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7 changes: 3 additions & 4 deletions .cursor/mcp.json
Original file line number Diff line number Diff line change
Expand Up @@ -15,12 +15,11 @@
"disabled": false,
"autoApprove": []
},
"apidog": {
"API specification": {
"command": "npx",
"args": ["-y", "apidog-mcp-server@latest", "--project-id=${env:APIDOG_PROJECT_ID}"],
"args": ["-y", "apidog-mcp-server@latest", "--project=1134437"],
"env": {
"APIDOG_PROJECT_ID": "${env:APIDOG_PROJECT_ID}",
"APIDOG_ACCESS_TOKEN": "${env:APIDOG_ACCESS_TOKEN}"
"APIDOG_ACCESS_TOKEN": "${APIDOG_ACCESS_TOKEN}"
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⚠️ Potential issue | 🟡 Minor

🧩 Analysis chain

🏁 Script executed:

# Search for the review guidelines document
find . -name "review.md" -path "*/development/coding-rules/*" 2>/dev/null

Repository: zucky2021/ai-chatbot-api

Length of output: 109


🌐 Web query:

MCP model context protocol environment variable syntax ${env:} vs ${}

💡 Result:

Short answer

  • Both ${env:VAR} and ${VAR} are used by MCP-related tooling to insert environment-variable values into MCP config fields; ${env:VAR} is the explicit form and ${VAR} is a shorter/shorthand form that some clients accept. Use ${env:VAR} when you want to be explicit and portable; check the MCP client’s docs because support and fallback semantics vary. [1][2][3]

Details and practical notes

  • Explicit form: ${env:VARIABLE} — clearly names the source as an environment variable; shown in several MCP/Claude-style config docs and examples. Use this for clarity and when a tool’s syntax list documents it. [3]
  • Shorthand: ${VARIABLE} or $VARIABLE — many MCP implementations accept the shorter form (often shown for uppercase env names) and support default-value syntax like ${VAR:-default}. Not every client supports both forms. [2][3]
  • Other interpolation syntaxes exist in MCP ecosystems (examples: ${file:...}, ${exec:...}, ${secret:...}) — these are different expansion mechanisms, not the same as env interpolation. [4][5]
  • Important: Some MCP clients/config formats do NOT perform any ${...} expansion at all (they require literal strings or rely on the process environment being set separately). Always consult the specific MCP client’s docs (or test). Example: a docs page that notes .mcp.json does not expand ${VAR}. [0][1]

Quick recommendations

  • Prefer ${env:NAME} for readability/portability.
  • If you rely on default-value plumbing (e.g., ${VAR:-fallback}) confirm the client supports bash-style defaults.
  • If unsure, test locally: run the MCP client with a config that references ${env:...} and verify the server receives the intended value (or set envs in the client’s explicit env block/CLI options). [2][3][0]

Sources
[0] Voice Mode MCP config — ".mcp.json files: environment-variable substitution is NOT supported" (example showing expansion does not work).
[1] OpenAI / Codex MCP docs — MCP config fields and env handling (shows env/env_vars and usage).
[2] Jetify / Testpilot MCP docs — examples using ${VAR}, ${VAR:-default} and $VAR.
[3] GenAIScript / Microsoft doc — lists both ${env:VAR} and ${VAR} and gives examples of interpolation.
[4] Ona / Gitpod-style docs — shows ${file:...}, ${exec:...}, ${secret:...} usage for secrets/files.


🏁 Script executed:

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cat -n .cursor/mcp.json

Repository: zucky2021/ai-chatbot-api

Length of output: 1021


🏁 Script executed:

# Read the review guidelines to find prefix format
cat -n docs/development/coding-rules/review.md | head -50

Repository: zucky2021/ai-chatbot-api

Length of output: 432


want: MCP環境変数の参照構文を${env:APIDOG_ACCESS_TOKEN}に戻してください。

環境変数の参照が${env:APIDOG_ACCESS_TOKEN}から${APIDOG_ACCESS_TOKEN}に変更されています。MCP設定では${env:VAR}の明示的な形式が推奨されており、短縮形${VAR}の対応状況はクライアント実装によって異なります。Cursor IDEやClaude Desktopなど利用するMCPクライアントで確実に動作させるため、元の明示的な構文${env:APIDOG_ACCESS_TOKEN}の使用をお勧めします。

🤖 Prompt for AI Agents
.cursor/mcp.json around line 22: the MCP environment variable reference was
changed from the explicit form to a short form ("${APIDOG_ACCESS_TOKEN}");
revert it to the explicit MCP syntax "${env:APIDOG_ACCESS_TOKEN}" so clients
that require the explicit namespace (Cursor IDE, Claude Desktop, etc.) will
resolve the variable reliably—update the value to use
"${env:APIDOG_ACCESS_TOKEN}" exactly.

}
}
}
Expand Down
2 changes: 1 addition & 1 deletion .env.example
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
# MCP
APIDOG_PROJECT_ID=1058162
APIDOG_ACCESS_TOKEN=

# DB
POSTGRES_USER=chatbot
Expand Down
3 changes: 2 additions & 1 deletion backend/app/main.py
Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@
validation_exception_handler,
)
from app.presentation.middleware.request_id import RequestIDMiddleware
from app.presentation.routers import chat, health
from app.presentation.routers import chat, health, sse

# ログ設定
configure_logging(log_level=settings.LOG_LEVEL, json_logs=settings.JSON_LOGS)
Expand Down Expand Up @@ -85,6 +85,7 @@ async def lifespan(app: FastAPI) -> AsyncIterator[None]:
# ルーターの登録
app.include_router(health.router, prefix="/api/health", tags=["health"])
app.include_router(chat.router, prefix="/api/chat", tags=["chat"])
app.include_router(sse.router, prefix="/api/sse", tags=["sse"])

# MCPサーバーのマウント(有効な場合のみ)
# Claude Desktop、VS Code等のMCPクライアントから /mcp エンドポイントで接続可能
Expand Down
74 changes: 74 additions & 0 deletions backend/app/presentation/routers/sse.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,74 @@
"""
SSE(Server-Sent Events)エンドポイント
Apidogでのテスト用シンプル実装
"""

import asyncio
from collections.abc import AsyncGenerator

from fastapi import APIRouter
from fastapi.responses import StreamingResponse

router = APIRouter()


async def event_generator() -> AsyncGenerator[str, None]:
"""
SSEイベントを生成するジェネレーター
5回のイベントを1秒間隔で送信
"""
for i in range(1, 6):
# SSEフォーマット: "data: メッセージ\n\n"
yield f"data: Message {i}: Hello from SSE!\n\n"
await asyncio.sleep(1)

# 完了イベント
yield "data: [DONE]\n\n"


@router.get("/stream")
async def sse_stream() -> StreamingResponse:
"""
シンプルなSSEストリーミングエンドポイント
1秒間隔で5つのメッセージを送信し、最後に[DONE]を送信
"""
return StreamingResponse(
event_generator(),
media_type="text/event-stream",
headers={
"Cache-Control": "no-cache",
"Connection": "keep-alive",
"X-Accel-Buffering": "no", # Nginxのバッファリング無効化
},
)


async def countdown_generator(count: int) -> AsyncGenerator[str, None]:
"""
カウントダウンイベントを生成するジェネレーター
"""
for i in range(count, 0, -1):
yield f"event: countdown\ndata: {i}\n\n"
await asyncio.sleep(1)

yield "event: complete\ndata: Countdown finished!\n\n"


@router.get("/countdown/{count}")
async def sse_countdown(count: int = 10) -> StreamingResponse:
"""
カウントダウンSSEエンドポイント
指定した数からカウントダウン(デフォルト: 10)
"""
# 最大60秒に制限
count = min(count, 60)

return StreamingResponse(
countdown_generator(count),
media_type="text/event-stream",
headers={
"Cache-Control": "no-cache",
"Connection": "keep-alive",
"X-Accel-Buffering": "no",
},
)
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