Flat Files S3 Gateway API
What you get
Use cases
The quote at the top of the book includes the best bid and ask prices, along with the total volume of resting orders. This data is timestamped twice, first by the exchange (when available) and then at the exact moment it is received before any processing occurs. Additionally, each quote is marked with an identifier for the server that received this information. There is one file for each symbol per trading day, organized according to UTC.
A trade records a transaction between passive and active market participants. Each trade entry includes:
- ID
- price
- size
- the aggressor side of the trade (when available).
This information is timestamped twice: first by the exchange, if possible, and again at the exact moment it is received before any processing takes place. Data for each symbol is stored in a single file, organized by trading day according to UTC.
The limitbook_full file includes every update to the order book as delivered by the data source, with Level 2 or Level 3 granularity. It begins with a snapshot of the order book and is followed by subsequent updates to its state. Each data point in this format represents a level in the order book, allowing for a detailed view of the order book to the depth provided by the data source. This data is double timestamped: first by the exchange, if this is available, and then at the moment it is first received, before any processing. The information is organized into a single file for each trading symbol, covering each trading day according to UTC.
MCP compability for seamless data integration
FinFeedAPI supports the Model Context Protocol (MCP), an open specification that makes our financial data APIs machine-readable. This allows AI models, autonomous agents, and next-generation crypto apps to programmatically discover and integrate our data with little to no custom code.
Key benefits for users include:
- Easy AI Integration: Directly connect FinFeedAPI data to large language models (LLMs) and AI agents.
- Simplified Development: Access all FinFeedAPI services through a single, unified MCP endpoint, eliminating the need for custom wrappers.
- Increased Reliability: Schema-level validation catches errors and ensures more robust integrations.
- Future-Proof Design: New services and endpoints are automatically discovered by your applications without requiring client-side updates.
Built by the Team behind CoinAPI
We've served billions of crypto API requests. Now we're bringing that same reliability and simplicity to stock market and currency exchange data. One clean API. All the data you need. Nothing you don't.
Market Data in Clear and Easy-to-Use CSV Files
- $25.00 free credits
- Unlimited API keys
- Volume discounts
- Email and Slack support
- All Features of Lower Packages
- Custom Limits & Quotas
- Project Tailored SLAs
- Premium Support
- Latency SLA
- Bundle options with other FinFeedAPI and CoinAPI products
Transparent, scalable, usage-based pricing
API Requests
API requests are made to our servers to retrieve data of specific type. Each time you perform any action using our API, it counts as one API call.
Flat files are simple, lightweight data storage formats that organize information in a straightforward, non-hierarchical way. Unlike complex databases or deeply nested file structures (e.g., relational databases or nested JSON/XML), flat files keep data at a single level, making them easy to read, write, and process. Common examples include flat JSON, flat XML, and even plain text files like CSVs (comma-separated values). They’re widely used for configuration settings, small datasets, or data exchange between systems.
Yes, depending on your subscription, you can request customized data sets or specify particular time ranges to align with your project requirements.
Subscription plans may impose limitations on the volume of data you can download and the size of individual files. It's recommended to review your plan details or contact support for specific limitations.
We generally accept major credit cards for payments. Crypto and bank wire tranfers are possible as well. If you have some specific request regarding payment method, contact support for more information.
Usage is typically invoiced once per month for the previous month's activity. The invoice details the usage and deducts the usage credits, with the amount due being only for usage exceeding the credit balance.
For customers with existing subscriptions, we offer the option to align the usage credit billing period with their subscription billing cycle. This synchronization helps simplify accounting and provides a more comprehensive view of total service costs.
Yes, invoice payment is available on Enterprise. Please contact our support team to set this up.
While credit card is our preferred payment method, we accept also crypto payments and bank wire transfers. Contact support for details.
If a payment fails, we'll notify you and attempt to charge again. Your service won't be interrupted immediately, but please update your payment method promptly.
Usage credits can be obtained through several methods:
- Promotions and Free Trials: FinFeedAPI occasionally offers promotional credits or free trial periods to new or existing customers. Every qualified organization receives $25 USD in credits. To be considered qualified, the organization must not be a duplicate of an existing organization.
- Manual Purchase: Customers can buy credits directly through the Customer Portal using either cryptocurrency or fiat currency.
- Auto-Recharge Feature: This automated system adds service credits using the account's payment methods when the balance falls below a certain threshold, bringing it back to a specified level.
- Sales Order Form: Customers can request an order form from our sales team to acquire usage credits, which may include special pricing or terms.
Usage credits, once acquired, are non-refundable.
No, usage credits do not expire and you can use them for as long as you want.
You are entitled to a comprehensive support through detailed documentation, a dedicated support team, and responsive support tickets. You can reach out to the support team for assistance with any Flat Files-related inquiries.
- Standard Support: Includes basic support services, such as email support and access to documentation.
- Premium Support: Offers faster response times, dedicated support representatives, and additional support channels.
The enterprise plan is custom-tailored based on specific project needs, including:
- Custom limits
- Dedicated infrastructure
- Other requirements
Once you will reach us with a request for enterprise services we will prepare a custom quote based on your requirements.
Yes, you can upgrade or downgrade your subscription as your needs change. This flexibility allows you to switch between plans based on your data requirements. Upgrading and downgrading operations are prorated, the remaining amount on your subscription at the moment of the change will be credited towards future liabilities. Your billing period cycle is not affected by plan change.
Yes, depending on your subscription, you can request customized data sets or specify particular time ranges to align with your project requirements.
Need advice? Get in touch with our experts
Let's Chat!
Not sure if our solutions solve your problem? We'd be happy to check it.
Need help choosing? Our sales team is ready to help you select the right product and plan that best suits your business's needs.
Looking for a quote on an enterprise plan? Request an estimate today.
We’re ready to address all your questions and concerns. Submit a form and we will get back to you right away! Request an estimate today.
Great tool for any market sector
How we can help you
Is your industry not on the list?
