generated: '2026-07-18'
method: derived
source: openapi/ccp-games-esi-openapi-original.json
note: Entity-relationship graph derived from ESI path structure and id-reference fields
  (EVE Online player-data domain).
entities:
- name: character
  id_param: character_id
  domain: Character
  operations_sample:
  - GetCharactersCharacterId
  - GetCharactersCharacterIdAssets
  - GetCharactersCharacterIdWallet
  - GetCharactersCharacterIdSkills
- name: corporation
  id_param: corporation_id
  domain: Corporation
  operations_sample:
  - GetCorporationsCorporationId
  - GetCorporationsCorporationIdAssets
  - GetCorporationsCorporationIdWallets
- name: alliance
  id_param: alliance_id
  domain: Alliance
  operations_sample:
  - GetAlliancesAllianceId
  - GetAlliancesAllianceIdCorporations
- name: fleet
  id_param: fleet_id
  domain: Fleets
  operations_sample:
  - GetFleetsFleetId
  - GetFleetsFleetIdMembers
- name: contract
  id_param: contract_id
  domain: Contracts
  operations_sample:
  - GetCharactersCharacterIdContracts
  - GetContractsPublicBidsContractId
- name: market_order
  id_param: order_id
  domain: Market
  operations_sample:
  - GetCharactersCharacterIdOrders
  - GetCorporationsCorporationIdOrders
- name: type
  id_param: type_id
  domain: Universe
  operations_sample:
  - GetUniverseTypesTypeId
- name: system
  id_param: system_id
  domain: Universe
  operations_sample:
  - GetUniverseSystemsSystemId
- name: region
  id_param: region_id
  domain: Market/Universe
  operations_sample:
  - GetUniverseRegionsRegionId
- name: structure
  id_param: structure_id
  domain: Universe
  operations_sample:
  - GetUniverseStructuresStructureId
relationships:
- from: character
  type: belongs_to
  to: corporation
  via: corporation_id
- from: corporation
  type: belongs_to
  to: alliance
  via: alliance_id
- from: alliance
  type: has_many
  to: corporation
  via: alliance_id
- from: corporation
  type: has_many
  to: character
  via: corporation_id
- from: character
  type: has_many
  to: market_order
  via: character_id
- from: character
  type: has_many
  to: contract
  via: character_id
- from: fleet
  type: has_many
  to: character
  via: fleet member
- from: market_order
  type: belongs_to
  to: type
  via: type_id
- from: market_order
  type: belongs_to
  to: region
  via: region_id
- from: system
  type: belongs_to
  to: region
  via: region_id
- from: structure
  type: belongs_to
  to: system
  via: solar_system_id