[EPIC] Indices API Tools

[copyleftdev]

Depends On: #2, #1

POLYMCP-008

Goals

• Index value data access
• Historical index performance
• Index snapshots
• Technical indicators on indices

Implement MCP tools for Polygon.io Indices API. Includes index values, aggregates, and snapshots for market indices like S&P 500, NASDAQ, and Dow Jones.

Acceptance Criteria

AC-1

• Given A user wants S&P 500 aggregates
• When The get_index_aggregates tool is called with ticker=I:SPX
• Then It returns OHLC bars for the index

AC-2

• Given A user wants NASDAQ daily open/close
• When The get_index_open_close tool is called with ticker=I:NDX, date=2024-01-15
• Then It returns open, high, low, close values for that date

AC-3

• Given A user wants index snapshot
• When The get_index_snapshot tool is called
• Then It returns current values for major indices with change percentages

Technical Context

Files:

• src/tools/indices/mod.rs
• src/tools/indices/aggregates.rs
• src/tools/indices/snapshots.rs

Out of Scope

• Index constituents
• Index rebalancing data

---

Source: epics/07-indices-tools.json
Content Hash: af210bfdb5d7127f