> ## Documentation Index > Fetch the complete documentation index at: https://docs.murmo.xyz/llms.txt > Use this file to discover all available pages before exploring further. # Open a perp position (create proposal) > Open a NEW perp position, creating the proposal atomically. `collateralUsd` and `leverage` are numeric strings; `stopLossPct`/`takeProfitPct` are optional % collateral-ROI brackets. The wallet is resolved server-side. Subject to regional restrictions (see Eligibility & geo restrictions). ## OpenAPI ````yaml /openapi.json post /api/v1/perps/proposals openapi: 3.1.0 info: title: Murmo API version: 1.0.0 description: >- REST API for the Murmo trading platform. Spot swaps, prediction markets, perpetual futures, social copy-trading groups, portfolio, and chat — everything a bot or AI agent needs to trade on Solana with a single API key. **The money contract:** every monetary value on the wire is a full-precision plain decimal **string** (e.g. `"12.50"`), never a number, never raw base units, never scientific notation, never rounded. Send money the same way. See the *Money & precision* guide. **Auth:** send `Authorization: Bearer murmo_...` on every request. Keys are created in the Murmo app. contact: name: Murmo Support email: support@murmo.xyz servers: - url: https://api.alpha-labs.trade description: Production - url: http://localhost:3000 description: Local development security: - bearerAuth: [] tags: - name: Identity description: Who am I, which key is this, and what is my rate budget. - name: Account description: >- Wallet value, balances, holdings, PnL, and the deposit address for funding in. - name: Spot description: Token discovery and group spot proposals. - name: Stocks description: >- Ondo tokenized stocks: the supported-ticker catalog and ticker-based trading over the group/proposal flow. - name: Predictions description: >- Polymarket-backed prediction markets: browse events, propose, predict, sell, claim. - name: Perpetuals description: 'Phoenix RISE perps: markets, proposals, open/increase/reduce/close/claim.' - name: Groups description: 'Copy-trade groups: membership, admin, and auto-follow.' - name: Portfolio description: Cross-vertical open positions, past positions, and trade history. - name: Chat description: Group chat over REST (the stateless counterpart to the WebSocket gateway). paths: /api/v1/perps/proposals: post: tags: - Perpetuals summary: Open a perp position (create proposal) description: >- Open a NEW perp position, creating the proposal atomically. `collateralUsd` and `leverage` are numeric strings; `stopLossPct`/`takeProfitPct` are optional % collateral-ROI brackets. The wallet is resolved server-side. Subject to regional restrictions (see Eligibility & geo restrictions). operationId: openPerpProposal requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/OpenPerpProposalBody' examples: default: value: groupId: 1a9d212a-de67-45f4-88f5-6e9f41e78dc0 marketSymbol: BTC side: LONG collateralUsd: '25.00' leverage: '5' reason: Bullish takeProfitPct: '100' responses: '200': description: The opened position. content: application/json: schema: $ref: '#/components/schemas/PerpPositionResultEnvelope' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' components: schemas: OpenPerpProposalBody: type: object required: - groupId - marketSymbol - side - collateralUsd - leverage properties: groupId: type: string marketSymbol: type: string example: BTC side: type: string enum: - LONG - SHORT collateralUsd: $ref: '#/components/schemas/MoneyString' leverage: type: string description: Numeric string, e.g. "5". example: '5' reason: type: string stopLossPct: type: string description: Optional % collateral-ROI stop-loss. takeProfitPct: type: string description: Optional % collateral-ROI take-profit. PerpPositionResultEnvelope: type: object properties: data: $ref: '#/components/schemas/PerpPositionResult' MoneyString: type: string description: >- A monetary amount as a full-precision plain decimal string in USD — never a number, never raw base units, never scientific notation, never rounded. Parse with a decimal library; round only for display. example: '12.50' PerpPositionResult: type: object description: >- Result of an open/increase/reduce. Close-side fields are populated on a full close. properties: assignmentId: type: string proposalId: type: string subaccountIndex: type: integer txSignature: type: string marketSymbol: type: string side: type: string enum: - LONG - SHORT closePnlUsd: oneOf: - $ref: '#/components/schemas/MoneyString' - type: 'null' closePnlPct: oneOf: - $ref: '#/components/schemas/DecimalString' - type: 'null' closeProceedsUsd: oneOf: - $ref: '#/components/schemas/MoneyString' - type: 'null' closedBaseUnits: type: string nullable: true isFullClose: type: boolean nullable: true Error: type: object description: >- Errors come in two shapes. Coded business errors: `{ message, code }`. Generic framework errors: `{ statusCode, message, error }` (message may be an array of validation strings). properties: statusCode: type: integer example: 400 message: oneOf: - type: string - type: array items: type: string example: Query parameter "groupId" is required error: type: string example: Bad Request code: type: string description: >- Stable machine-readable code on business errors (e.g. NOT_GROUP_MEMBER, MARKET_NOT_ACTIVE, AMOUNT_BELOW_MINIMUM, MIN_ORDER_SIZE, NO_LIQUIDITY, FUNDING_REFUNDED). The full list is published as error-catalog.json. example: NOT_GROUP_MEMBER DecimalString: type: string description: >- A non-money decimal (percentage, ratio, price) as a full-precision plain decimal string (never scientific notation). example: '4.27' responses: BadRequest: description: Invalid input. content: application/json: schema: $ref: '#/components/schemas/Error' Unauthorized: description: Missing or invalid credential. content: application/json: schema: $ref: '#/components/schemas/Error' Forbidden: description: >- Authenticated but not permitted (e.g. not a group member, or the product is restricted in your region). content: application/json: schema: $ref: '#/components/schemas/Error' securitySchemes: bearerAuth: type: http scheme: bearer description: >- Send your API key as `Authorization: Bearer murmo_...`. Keys are created in the Murmo app. Header-only — keys are never read from the query string. Valid for the REST API under /api/v1 only (not the GraphQL endpoint). ````