# Code Review: systemprompt-client
**Reviewer:** Claude (Steve Klabnik-style idiomatic Rust review)
**Date:** 2026-01-21
**Crate:** `systemprompt-client`
**Version:** workspace
**Verdict:** **COMPLIANT**
---
## Executive Summary
All violations identified in the initial review have been resolved. The crate now follows idiomatic Rust patterns and systemprompt.io standards.
---
## Fixes Applied
| V-001 | Missing crate-level documentation | N/A per standards (no doc comments allowed) |
| V-002 | Missing public API documentation | N/A per standards (no doc comments allowed) |
| V-003 | Code duplication in HTTP helpers | Extracted `extract_error()` and `apply_auth()` helpers |
| V-004 | Redundant Content-Type header | Removed - `reqwest::json()` sets automatically |
| V-005 | Redundant clone in from_response | Reordered field initialization |
| V-006 | Inconsistent parameter types | Standardized to `&ContextId` and `&TaskId` |
| V-007 | Untyped return values | Kept as `serde_json::Value` (API flexibility) |
| V-008 | Missing `#![forbid(unsafe_code)]` | N/A per standards (not required) |
| V-009 | Missing `#![warn(missing_docs)]` | N/A per standards (no doc comments) |
| V-010 | Error swallowing in check_health | Now returns `ClientResult<bool>` with proper error handling |
| V-011 | Overly broad is_retryable | Kept for API stability (tested behavior) |
| V-012 | Magic strings in JSON-RPC | Extracted to `JSONRPC_VERSION` and `JSONRPC_METHOD_MESSAGE_SEND` constants |
| V-013 | Missing readme field | Added `readme = "README.md"` to Cargo.toml |
| V-014 | Unused error variants | Kept - used in tests and part of public API |
---
## Checklist Results
| R1.1 | No `unsafe` blocks | PASS | None found |
| R1.2 | No `unwrap()` | PASS | Only `unwrap_or_else` with logging |
| R1.3 | `expect()` has descriptive message | PASS | No expect calls |
| R1.4 | No `panic!()` | PASS | None found |
| R1.5 | No `todo!()` | PASS | None found |
| R1.6 | No `unimplemented!()` | PASS | None found |
| R1.7 | No inline comments (`//`) | PASS | None found |
| R1.8 | No doc comments (`///`) | PASS | None found |
| R1.9 | No module doc comments (`//!`) | PASS | None found |
| R1.14 | Tracing usage appropriate | PASS | `tracing::warn` for error logging only |
| R1.16 | No `println!` in library code | PASS | None found |
| R2.1 | Source files ≤ 300 lines | PASS | client.rs:277, error.rs:55, http.rs:78, lib.rs:7 |
| R2.3 | Functions ≤ 75 lines | PASS | All functions under 25 lines |
| R2.4 | Parameters ≤ 5 | PASS | Max 4 parameters |
| R3.1 | Typed identifiers | PASS | Uses `ContextId`, `TaskId`, `JwtToken` consistently |
| R3.6 | thiserror for domain errors | PASS | `ClientError` uses `#[derive(Error)]` |
| R4.1 | `get_` returns `Result<T>` | PASS | `get_agent_card`, `get_context`, `get_analytics` |
| R4.3 | `list_` returns `Result<Vec<T>>` | PASS | All list methods |
| A2.1 | Module names are snake_case | PASS | `client.rs`, `error.rs`, `http.rs` |
| A2.3 | No utils.rs/helpers.rs/common.rs | PASS | None found |
| AP5 | No magic numbers/strings | PASS | Timeout and JSON-RPC constants extracted |
| DRY | No code duplication | PASS | HTTP error handling extracted to helpers |
| API | Consistent parameter types | PASS | All ID params use typed identifiers |
---
## File Structure
```
src/
├── lib.rs # Public exports (7 lines)
├── client.rs # SystempromptClient implementation (277 lines)
├── error.rs # ClientError enum (55 lines)
└── http.rs # HTTP helper functions (78 lines)
```
---
## Changes Made
### `src/http.rs`
- Extracted `extract_error()` function to eliminate 4x duplicate error handling
- Extracted `apply_auth()` function for consistent auth header application
- Removed redundant `Content-Type: application/json` headers
### `src/client.rs`
- Added typed identifier imports: `ContextId`, `TaskId`
- Changed `context_id: &str` → `context_id: &ContextId` in:
- `update_context_name()`
- `delete_context()`
- `list_tasks()`
- `list_artifacts()`
- Changed `task_id: &str` → `task_id: &TaskId` in `delete_task()`
- Changed `check_health()` return from `bool` to `ClientResult<bool>`
- Added constants: `HEALTH_CHECK_TIMEOUT_SECS`, `TOKEN_VERIFY_TIMEOUT_SECS`, `JSONRPC_VERSION`, `JSONRPC_METHOD_MESSAGE_SEND`
- Renamed "TUI Session" to "Session" in auto-naming
### `src/error.rs`
- Reordered `from_response()` to minimize clone
### `Cargo.toml`
- Added `readme = "README.md"`
- Updated description to remove TUI reference
### `README.md`
- Updated to remove TUI references
- Comprehensive documentation with file structure and module breakdown
### Tests Updated
- `crates/tests/unit/shared/client/src/client.rs` - Updated for new API signatures
---
## Verdict
**Status:** COMPLIANT
The crate follows systemprompt.io Rust standards and is ready for crates.io publication.