> ## Documentation Index > Fetch the complete documentation index at: https://docs.validationcloud.io/llms.txt > Use this file to discover all available pages before exploring further. # Retrieve an Operation > The single operation endpoint provides information about a specific operation. The single operation endpoint provides information about a specific operation. This method will use `20` [Compute Units](/nodeapi/about/billing). *** ## Reference: [Here](https://developers.stellar.org/docs/data/apis/horizon/api-reference/retrieve-an-operation) ## OpenAPI ````yaml nodeapi/openapi/horizon-openapi-vc.json GET /operations/{id} openapi: 3.0.3 info: title: Horizon version: 0.0.1 servers: - url: https://mainnet.stellar.validationcloud.io/v1/ description: The Pubnet Network security: [] tags: - name: Accounts description: >- Users interact with the Stellar network through accounts. Everything else in the ledger—assets, offers, trustlines, etc. are owned by accounts, and accounts must authorize all changes to the ledger through signed transactions. - name: Assets description: >- Assets are representations of value issued on the Stellar network. An asset consists of a type, code, and issuer. - name: Claimable Balances description: >- A Claimable Balance represents the transfer of ownership of some amount of an asset. Claimable balances provide a mechanism for setting up a payment which can be claimed in the future. This allows you to make payments to accounts which are currently not able to accept them. - name: Effects description: >- Effects represent specific changes that occur in the ledger as a result of successful operations, but are not necessarily directly reflected in the ledger or history, as transactions and operations are. - name: Fee Stats description: >- Fee stats are used to predict what fee to set for a transaction before submitting it to the network. - name: Liquidity Pools description: >- Liquidity Pools provide a simple, non-interactive way to trade large amounts of capital and enable high volumes of trading. - name: Ledgers description: >- Each ledger stores the state of the network at a point in time and contains all the changes - transactions, operations, effects, etc. - to that state. - name: Offers description: >- Offers are statements about how much of an asset an account wants to buy or sell. - name: Order Books description: An order book is a collections of offers for a specific pair of assets. - name: Trade Aggregations description: >- A trade aggregation represents aggregated statistics on an asset pair (base and counter) for a specific time period. Trade aggregations are useful to developers of trading clients and provide historical trade data. - name: Trades description: >- When an offer is fully or partially fulfilled, a trade happens. Trades can also be caused by successful path payments, because path payments involve fulfilling offers. A trade occurs between two parties—base and counter. Which is which is either arbitrary or determined by the calling query. - name: Transactions description: >- Transactions are commands that modify the ledger state and consist of one or more operations. paths: /operations/{id}: get: tags: - Operations summary: Retrieve an Operation description: >- The single operation endpoint provides information about a specific operation. operationId: RetrieveAnOperation parameters: - $ref: '#/components/parameters/IdParam' - $ref: '#/components/parameters/JoinParam' responses: '200': description: Success content: application/json: schema: allOf: - $ref: '#/components/schemas/Links' - $ref: '#/components/schemas/Operation' examples: RetrieveAnOperation: $ref: '#/components/examples/RetrieveAnOperation' components: parameters: IdParam: name: id in: path required: true description: The ID number for this operation. schema: type: string example: 121692259040116740 JoinParam: name: join in: query required: false description: >- Set to transactions to include the transactions which created each of the operations in the response. schema: type: string schemas: Links: type: object properties: _links: type: object properties: self: $ref: '#/components/schemas/link' next: $ref: '#/components/schemas/link' prev: $ref: '#/components/schemas/link' Operation: type: object properties: _links: type: object properties: effects: $ref: '#/components/schemas/link' precedes: $ref: '#/components/schemas/link' self: $ref: '#/components/schemas/link' succeds: $ref: '#/components/schemas/link' transaction: $ref: '#/components/schemas/link' id: $ref: '#/components/schemas/id' paging_token: $ref: '#/components/schemas/paging_token' type_i: type: number example: 0 type: type: string example: create_account link: type: object properties: href: type: string format: link templated: type: boolean required: - href id: type: string paging_token: type: string examples: RetrieveAnOperation: value: _links: self: href: https://horizon-testnet.stellar.org/operations/121692259040116737 transaction: href: >- https://horizon-testnet.stellar.org/transactions/f92a9648c1084d1de0fd786faac5d5e1637d4127c60841d2366c70d2e7f77b85 effects: href: >- https://horizon-testnet.stellar.org/operations/121692259040116737/effects succeeds: href: >- https://horizon-testnet.stellar.org/effects?order=desc&cursor=121692259040116737 precedes: href: >- https://horizon-testnet.stellar.org/effects?order=asc&cursor=121692259040116737 id: '121692259040116737' paging_token: '121692259040116737' transaction_successful: true source_account: GBDVKE33GVVMBXX73OHIBRP6RAHKHHW2P4PQVV6UNOKQCOXU7GNUM4QI type: manage_offer type_i: 3 created_at: '2020-02-21T20:10:21Z' transaction_hash: f92a9648c1084d1de0fd786faac5d5e1637d4127c60841d2366c70d2e7f77b85 amount: '10000.0000000' price: '0.0704336' price_r: 'n': 44021 d: 625000 buying_asset_type: credit_alphanum4 buying_asset_code: USD buying_asset_issuer: GDUKMGUGDZQK6YHYA5Z6AY2G4XDSZPSZ3SW5UN3ARVMO6QSRDWP5YLEX selling_asset_type: native offer_id: 161536436 ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.