TickAtlas

ChatGPT Forex API — Custom GPT Actions Ready

Drop our OpenAPI schema into a ChatGPT Custom GPT under Actions. Authenticate with the X-API-Key header. Your GPT can now answer market questions with live data.

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No credit card$2.50 PAYG credit on sign up
15+API endpoints
42Indicator series
M1–D17 timeframes
$2.50PAYG starting credit
Why TickAtlas

Why Use TickAtlas?

Pre-Calculated, Redis-Cached

Indicator values are computed server-side on every new candle. Your app queries the result — no TA library, no candle history needed.

7 Timeframes

M1, M5, M15, M30, H1, H4, D1 — the same endpoint serves scalpers and position traders alike.

Forex, Crypto, Commodities

EURUSD, GBPUSD, XAUUSD, BTCUSD, USDJPY — data available for every symbol in our data.

One Request. Instant Data.

REQUEST 
{
  "openapi": "3.1.0",
  "info": { "title": "TickAtlas", "version": "1.0.0" },
  "servers": [{ "url": "https://tickatlas.com" }],
  "paths": {
    "/v1/indicator": {
      "get": {
        "operationId": "getIndicator",
        "parameters": [
          { "name": "symbol", "in": "query", "required": true, "schema": { "type": "string" } },
          { "name": "indicator", "in": "query", "required": true, "schema": { "type": "string" } },
          { "name": "timeframe", "in": "query", "required": false, "schema": { "type": "string", "default": "H1" } }
        ]
      }
    }
  }
}

How Does a ChatGPT Custom Action Work?

ChatGPT Custom Actions let your GPT call external REST APIs during a conversation. You provide an OpenAPI schema that describes the TickAtlas endpoints, add your API key as an authentication header, and the GPT can then call those endpoints whenever a user asks a market question. It's a REST API integration — not a plugin. Our JSON responses are fully compatible with GPT-4o's tool-calling interface.

Set Up in 4 Steps

1

Sign Up & Get API Key

Create a TickAtlas account and get $2.50 in free credits. Copy your API key from the dashboard.

2

Create a Custom GPT

In ChatGPT, go to Explore → Create a GPT. Give your GPT a system prompt describing what it does — e.g., 'You are a Forex market analyst with access to live indicator data.'

3

Add a Custom Action

In the GPT editor, click 'Add Action'. Paste the TickAtlas OpenAPI schema (available in our docs). Under Authentication, select API Key and paste your TickAtlas key with header name X-API-Key.

4

Test & Publish

Ask your GPT 'What is the RSI on EURUSD H1?' — it will call the API and respond with live data. Test, refine the system prompt, and save your GPT.

OpenAPI Schema + Test Code

OpenAPI Schema Paste into Custom Action
Python Test before adding to GPT
GPT Response How the GPT processes the data

What Your Forex GPT Can Do

Answer Market Questions

"Is EURUSD overbought?" or "What's the MACD signal on Gold H4?" — your GPT fetches live data and answers in plain English with market context.

Multi-Symbol Scans

"Which major pairs have RSI below 30 right now?" — the GPT can query multiple symbols and timeframes sequentially, then summarise the results.

Trade Idea Generation

Fetch all 42 indicators via /v1/indicators, pass them to the GPT, and ask it to evaluate confluence, suggest entries, or explain current market structure.

Also works with

Claude Custom Tools Gemini Extensions LangChain Tools Python / requests Node.js fetch n8n HTTP Node Zapier Webhooks Google Sheets

Plug into any stack

  • ChatGPT Custom GPTs
  • Claude Tools
  • Python / pandas
  • Node.js
  • Discord bots
  • Slack webhooks
  • n8n
  • Zapier
  • Google Sheets
Pricing

Start on pay-as-you-go, upgrade when the traffic justifies it.

Every new account starts with $2.50 of pay-as-you-go credit and no card. Monthly plans add a flat monthly price, WebSocket streaming and support.

Pay as you go
$2.50 credit No card required to start
  • $2.50 of credit included
  • Every REST endpoint except raw ticks
  • No card required, no overage
  • 10 API keys
See plan details
Starter
$29 per month · 10,000 requests/day · 120/min
  • Every REST endpoint except raw ticks
  • WebSocket streaming, 5 symbols
  • Released calendar actuals
  • Email support
  • 3 API keys
See plan details
Popular
Pro
$79 per month · 100,000 requests/day · 600/min
  • Everything in Starter
  • Raw tick data (/v1/ticks)
  • Priority support
  • 10 API keys
  • WebSocket streaming, 20 symbols
See plan details
Docs and implementation

Every next step is one click away.

Landing pages convert; documentation closes the loop. These are the routes a developer usually needs next.

Documentation hub

Start from the developer portal and map the API families your product needs.

Open docs

Quickstart

Make the first authenticated request and validate the setup end to end.

Read quickstart

API reference

Request and response contracts for quote, indicator, summary and calendar.

Browse reference

Integrations

How the API drops into ChatGPT, Claude, Discord, n8n, Zapier and Sheets.

See integrations
Frequently asked questions

What developers ask first.

Straight answers on limits, coverage and how the endpoint behaves in production.

Is this a ChatGPT plugin?

No — this is a REST API integrated via ChatGPT Custom Actions (formerly called plugins). You add it to your Custom GPT via the 'Add Action' button in the GPT editor. It works with any GPT-4 or GPT-4o based Custom GPT.

Does ChatGPT have real-time internet access without this?

By default, ChatGPT does not have real-time market data access. Our Custom Action gives your GPT the ability to fetch live indicator values on demand during a conversation — filling that gap.

What authentication does the Custom Action use?

API Key authentication with the header name X-API-Key. In the Custom Action authentication settings, select 'API Key', enter your TickAtlas API key, and set the header name to X-API-Key.

Will this work with Claude or Gemini too?

Yes. The same REST API and API key work with Claude Custom Tools, Gemini Extensions, and any AI platform that supports HTTP tool calls. The OpenAPI schema and authentication method are identical.

Start building

Start Building in 5 Minutes

Sign up, grab your API key, make your first request.

Every new account starts with $2.50 of pay-as-you-go credit. No card required.

Get $2.50 free credit Read the Docs