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WalkthroughThe client and multisig SDK add Guardian-managed proposal execution. Proposals can include transaction requests and expiration bounds. The SDK checks local execution requirements and supports execution requests, status reads, and deadline-bounded polling. The demo adds mode selection and execution status actions. ChangesGuardian-Managed Proposal Execution
Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Operator
participant MultisigClient
participant GuardianClient
participant Guardian
Operator->>MultisigClient: Request Guardian execution
MultisigClient->>MultisigClient: Check known proposal and local-execution rule
MultisigClient->>GuardianClient: Submit execution request
GuardianClient->>Guardian: ExecuteDeltaProposal
Guardian-->>GuardianClient: Execution result
GuardianClient-->>MultisigClient: ProposalExecution
loop Poll until terminal state or deadline
MultisigClient->>GuardianClient: Read proposal execution
GuardianClient->>Guardian: GetDeltaProposalExecution
Guardian-->>GuardianClient: Latest execution state
GuardianClient-->>MultisigClient: ProposalExecution
end
MultisigClient-->>Operator: Terminal result or timeout
Suggested reviewers: Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage | Docstring coverage is 68.60% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 207 functions across 34 files. (5 skipped… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
✅ Passed checks (4 passed)
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Check name Status Explanation Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled. Title check ✅ Passed The title identifies the Rust SDK work, which is related to the changes. It is broad and includes review-stack metadata, but it still conveys the affected area. Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request. Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
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Explanation
Docstring coverage is 68.60% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 207 functions across 34 files. (5 skipped: 5 unsupported.)
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A rabbit checks the status light,
Then taps “execute” with delight.
The proposal hops through bounds,
While patient polling circles round.
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Copilot review overview
🟡 Changes recommended
Deadline enforcement and remote-execution completion flows need correction before approval.
Review effort: Balanced
Findings: 3
Open (3)
What changed in this PR
Adds Rust SDK support for Guardian-managed proposal execution as layer 5 of the review-only stack for #510. This layer is not intended to merge independently.
Changes:
- Adds execution requests, status queries, typed responses, and polling.
- Stores executable requests with signed expiration bounds and pinned input notes.
- Extends the demo, documentation, and regression coverage.
| File | Description |
|---|---|
| examples/demo/src/state.rs | Stores the session execution mode. |
| examples/demo/src/main.rs | Prompts for execution mode at startup. |
| examples/demo/src/actions/proposal_management.rs | Adds remote execution and status actions. |
| examples/demo/README.md | Documents remote execution setup. |
| docs/MULTISIG_SDK.md | Explains execution APIs and cross-SDK semantics. |
| crates/miden-multisig-client/src/transaction/payment.rs | Adds payment expiration support and parity tests. |
| crates/miden-multisig-client/src/transaction/mod.rs | Exposes execution-mode and expiration helpers. |
| crates/miden-multisig-client/src/transaction/guardian.rs | Applies expiration to guardian-switch scripts. |
| crates/miden-multisig-client/src/transaction/expiration.rs | Defines execution modes, bounds, and parity vectors. |
| crates/miden-multisig-client/src/transaction/consume.rs | Pins authenticated notes and applies expiration. |
| crates/miden-multisig-client/src/transaction/configuration/mod.rs | Exposes script builders for tests. |
| crates/miden-multisig-client/src/transaction/configuration/config.rs | Adds configuration-script expiration. |
| crates/miden-multisig-client/src/transaction/builder.rs | Attaches requests and bounds during proposal creation. |
| crates/miden-multisig-client/src/payload.rs | Adds the optional stored request. |
| crates/miden-multisig-client/src/lib.rs | Exports execution APIs and types. |
| crates/miden-multisig-client/src/execution.rs | Preserves expiration when rebuilding transactions. |
| crates/miden-multisig-client/src/error.rs | Adds refusal and polling-timeout errors. |
| crates/miden-multisig-client/src/client/switch_recovery_tests.rs | Adapts recovery tests to expiration arguments. |
| crates/miden-multisig-client/src/client/proposals.rs | Applies execution mode and retains custom requests. |
| crates/miden-multisig-client/src/client/offline.rs | Keeps offline creation self-executed. |
| crates/miden-multisig-client/src/client/mod.rs | Stores execution mode and exposes polling options. |
| crates/miden-multisig-client/src/client/helpers.rs | Rebuilds requests with signed expiration. |
| crates/miden-multisig-client/src/client/guardian_execution.rs | Implements execution requests, reads, and polling. |
| crates/miden-multisig-client/src/client/execution_mode_tests.rs | Tests request reproduction and cosigner workflows. |
| crates/miden-multisig-client/src/client/endpoint_scheme_tests.rs | Updates finalization test arguments. |
| crates/miden-multisig-client/src/client/anchor_binding_tests.rs | Updates binding tests for expiration support. |
| crates/miden-multisig-client/src/builder.rs | Configures client execution mode. |
| crates/miden-multisig-client/README.md | Documents execution and polling APIs. |
| crates/client/tests/no_miden_client.rs | Guards against execution-engine dependencies. |
| crates/client/src/testing/mod.rs | Registers execution tests. |
| crates/client/src/testing/mocks.rs | Adds execution response mocks. |
| crates/client/src/testing/execution_tests.rs | Tests execution responses and refusals. |
| crates/client/src/lib.rs | Exports execution response types. |
| crates/client/src/execution.rs | Validates and converts execution envelopes. |
| crates/client/src/client.rs | Adds three authenticated execution calls. |
| crates/client/README.md | Documents base-client execution calls. |
| crates/client/proto/guardian.proto | Mirrors execution RPCs and messages. |
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Actionable comments posted: 3
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @crates/miden-multisig-client/src/client/proposals.rs:
- Around line 128-134: In the proposal listing flow, record a proposal in
known_proposals only when verify_proposal_summary_binding succeeds; leave
failed-binding proposals out of the local known-proposals registry while
preserving the listing result.
Review comments at @docs/MULTISIG_SDK.md:
- Around line 566-575: Remove the TypeScript execution example using
MultisigClient from this documentation change, keep the Rust example here, and
add the TypeScript example with the TypeScript SDK change once executionMode and
the guardian execution methods are available.
Review comments at @examples/demo/README.md:
- Line 44: Update the fee-funding guidance around
GUARDIAN_EXECUTION_INSUFFICIENT_FEE to explain that a new account can bootstrap
by consuming a note containing the native fee asset, and instruct users to send
and consume that fee-asset note before creating regular proposals.
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📒 Files selected for processing (39)
crates/client/README.mdcrates/client/proto/guardian.protocrates/client/src/client.rscrates/client/src/execution.rscrates/client/src/lib.rscrates/client/src/testing/execution_tests.rscrates/client/src/testing/mocks.rscrates/client/src/testing/mod.rscrates/client/tests/no_miden_client.rscrates/miden-multisig-client/README.mdcrates/miden-multisig-client/src/builder.rscrates/miden-multisig-client/src/client/anchor_binding_tests.rscrates/miden-multisig-client/src/client/endpoint_scheme_tests.rscrates/miden-multisig-client/src/client/execution_mode_tests.rscrates/miden-multisig-client/src/client/guardian_execution.rscrates/miden-multisig-client/src/client/helpers.rscrates/miden-multisig-client/src/client/io.rscrates/miden-multisig-client/src/client/mod.rscrates/miden-multisig-client/src/client/offline.rscrates/miden-multisig-client/src/client/proposals.rscrates/miden-multisig-client/src/client/switch_recovery_tests.rscrates/miden-multisig-client/src/error.rscrates/miden-multisig-client/src/execution.rscrates/miden-multisig-client/src/lib.rscrates/miden-multisig-client/src/local_execution.rscrates/miden-multisig-client/src/payload.rscrates/miden-multisig-client/src/transaction/builder.rscrates/miden-multisig-client/src/transaction/configuration/config.rscrates/miden-multisig-client/src/transaction/configuration/mod.rscrates/miden-multisig-client/src/transaction/consume.rscrates/miden-multisig-client/src/transaction/expiration.rscrates/miden-multisig-client/src/transaction/guardian.rscrates/miden-multisig-client/src/transaction/mod.rscrates/miden-multisig-client/src/transaction/payment.rsdocs/MULTISIG_SDK.mdexamples/demo/README.mdexamples/demo/src/actions/proposal_management.rsexamples/demo/src/main.rsexamples/demo/src/state.rs
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# Conflicts: # crates/miden-multisig-client/src/client/proposals.rs
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Layer 5/7: Rust SDK
crates/client: the three execution calls over gRPC,ProposalExecutioncrates/miden-multisig-client:ProposalExecutionMode(SelfExecuted/GuardianExecutable), storing the serialized request with the proposal, transaction expiration,request_guardian_execution,execution_status,current_execution,wait_for_guardian_executionexamples/demo: choose who executes at startup, execute via GUARDIAN, status menudocs/MULTISIG_SDK.mdReview focus: SDK API shape and parity with the TS SDK (layer 6). Builds:
cargo check --workspace --all-targetspasses.Review only
This PR is one layer of a review stack for #510. Do not merge it. #510 is the branch that is tested, qualified on devnet and merged; the top of this stack has exactly the same tree as #510.
Stack: design (#370) → 1 storage → 2 executor → 3 lifecycle → 4 API and ops → 5 Rust SDK → 6 TS SDK → 7 qualification. Each PR's base is the layer below, so the diff shows only this layer.
Review feedback is fixed on #510 and the affected layers are rebuilt from it.
Summary by CodeRabbit
New Features
Documentation