[Home](./index.md) > [bitburner](./bitburner.md) > [Corporation](./bitburner.corporation.md) ## Corporation interface Corporation API Signature: ```typescript export interface Corporation extends WarehouseAPI, OfficeAPI ``` Extends: [WarehouseAPI](./bitburner.warehouseapi.md), [OfficeAPI](./bitburner.officeapi.md) ## Methods | Method | Description | | --- | --- | | [acceptInvestmentOffer()](./bitburner.corporation.acceptinvestmentoffer.md) | Accept investment based on you companies current valuation | | [bribe(factionName, amountCash)](./bitburner.corporation.bribe.md) | Bribe a faction | | [buyBackShares(amount)](./bitburner.corporation.buybackshares.md) | Buyback Shares | | [createCorporation(corporationName, selfFund)](./bitburner.corporation.createcorporation.md) | Create a Corporation | | [expandCity(divisionName, city)](./bitburner.corporation.expandcity.md) | Expand to a new city | | [expandIndustry(industryType, divisionName)](./bitburner.corporation.expandindustry.md) | Expand to a new industry | | [getBonusTime()](./bitburner.corporation.getbonustime.md) | Get bonus time. “Bonus time” is accumulated when the game is offline or if the game is inactive in the browser. “Bonus time” makes the game progress faster. | | [getConstants()](./bitburner.corporation.getconstants.md) | Get corporation related constants | | [getCorporation()](./bitburner.corporation.getcorporation.md) | Get corporation data | | [getDivision(divisionName)](./bitburner.corporation.getdivision.md) | Get division data | | [getIndustryData(industryName)](./bitburner.corporation.getindustrydata.md) | Get constant industry definition data for a specific industry | | [getInvestmentOffer()](./bitburner.corporation.getinvestmentoffer.md) | Get an offer for investment based on you companies current valuation | | [getMaterialData(materialName)](./bitburner.corporation.getmaterialdata.md) | Get constant data for a specific material | | [getUnlockUpgradeCost(upgradeName)](./bitburner.corporation.getunlockupgradecost.md) | Gets the cost to unlock a one time unlockable upgrade | | [getUpgradeLevel(upgradeName)](./bitburner.corporation.getupgradelevel.md) | Get the level of a levelable upgrade | | [getUpgradeLevelCost(upgradeName)](./bitburner.corporation.getupgradelevelcost.md) | Gets the cost to unlock the next level of a levelable upgrade | | [goPublic(numShares)](./bitburner.corporation.gopublic.md) | Go public | | [hasCorporation()](./bitburner.corporation.hascorporation.md) | Returns whether the player has a corporation. Does not require API access. | | [hasUnlockUpgrade(upgradeName)](./bitburner.corporation.hasunlockupgrade.md) | Check if you have a one time unlockable upgrade | | [issueDividends(rate)](./bitburner.corporation.issuedividends.md) | Issue dividends | | [issueNewShares(amount)](./bitburner.corporation.issuenewshares.md) | Issue new shares | | [levelUpgrade(upgradeName)](./bitburner.corporation.levelupgrade.md) | Level an upgrade. | | [sellShares(amount)](./bitburner.corporation.sellshares.md) | Sell Shares | | [unlockUpgrade(upgradeName)](./bitburner.corporation.unlockupgrade.md) | Unlock an upgrade |