# Grant Application: Rust SDK for CoW Protocol **URL:** \ **Category:** CoW Grants Program\ **Tags:** cancelled\ **Created:** [October 22, 2025, 11:31pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224 "2025-10-22T23:31:22Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [October 22, 2025, 11:31pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/1 "2025-10-22T23:31:22Z")
**Grant Title:** Rust SDK for CoW Protocol **Author:** pstylez78 **GitHub:** PatStiles (PatStiles) **About You:** Experienced Developer in Defi, and Web3 Contributor to the Jolt ZKVM (A16z), and Arkworks-rs. **Grant Category:** Protocol Order Flow / Developer tools **Grant Description:** Problem:\* Builders / developers come from many different technical backgrounds. Due to the nature of web applications predominantly being written in JavaScript, CoW Protocol naturally developed a JavaScript SDK [cow-sdk](https://github.com/cowprotocol/cow-sdk). After interest from the CoW Dao community a later grant was given to build a python SDK [cow-py](https://github.com/cowdao-grants/cow-py). Rust has become a popular backend language for many developers in crypto with various L1 ecosystems committing to its usage. Creating a Rust SDK for developers to interact with CoW protocol will aid developers using Rust as there main development language that seek to integrate CoW protocol. Solution: This grant seeks to set aside funding within Grants DAO to fund contributors to a CoW Protocol Rust SDK. Grant Goals and impact: Increase CoW protocol utility by extending the current cow protocol tooling to the widely used rust programming language. Increase CoWmunity engagement, fostering a strong developer community. Milestones: Phase one (feature parity): The first phase will involve developing the CoW Rust SDK to that allows for the following: - Querying the CoW Protocol subgraph. - Managing orders on the CoW Protocol. - Interacting with CoW Protocol smart contracts. - Encoding orders metadata and pinning to CID. - Fetching and decoding blockchain data. - Generated SDK documentation using OpenAPI Codegen. Specifically the Cow Rust SDK will achieve feature parity with: - `a. @cowprotocol/cow-sdk` - `b. @cowprotocol/contracts (hashing utilities)` - `c. @cowprotocol/app-data` To ensure soundness, correctness, and support ease of use, the Cow Rust SDK will include unit tests, integration tests and examples as outlined within the CoW Python SDK ( [cow-py/tests at main · cowdao-grants/cow-py · GitHub](https://github.com/cowdao-grants/cow-py/tree/main/tests) ). The project will be hosted within the [@cowdao-grants](https://github.com/cowdao-grants) organization on github within a repository titled `cow-rs` Phase two (maintenance): This phase will consist of being on call and active post development to proactively triage and address bugs and feature request reported by the community. Contributors will maintain the CoW Protocol Rust SDK over the course of a year. **Grant Timeline:** Phase one: 8 weeks Phase two: From 1 year after Phase 1 complete. **Funding Request:** $8,500 for the first phase. Based on the Grants Committee assessment (and whose decision is final), the funding will be divided amongst the developers of the Rust SDK with funds set aside for later review and auditing. Once the Rust SDK reaches feature parity, the orders routed by the Rust SDK will become eligible for the Volume Grants Program. Funds from the Volume Grants Program (if any), will be distributed to original developers, and maintainers, on a ratio basis to be solely determined by the Grants Committee. **Budget Breakdown:** $8.5k: development / labor cost. Volume Grants Program Gnosis Chain Address (to receive the grant): **Referral: N/A** **Terms and conditions:** By applying for this grant, I agree to be bound by the CowDAO Participation Agreement and the COWDAO Grant Terms and Conditions ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [October 23, 2025, 8:16am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/2 "2025-10-23T08:16:47Z")
Hi, this looks interesting! Would it be possible for this to be implemented in a manner whereby the SDK can be `no_std`compatible? ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [October 24, 2025, 4:35am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/3 "2025-10-24T04:35:47Z")
I do not think we could target full `no_std` compliance as for making network calls my plan was to utilize `reqwest` and `tokio` and they require `std`. `alloy-rs` as an example does not fully support `no_std` but instead adopts the strategy of separating `no_std` dependencies into separate crates such that you can compile parts with `no_std`. For the CoW Rust SDK I believe this would be a good approach. Additionally, the CoW Rust SDK could support `wasm` compilation and generate js bindings for use in web apps. This is supported in Helios, ( [helios/Cargo.toml at master · a16z/helios · GitHub](https://github.com/a16z/helios/blob/master/Cargo.toml#L111) ) as an example. ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [October 24, 2025, 10:39am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/4 "2025-10-24T10:39:13Z")
Sure, sounds good. Could we please make it `wasm` compatible at least? ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [October 25, 2025, 1:07am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/5 "2025-10-25T01:07:16Z")
Yes! I can include `wasm` compatibility as a feature in the sdk. ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [October 26, 2025, 6:26am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/6 "2025-10-26T06:26:38Z")
@mfw78 Should I update the grant and create a new forum post with updated milestones since the original post to this forum is now unable to be updated? ---
**Author:** ![Sov](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/sov/32/1295_2.png) [@Sov](https://forum.cow.fi/u/Sov)\ **Post date:** [October 30, 2025, 9:28pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/7 "2025-10-30T21:28:48Z")
Sure this is fine if you want to post in the same thread again - thanks for checking! ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [November 3, 2025, 3:59pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/8 "2025-11-03T15:59:42Z")
Per @Sov’s mention above, please feel free to update / post the revised post here, detailing inclusion of a `WASM` target. ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [November 7, 2025, 12:27am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/9 "2025-11-07T00:27:40Z")
**Grant Title:** Rust SDK for CoW Protocol **Author:** pstylez78 **GitHub:** PatStiles (PatStiles) **About You:** Experienced Developer in Defi, and Web3 Contributor to A16z Jolt ZKVM, and Arkworks-rs. **Grant Category:** Protocol Order Flow / Developer tools **Grant Description:** Problem:\* Builders / developers come from many different technical backgrounds. Due to the nature of web applications predominantly being written in JavaScript, CoW Protocol naturally developed a JavaScript SDK [cow-sdk](https://github.com/cowprotocol/cow-sdk). After interest from the CoW Dao community a later grant was given to build a python SDK [cow-py](https://github.com/cowdao-grants/cow-py). Rust has become a popular backend language for many developers in crypto with various L1 ecosystems committing to its usage. Solution: This grant seeks to set aside funding within Grants DAO to fund contributors to a CoW Protocol Rust SDK. Grant Goals and impact: Increase CoW protocol utility by extending the current cow protocol tooling to the widely used rust programming language. Increase CoWmunity engagement, fostering a strong developer community. Milestones: Phase one (feature parity): The first phase will involve developing a CoW Rust SDK that allows for the following: - Querying the CoW Protocol subgraph. - Managing orders on the CoW Protocol. - Interacting with CoW Protocol smart contracts. - Encoding orders metadata and pinning to CID. - Fetching and decoding blockchain data. - Generating SDK documentation using OpenAPI Codegen. - Compiling the SDK to `wasm` for use in web app development. Specifically the Cow Rust SDK will achieve feature parity with: - `a. @cowprotocol/cow-sdk` - `b. @cowprotocol/contracts (hashing utilities)` - `c. @cowprotocol/app-data` To ensure soundness, correctness, and support ease of use, the Cow Rust SDK will include unit tests, integration tests and examples as outlined within the CoW Python SDK ([cow-py/tests at main · cowdao-grants/cow-py · GitHub](https://github.com/cowdao-grants/cow-py/tree/main/tests)). The project will be hosted within the [@cowdao-grants](https://github.com/cowdao-grants) organization on github within a repository titled `cow-rs` Phase two (maintenance): This phase will consist of being on call and active post development to proactively triage and address bugs and feature request reported by the community. Contributors will maintain the CoW Protocol Rust SDK over the course of a year. **Grant Timeline:** Phase one: 8 weeks Phase two: From 1 year after Phase 1 complete. **Funding Request:** $8,500 for the first phase. Based on the Grants Committee assessment (and whose decision is final), the funding will be divided amongst the developers of the rust SDK with funds set aside for later review and auditing. Once the Rust SDK reaches feature parity, the orders routed by the Rust SDK will become eligible for the Volume Grants Program. Funds from the Volume Grants Program (if any), will be distrbuted to original developers, and maintainers, on a ratio basis to be solely determined by the Grants Committee. **Budget Breakdown:** $8.5k: development / labor cost. Volume Grants Program Gnosis Chain Address: 0x08681acf4721a18c49145fd66708e340e56da312: **Referral: N/A** **Terms and conditions:** By applying for this grant, I agree to be bound by the CowDAO Participation Agreement and the COWDAO Grant Terms and Conditions ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [November 7, 2025, 12:28am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/10 "2025-11-07T00:28:43Z")
@mfw78 @Sov Thank you for the feedback. I have posted the updated grant above! ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [November 7, 2025, 8:46am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/11 "2025-11-07T08:46:41Z")
Signalling my support for this grant. ---
**Author:** ![Sov](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/sov/32/1295_2.png) [@Sov](https://forum.cow.fi/u/Sov)\ **Post date:** [November 7, 2025, 2:25pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/12 "2025-11-07T14:25:01Z")
Thanks @pstylez78 the grants council is ready for you to submit this to Snapshot. You can follow the instructions here to do so. > **[Documentation - CoW DAO](https://docs.cow.fi/governance/grants/how-to-apply)** > > Documentation for CoW Protocol, CoW AMM, MEV blocker and other CoW DAO products. ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [November 8, 2025, 3:33am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/13 "2025-11-08T03:33:48Z")
> [@Sov](#): > > [How to Apply for a Grant | CoW Protocol Documentation](https://docs.cow.fi/governance/grants/how-to-apply) @mfw78 @Sov Thank you! Here is the Snapshot: [https://snapshot.box/#/s:cowgrants.eth/proposal/0xc1fba0f5565658fce7392f8995a43149b5599472531fa8abbdc3bdaf7ad2ed5f](https://snapshot.box/#/s:cowgrants.eth/proposal/0xc1fba0f5565658fce7392f8995a43149b5599472531fa8abbdc3bdaf7ad2ed5f) ---
**Author:** ![Sov](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/sov/32/1295_2.png) [@Sov](https://forum.cow.fi/u/Sov)\ **Post date:** [November 11, 2025, 4:16pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/14 "2025-11-11T16:16:25Z")
Congratulations! Your grant proposal has been approved by the CoW Grants Council via Snapshot. **Grant** : Rust SDK for CoW Protocol **Amount** : 8,500 xDAI (Phase 1) **Approved** : [Snapshot](https://snapshot.box/#/s:cowgrants.eth/proposal/0xc1fba0f5565658fce7392f8995a43149b5599472531fa8abbdc3bdaf7ad2ed5f) on November 10, 2025 ## Your Grant Team @Sov - Process, payments, and approvals @mfw78 - Technical review and quality standards This is a hybrid grant: Phase 1 (milestone-based, 8 weeks) develops the Rust SDK to feature parity with JS/Python SDKs. Phase 2 (one-year maintenance) will be discussed upon completion of Phase 1 as part of the Volume Grants Program. Your [approved proposal](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224) governs all details. * * * ## Milestone & Delivery | Milestone | Deliverable | Due Date | Payment | | --- | --- | --- | --- | | Phase 1 | Complete Rust SDK with feature parity to JS/Python SDKs (core functionality, contract interaction, app data handling, tests, docs, published to [crates.io](http://crates.io)) | January 6, 2026 | 8,500 xDAI | **Success metric** : Rust SDK achieves feature parity with existing SDKs and enables developers to interact with CoW Protocol using Rust. When you complete the milestone, post in this thread with links to deliverables (GitHub, docs) and tag @Sov and @mfw78. Your Reviewer responds within 7-14 days. Approved milestones enter the next end-of-month payout cycle, with funds arriving by the 15th of the following month. Post progress updates every 2-4 weeks. Flag blockers early. Small changes can be approved directly by your team. Major changes need a Snapshot vote. * * * ## Your Responsibilities Execute your proposal as approved and deliver on time to the quality standards you committed to. Post proactive progress updates in this thread - don’t wait for us to ask. When you hit issues, flag them early. When you complete milestones, post deliverable links and tag your team. If timelines shift, discuss in this thread. Deliverables must be open source. You’re an independent contractor handling your own taxes. Review full [grant terms here](https://forum.cow.fi/t/grants-dao-grant-agreement-terms-from-february-2025/2752) and [here](https://gateway.pinata.cloud/ipfs/Qmf9MYhcG2pFrDoVy13p6FWeVF4nG9HbJvRfYYbhazTCFe). * * * Please reply confirming that you’ve read this onboarding, provide your Gnosis Chain payment address (must match your Snapshot signing account), confirm that you understand your responsibilities, and acknowledge that you can reach your Steward and Reviewer via the contacts above. Once confirmed, you’re clear to start building. Questions? Tag @Sov for process/payments or @mfw78 for technical issues. 🐮 ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [November 24, 2025, 11:34am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/15 "2025-11-24T11:34:34Z")
@pstylez78 Can you please confirm receipt of and understanding of the above message detailing handling of your grant? 🙏 ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [November 24, 2025, 8:43pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/16 "2025-11-24T20:43:52Z")
Apologies! Yes I acknowledge the above message and confirm the details of handling the grant! ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [January 12, 2026, 11:15am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/17 "2026-01-12T11:15:22Z")
@pstylez78 Can you please provide an update as to your progress on this grant? Please kindly include public repository, and/or alternatively reach out on Discord so that we may facilitate movement of there repository to the [cowdao-grants · GitHub](https://github.com/cowdao-grants) organisation (with appropriate maintainer permissions) so that work can be migrated there. ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [February 9, 2026, 12:36pm UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/18 "2026-02-09T12:36:23Z")
@pstylez78 Hi, please advise the status of this grant, otherwise we may have to commence action to start to cancel this approval in lines with the CoW DAO Grant’s Terms and Conditions. ---
**Author:** ![pstylez78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/pstylez78/32/1510_2.png) [@pstylez78](https://forum.cow.fi/u/pstylez78)\ **Post date:** [February 18, 2026, 7:57am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/19 "2026-02-18T07:57:15Z")
Hi below is an update and new timeline for the grant. I due to personal circumstances the progress of the project has been delayed. I spoke off-forum as the situation was personal in nature @mfw78. ### Revised CoW Rust SDK (cow-rs) Development Schedule * * * ## Phase 1: Core and Orderbook **Submodules:** `cow-sdk-core`, `cow-sdk-orderbook` **Deadline:** Wednesday, February 25, 2026 - **Project Initialization:** Set up Cargo workspace and base dependencies (tokio, serde, alloy/ethers). - **Core Primitives:** Implementation of shared types including Address, TokenAddress, ChainId, and Domain Separators. - **Hashing Utilities:** Port EIP-712 signing logic for OrderComponents and Trade types. - **Orderbook API:** \* Map data models for Orders, Trades, and Auctions. - **Testing:** Implement unit tests for signature verification and API response parsing. * * * ## Phase 2: Subgraph and Trading **Submodules:** `cow-sdk-subgraph`, `cow-sdk-trading` **Deadline:** Wednesday, March 4, 2026 - **Subgraph Client:** \* Define GraphQL schemas for protocol history, solver performance, and user trades. - **Trading Module:** \* Develop high-level abstractions for “Quote-to-Order” workflows. * * * ## Phase 3: Composable CoW and Cow-Shed **Submodules:** `cow-sdk-composable`, `cow-sdk-cow-shed` **Deadline:** Wednesday, March 18, 2026 - **Composable CoW:** \* Port IConditionalOrder interaction logic. - **Cow-Shed:** \* Integrate experimental protocol features and research-tier settlement logic. * * * ## Phase 4: Flash Loans and App-Data **Submodules:** `cow-sdk-flash-loans`, `cow-sdk-app-data` **Deadline:** Wednesday, March 25, 2026 - **Flash Loans:** \* Implement interfaces for interacting with protocol-level liquidity and buffer-based flash loans. - **App-Data & Metadata:** \* Port JSON schema validation for order metadata. * * * ## Phase 5: Finalization and Documentation **Focus:** Soundness, Parity, and DX **Deadline:** Wednesday, April 1, 2026 - **Integration Testing:** Complete parity testing against the cow-py and cow-sdk (TS) test suites. - **OpenAPI Codegen:** Finalize auto-generated SDK components for remaining API endpoints. - **Developer Experience:** \* Finalize rustdoc documentation for all crates. - **Handover:** Final repository cleanup and release of version 0.1.0 to the cowdao-grants organization. ---
**Author:** ![mfw78](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.cow.fi/mfw78/32/1598_2.png) [@mfw78](https://forum.cow.fi/u/mfw78)\ **Post date:** [February 26, 2026, 10:59am UTC](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224/20 "2026-02-26T10:59:41Z")
Hi @pstylez78, Thank you for the revised timeline however today being February 26th, we are yet to see any repository associated with this. It is of my opinion that we should move this to a more collaborate, community driven development, such as that which was used for `cow-py` and then have members of the community collectively push to it (based on the `cowdao-grants` repository). I am more in favour of making this collaborative as opposed to an exclusive arrangement. mfw [Next page](https://forum.cow.fi/t/grant-application-rust-sdk-for-cow-protocol/3224.md?page=2)