Capital.com Trading API

Name: Capital.com Trading API
Brand: Capital.com Trading API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentFinanceBankingapiKey36 EndpointsREST

For Agents

Open and close trading positions, place working orders, and stream market data on Capital.com for CFDs and spread betting. Supports live and demo accounts via a session-based auth flow.

Install Jentic One Beta

Connect the Capital.com Trading API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Capital.com Trading API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Capital.com Trading API.

Open a market or limit position on a specific epic with size, direction, and stop-loss

Place a working order at a target level and amend or cancel it before execution

Retrieve historical price candles for an instrument across configurable resolutions

GET STARTED

Start building with Capital.com Trading API

Explore with Jentic

View OpenAPI Document

Jentic publishes the only available OpenAPI specification for Capital.com Trading API, keeping it validated and agent-ready. The Capital.com Trading API exposes the full retail trading surface for CFDs and spread betting: session creation, account state, opening and closing positions, placing working orders, retrieving market metadata and price history, polling client sentiment, and managing watchlists. It supports both live and demo trading servers and uses a three-token auth flow (API key plus session-derived CST and X-SECURITY-TOKEN). Trading bots, portfolio dashboards, and algorithmic strategies use it as their execution and market-data feed.

Use Cases

Patterns agents use Capital.com Trading API for, with concrete tasks.

★ Algorithmic CFD Execution

Quant strategies execute CFD trades programmatically via POST /api/v1/positions, supplying epic, direction, size, and stop/limit levels. The endpoint returns a dealReference that GET /api/v1/confirms/{dealReference} resolves to the final fill or rejection. The same flow handles demo and live accounts by switching the base URL.

POST /api/v1/positions with epic, direction=BUY, size, and stopLevel, then GET /api/v1/confirms/{dealReference} to confirm the fill.

Portfolio Snapshot Dashboard

A trader-facing dashboard pulls account state, open positions, and transaction history every minute to render P&L and margin utilisation. GET /api/v1/accounts, GET /api/v1/positions, and GET /api/v1/history/transactions provide the structured data, and the dashboard refreshes the session token before it expires using POST /api/v1/session.

Fetch GET /api/v1/accounts and GET /api/v1/positions every minute and render the combined balance and unrealised P&L.

Sentiment-Informed Strategy

Strategies that fade or follow retail sentiment poll GET /api/v1/clientSentiment/{epic} to read the long/short percentage on a given instrument. The signal feeds directly into a sizing rule before placing or scaling a position. Combined with price history from GET /api/v1/history/prices, this builds a self-contained signal pipeline against a single broker API.

GET /api/v1/clientSentiment/EURUSD and GET /api/v1/history/prices for the same epic, then size the next order based on the combined signal.

AI Agent Trading Assistant

An agent that tracks portfolio positions and executes user-approved trades uses Capital.com via Jentic. It searches for the open-position operation, loads the schema, and submits the trade once the user confirms. Session tokens stay encrypted in Jentic's vault and are refreshed automatically.

Search Jentic for 'open a Capital.com position', load the createPosition schema, and execute POST /api/v1/positions after the user confirms the size and direction.

Key Endpoints

36 endpoints — jentic publishes the only available openapi specification for capital.

METHOD

PATH

DESCRIPTION

POST

/api/v1/session

Create a trading session and get CST and X-SECURITY-TOKEN headers

POST

/api/v1/positions

Open a new position

POST

/api/v1/workingorders

Place a working order

GET

/api/v1/positions

List all open positions

GET

/api/v1/history/prices

Retrieve historical price candles

GET

/api/v1/clientSentiment/{epic}

Get client sentiment for an instrument

GET

/api/v1/confirms/{dealReference}

Confirm the status of a deal

POST

/api/v1/session

Create a trading session and get CST and X-SECURITY-TOKEN headers

POST

/api/v1/positions

Open a new position

POST

/api/v1/workingorders

Place a working order

GET

/api/v1/positions

List all open positions

GET

/api/v1/history/prices

Retrieve historical price candles

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

The X-CAP-API-KEY and the session-derived CST and X-SECURITY-TOKEN headers are stored encrypted in the Jentic vault. Jentic's MAXsystem refreshes the session tokens before they expire, so the agent never sees the raw key or session secrets.

Intent-based discovery

Agents search Jentic by intent (e.g., 'open a Capital.com position' or 'retrieve price history') and Jentic returns the matching operation with its input schema, so the agent picks the right one of the 36 endpoints without browsing the docs portal.

Time to first call

Direct Capital.com integration: 2-3 days for session bootstrap, three-header auth, working orders, and confirm polling. Through Jentic: under 2 hours — search, load schema, execute.

FAQs

Specific to using Capital.com Trading API through Jentic.

Why is there no official OpenAPI spec for Capital.com Trading API?

Capital.com publishes documentation but not an OpenAPI specification on its developer portal. Jentic generates and maintains this spec so that AI agents and developers can call Capital.com Trading API via structured tooling. It is validated against the live API and kept up to date. Get started at https://app.jentic.com/sign-up.

What authentication does the Capital.com Trading API use?

It uses a three-header flow. POST /api/v1/session with the X-CAP-API-KEY header returns CST and X-SECURITY-TOKEN response headers; both must be sent on subsequent calls. Through Jentic the API key and session tokens are stored encrypted in the vault and rotated automatically.

Can I open a CFD position on a specific instrument with the Capital.com API?

Yes. POST /api/v1/positions with epic, direction, size, and optional stopLevel and limitLevel returns a dealReference. Resolve the final state by calling GET /api/v1/confirms/{dealReference}.

How do I retrieve historical price candles through Jentic?

Search Jentic for 'Capital.com price history', load the getPriceHistory operation, and execute GET /api/v1/history/prices with the epic, resolution, and date range. The response returns OHLC candles for the requested window.

What are the rate limits for the Capital.com Trading API?

Capital.com applies per-account rate limits that are not enumerated in the OpenAPI spec — its public docs cite 10 requests per second for general endpoints and tighter limits on session creation. Implement client-side backoff on 429 responses.

Can I use a demo account before going live?

Yes. The spec lists both servers: live (https://api-capital.backend-capital.com) and demo (https://demo-api-capital.backend-capital.com). Switch the base URL when instantiating the client to test against the demo environment first.

Capital.com Trading API

Connect the Capital.com Trading API to your agent

Capabilities

Start building with Capital.com Trading API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs