get_daily_market_summary

Instructions

Implementation Reference

• src/massive_mcp/tools/aggregates.py:52-63 (handler)

  The main handler: an MCP tool decorated with @mcp.tool(). Calls the Massive API endpoint /v2/aggs/grouped/locale/us/market/stocks/{date} to return OHLC data for the entire US stock market on a given date.

  @mcp.tool()
  async def get_daily_market_summary(date: str, adjusted: bool = True) -> dict[str, Any]:
      """OHLC for the entire US stock market on a given trading date.
  
      Args:
          date: "YYYY-MM-DD".
          adjusted: Adjust for splits. Default true.
      """
      return await client.get(
          f"/v2/aggs/grouped/locale/us/market/stocks/{date}",
          {"adjusted": str(adjusted).lower()},
      )

• src/massive_mcp/tools/aggregates.py:12-13 (registration)

  Registration mechanism: the module exposes a register() function which is called from server.py line 48 (module.register(mcp, client)). The @mcp.tool() decorator registers the handler with the FastMCP server.

  def register(mcp: FastMCP, client: MassiveClient) -> None:
      @mcp.tool()

• src/massive_mcp/server.py:37-48 (registration)

  Server registration: loops through tool modules and calls their register() function to register all tools, including get_daily_market_summary from aggregates.py.

  for module in (
      aggregates,
      quotes,
      snapshots,
      tickers,
      news,
      reference,
      indicators,
      corporate,
      financials,
  ):
      module.register(mcp, client)

• src/massive_mcp/client.py:47-89 (helper)

  The HTTP client helper that performs the actual GET request with retry logic, error handling, and response trimming. Used by the get_daily_market_summary handler to call the Massive API.

  async def get(
      self, path: str, params: dict[str, Any] | None = None, *, trim: bool = True
  ) -> dict[str, Any]:
      merged: dict[str, Any] = {k: v for k, v in (params or {}).items() if v is not None}
      if self._settings.auth_mode == "query":
          merged["apiKey"] = self._settings.api_key
  
      last_exc: Exception | None = None
      for attempt in range(MAX_RETRIES):
          try:
              resp = await self._http.get(path, params=merged)
          except httpx.HTTPError as exc:
              last_exc = exc
              await asyncio.sleep(2**attempt)
              continue
  
          if resp.status_code == 429:
              retry_after = float(resp.headers.get("Retry-After", 2**attempt))
              await asyncio.sleep(min(retry_after, 30))
              continue
          if 500 <= resp.status_code < 600 and attempt < MAX_RETRIES - 1:
              await asyncio.sleep(2**attempt)
              continue
  
          if resp.status_code == 401:
              hint = (
                  "auth rejected — verify MASSIVE_API_KEY; "
                  "if you used MASSIVE_AUTH_MODE=bearer, try 'query' (or vice versa)"
              )
              raise MassiveAPIError(401, hint, _strip_secrets(str(resp.request.url)))
  
          try:
              data = resp.json()
          except ValueError:
              data = {"raw": resp.text}
  
          if not resp.is_success:
              msg = data.get("error") or data.get("message") or resp.reason_phrase or "request failed"
              raise MassiveAPIError(resp.status_code, str(msg), _strip_secrets(str(resp.request.url)))
  
          return _trim(data) if trim else data
  
      raise MassiveAPIError(0, f"network error after {MAX_RETRIES} retries: {last_exc}", path)