API Evangelist enhancements for LEO1 Fees API
  version: 1.0.0
extends: openapi/leo1-leofees-openapi-original.json
x-generated: '2026-07-19'
x-method: generated
actions:
- target: $.info
  description: Name the service, record provenance and flag the placeholder version.
  update:
    title: LEO1 Fees API
    x-service-name: leofees_backend
    description: 'Production REST API behind the LEO1 Fees SDK: student records, fee dues and structures,
      fee collections, transactions, payments and settlements, refunds, penalties and waivers, NACH/eNACH
      mandates, documents, communication and institute administration.'
    x-apievangelist-source: https://api.leo1.in/openapi.json
    x-apievangelist-harvested: '2026-07-19'
    x-apievangelist-note: info.version is the literal placeholder string "version" in the published spec;
      no released version identifier is available.
    contact:
      name: LEO1
      url: https://docs.leo1.in/
- target: $
  description: The published spec declares no servers[] at the document root; the SDK docs publish both
    environments.
  update:
    servers:
    - url: https://api.leo1.in
      description: Prod ENV
    - url: https://uatapi.leo1.in
      description: TEST ENV
- target: $.components.securitySchemes.APIKeyHeader
  description: Document the institute Secret Key semantics behind the secret-key header.
  update:
    description: Institute Secret Key, issued by LEO1 during onboarding. Paired with an Access Key that
      is passed to the browser SDK. See https://docs.leo1.in/intro
- target: $.paths['/api/v1/sdk/start_transaction'].post
  description: Cross-reference the SHA-512 request-signing contract that governs the hash field.
  update:
    externalDocs:
      description: Server integration and hash sequence
      url: https://docs.leo1.in/integrations/server-integration
    x-apievangelist-signing:
      algorithm: SHA-512
      field: hash
      hash_sequence: key|total_fees|fees_paid|student_name|roll_number|branch_name|course_name|parent_name|institute_name|phone_number|erp_transaction_id
      note: Trim all values before hashing; append the institute Secret Key to the hash string.