SEBI Proposes API-Based STP Framework To Replace Centralized Hub

SEBI is suggesting significant changes to India's Straight Through Processing system by replacing the centralized STP Hub with a decentralized API-based communication mechanism among STP Service Providers. As the regulator, central STP Hub leads to delay, inefficiency, and concentration risk of operations, and also a single point of failure in institutional trade processing. By issuing its consultation paper on May 19 2026 SEBI intends to update the transaction messaging infrastructure of brokers, custodians, and institutional investors, and at the same time, achieve scalability and cost-efficiency of the securities market ecosystem.

Key Takeaways

• SEBI is suggesting significant changes to India's Straight Through Processing system by replacing the centralized STP Hub with a decentralized API-based communication mechanism among STP Service Providers.
• SEBI Plans To Replace Centralized STP Hub With API-Based Connectivity The Update SEBI is considering a move away from the current centralized STP Hub system to a decentralized API-based mode of communication among STP Service Providers in Indian capital markets.
• On the proposal line, a centralized STP Hub which acts as the intermediary for all participants will be removed altogether and there would be direct API-based communication between STP Service Providers.
• Optional API Communication For STP Users Besides inter-SSP communication reforms, SEBI has suggested API-based communication (optional) for STP users serviced by the same SSP.
• Conclusion By suggesting the replacement of the centralized STP Hub with a decentralized API-based setup, SEBI has charted a path to major technologically change India's capital market infrastructure.

SEBI Plans To Replace Centralized STP Hub With API-Based Connectivity

The Update

SEBI is considering a move away from the current centralized STP Hub system to a decentralized API-based mode of communication among STP Service Providers in Indian capital markets.

The Impact

The intent of this proposal is to reduce the delays, cut down on transmission expenses, enhance the ability of the operations to withstand failures, decrease the risk of concentration, and accommodate the increasing institutional trading volumes.

The Action

The regulator has asked the public to share their views on the proposed setup and draft guidelines till June 9, 2026.

Understanding The Existing STP Framework

Straight Through Processing, often abbreviated as STP, is a method that capital markets adopt to automate the entire process chain starting from the execution of a trade to the final settlement of that trade. STP enables brokers, custodians, institutional investors, and other such participants in the market to interact and share data related to transactions on an electronic platform with no need of the manual intervention time and again.

This structure finds its main area of use in the transmission of Electronic Contract Notes, settlement instruction confirmations, acknowledgements, and institutional trade processing. Currently, intra-communication between different STP Service Providers is facilitated through a centralized STP Hub.

Even though the system was set up with the aim to enhance efficiency in securities transactions, now SEBI has realized that the architecture has become outdated because of rising market volumes and changing technological requirements.

Why SEBI Wants To Change The Current System?

SEBI pointed out that the existing hub-based format of operation causes extra operational complexity and inefficacy in communication between market participants. As per the regulator, sending messages via a central intermediary not only increases the time of transmission but also leads to more costs as STP Hub charges are levied on inter-SSP communication.

The regulator further stated that institutional players largely rely on manual uploads and downloads of files through SSP interfaces, Because of this creating a high risk of human errors and operational dependency. Concentration risk was one of the major issues that SEBI identified. After analysing transactions made between April 2025 and December 2025, the regulator discovered that approximately 95%-99% of STP traffic was routed through one SSP. Such a high level of concentration raised concerns about operational resilience and market stability.

Problems Identified In The Centralized STP Hub

The consultation paper pointed out several shortcomings in the current system. SEBI mentioned that the centralized hub set up in the first place is the biggest reason of a single point of failure since the communication among the many SSPs is via only one common intermediary structure. The occurrence of any technical disruption or failure within the hub might even lead to one being unable to process institutional trading messages in the entire market, not just parts of it.

The regulator also argued that the traffic concentration in a single leading SSP might lead to a monopolization of the entity and result in a lack of incentive for the other parts to work together. SEBI critically pointed out that the current system might inadvertently encourage many the market players to engage solely with one SSP based on the cost and speed efficiency benefits. That means, the regulator felt that there was a need to look at a communication structure that is more decentralized and that can be scaled easily.

How The Proposed API-Based Framework Will Work?

On the proposal line, a centralized STP Hub which acts as the intermediary for all participants will be removed altogether and there would be direct API-based communication between STP Service Providers.

SSPs wouldn't have to send the messages through a central hub but would communicate with each other directly through standardized API endpoints using predefined protocols and messaging formats, for example, when a broker is sending an Electronic Contract Note through its SSP, the sender SSP would directly transmit the message via an API connection to the recipient SSP that is the institutional investor or the custodian. Then, the recipient SSP would acknowledge the receipt and finalize the communication cycle without the involvement of any central hub entity.

In this case, the proposed architecture by SEBI simplifies transaction processing by cutting down the number of communication layers and, as a result, increases the pace and efficiency of operations.

Benefits Expected From The New STP Model

The regulator is looking forward to the API-based structure greatly decreasing the latency and transmission costs that are usually present when processing institutional trades. SEBI is also of the view that the initiative will enhance operational resilience by removing the reliance on a single centralized intermediary. The decentralized layout should boost the capacity and handle higher institutional trading volumes without causing systemic bottlenecks.

In addition, SEBI pointed out that enhanced competition among SSPs is a key benefit. Since APIs standardize interoperability, it may become easier for smaller SSPs to compete without having to rely on centralized routing infrastructure.

Much, SEBI has stated that the proposed amendments will not necessitate system changes at the end of brokers custodians fund houses, or institutional investors. The change will mainly be on the communication architecture among SSPs.

Optional API Communication For STP Users

Besides inter-SSP communication reforms, SEBI has suggested API-based communication (optional) for STP users serviced by the same SSP.

Many participants generally upload and download files manually while exchanging Electronic Contract Notes and settlement instructions. SEBI feels that this current process leads to un-necessary operational dependencies and the risk of human errors is getting increased.

Under the new scheme, the optional API-based communication would enable the efficient and direct exchange of information between the traders who are connected to the same SSP. Also, the regulator believes that this would be a move towards higher efficiency and lesser manual work in the trade workflows of major financial institutions.

Impact On Brokers, Custodians, And Institutional Investors

Brokers, custodians and institutional investors should, as per the draft setup, get more efficient transaction processing without any major changes to their existing internal systems.

Speedy communication, decrease in transmission cost, availability of better automation facilities and less reliance on manual processes are some of the advantages institutional participants may get from the proposed structure. Also, the regulator believes that this system will be helpful in expanding institutional trading activity in different market segments in the future.

Its a bid on SEBI's part to upgrade the market infrastructure by using technology-based and scalable systems that would efficiently handle the ever-increasing volume of transactions.

Conclusion

By suggesting the replacement of the centralized STP Hub with a decentralized API-based setup, SEBI has charted a path to major technologically change India's capital market infrastructure.

The regulator aims to not only modernize institutional trade processing and increase interoperability among market participants, but also to reduce latency, operational costs, and concentration risks, as well as to enhance the system for resilience.

Even though the proposal is at the stage of seeking comments only, Plainly from the document that SEBI wants to adopt a faster, more scalable, and technology-driven securities market capable of supporting institutional trading that may grow in the future in a very efficient way.

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