---
phase: 34-fix-mcp-apps-chatgpt-compatibility
plan: 02
subsystem: infra
tags: [axum, wildcard-routes, mcp-preview, web-server]

requires:
  - phase: none
    provides: n/a
provides:
  - "mcp-preview server starts without panic on wildcard routes"
  - "WASM and asset serving via axum 0.8 {*path} syntax"
affects: [mcp-apps-preview, chatgpt-compatibility]

tech-stack:
  added: []
  patterns: ["axum 0.8 wildcard route syntax {*path}"]

key-files:
  created: []
  modified:
    - crates/mcp-preview/src/server.rs
    - crates/mcp-preview/Cargo.toml

key-decisions:
  - "Patch version bump 0.1.1 -> 0.1.2 for mcp-preview"

patterns-established:
  - "Axum 0.8 wildcard routes use {*path} syntax, not *path"

requirements-completed: [CHATGPT-06]

duration: 1min
completed: 2026-03-06
---

# Phase 34 Plan 02: Fix Axum Wildcard Route Syntax Summary

**Fixed mcp-preview server panic by updating axum 0.8 wildcard route syntax from *path to {*path}**

## Performance

- **Duration:** 1 min
- **Started:** 2026-03-06T20:33:19Z
- **Completed:** 2026-03-06T20:34:36Z
- **Tasks:** 1
- **Files modified:** 2

## Accomplishments
- Fixed axum 0.8 wildcard route syntax for /wasm/ and /assets/ paths
- mcp-preview compiles and passes clippy with zero warnings
- Bumped mcp-preview version to 0.1.2

## Task Commits

Each task was committed atomically:

1. **Task 1: Fix axum 0.8 wildcard route syntax in mcp-preview** - `9b1477b` (fix)

## Files Created/Modified
- `crates/mcp-preview/src/server.rs` - Updated wildcard routes from *path to {*path}
- `crates/mcp-preview/Cargo.toml` - Version bump 0.1.1 -> 0.1.2

## Decisions Made
- Patch version bump (0.1.1 -> 0.1.2) since this is a bug fix

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
None

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- mcp-preview server can start without panic
- Ready for MCP Apps preview workflow testing

---
*Phase: 34-fix-mcp-apps-chatgpt-compatibility*
*Completed: 2026-03-06*
