TradingAgents/.planning/phases/01-tradier-data-layer/01-01-SUMMARY.md

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
01-tradier-data-layer	01	dataflows	tradier options greeks iv dataclass rest-api rate-limit		TradierRateLimitError exception for vendor fallback integration OptionsContract dataclass with 21 fields (Greeks, IV, market data) OptionsChain dataclass with to_dataframe() and filter_by_dte() get_options_expirations() with DTE filtering get_options_chain() string return for LLM tools get_options_chain_structured() typed return for programmatic use Tradier auth (TRADIER_API_KEY) and sandbox toggle (TRADIER_SANDBOX) Rate limit detection via X-Ratelimit-Available header and HTTP 429 Exponential backoff retry via make_tradier_request_with_retry()	01-02 02-greeks-math 03-volatility 04-gex options-agents	added patterns requests vendor-common-module typed-dataclass-contracts session-cache	created modified tradingagents/dataflows/tradier_common.py tradingagents/dataflows/tradier.py	Session cache keyed by symbol:min_dte:max_dte stores OptionsChain objects (not strings) Cache stores OptionsChain dataclass; string serialization happens at retrieval time Pitfall 2 and 5 normalization inline rather than in a shared helper	Tradier vendor common: auth + HTTP + rate limit mirrors alpha_vantage_common.py pattern OptionsContract/OptionsChain as canonical typed structures for all options data Dual return pattern: string for LLM tools, dataclass for computation modules	DATA-01 DATA-02 DATA-03 DATA-04 DATA-05	3min	2026-03-29

Phase 01 Plan 01: Tradier Data Layer Summary

Tradier vendor module with typed OptionsContract/OptionsChain dataclasses, ORATS Greeks, IV fields, DTE filtering, session cache, and rate limit handling

Performance

• Duration: 3 min
• Started: 2026-03-29T23:27:00Z
• Completed: 2026-03-29T23:30:00Z
• Tasks: 2
• Files modified: 2

Accomplishments

• Created tradier_common.py with auth, sandbox toggle, HTTP helper, and rate limit detection (header + HTTP 429)
• Created tradier.py with OptionsContract (21 fields) and OptionsChain (to_dataframe, filter_by_dte) dataclasses
• Implemented full options chain retrieval with DTE filtering, session caching, and Tradier API pitfall normalization

Task Commits

Each task was committed atomically:

1. Task 1: Create Tradier common module - 246c2b7 (feat)
2. Task 2: Create Tradier vendor module with typed dataclasses - f397044 (feat)

Files Created/Modified

• tradingagents/dataflows/tradier_common.py - Auth, base URL, rate limit error, HTTP helper with retry
• tradingagents/dataflows/tradier.py - Typed dataclasses and options chain retrieval with Greeks and IV

Decisions Made

• Session cache stores OptionsChain objects keyed by symbol:min_dte:max_dte; string serialization deferred to retrieval time for flexibility
• Pitfall normalizations (single-item string/dict responses) handled inline in each function rather than a shared utility
• Followed existing alpha_vantage_common.py pattern exactly for consistency

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required. Users will need TRADIER_API_KEY env var set when actually calling the API, but that is documented in the module docstrings and will be wired in Plan 02.

Known Stubs

None - all functions are fully implemented with real API integration.

Next Phase Readiness

• OptionsContract and OptionsChain dataclasses ready for consumption by Plan 02 (vendor routing integration)
• TradierRateLimitError ready for vendor fallback in interface.py
• Structured return (get_options_chain_structured) ready for downstream computation modules (Greeks math, GEX, volatility)

Self-Check: PASSED

• FOUND: tradingagents/dataflows/tradier_common.py
• FOUND: tradingagents/dataflows/tradier.py
• FOUND: commit 246c2b7
• FOUND: commit f397044

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Phase: 01-tradier-data-layer Completed: 2026-03-29