From 97b34627667fd699f4e0e054533eb89a205a2878 Mon Sep 17 00:00:00 2001 From: tanaka takashi Date: Sun, 13 Sep 2026 14:12:41 +0900 Subject: feat: return composed WAV as MCP audio content Replace the server-local wav_path result with a protocol-native multimedia response. - Split internal composition execution from MCP ToolResult serialization so filesystem paths never enter public payloads. - Return every successfully composed WAV as AudioContent with the audio/wav MIME type, regardless of file size. - Keep structured audio metadata, duration, note sequence, and validation details alongside the multimedia content. - Use CallToolResult.isError as the authoritative MCP execution status while retaining compose success and validate valid as domain fields. - Treat invalid compose/API requests and runtime failures as tool errors, while invalid MML discovered by validate remains a successful validation operation. - Sanitize synthesis, file-write, audio-serialization, and unexpected failure responses so internal paths and exception details are not exposed. - Add protocol-level coverage for base64 round trips, content block types, error semantics, ResourceLink absence, and path non-disclosure. - Update existing tests for the separated execution layer and path-free result contract. - Document AudioContent and isError behavior in the README, MCP schema, and design specification. - Require the tested FastMCP 3.4.4 API line and exclude the incompatible 4.x major version. Verification: 487 tests passed; ruff check passed; git diff --check passed; uv lock --check passed; and a manual MCP call returned TextContent plus AudioContent with no wav_path. --- pyproject.toml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'pyproject.toml') diff --git a/pyproject.toml b/pyproject.toml index e7032ee..328f6bc 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -5,7 +5,7 @@ description = "MCP server for LLM-driven retro chiptune-style MML composition" readme = "README.md" requires-python = ">=3.14" dependencies = [ - "fastmcp>=2.1.0", + "fastmcp>=3.4.4,<4", "numpy>=2.0.0", ] -- cgit v1.2.3