What the data for this category looks like
Coke market and yield data are primarily sourced from public APIs of domestic bulk commodity spot trading platforms and futures exchanges. Update cadence falls into two categories. Spot market data releases a full daily report once after daily market close. Futures market data is pushed in real time during trading sessions, with end-of-day aggregated data generated each day. Data is packaged in standardized JSON or CSV formats, including fields such as contract code, benchmark settlement price, daily transaction price, total open positions, total trading volume, and others. Price unit is yuan per ton, open position unit is trading lots, and total trading volume unit is tons.
Constraints on tool calling and plugins
The unique nature of coke’s data sources and update cadence creates clear constraints for tool calling and plugin configuration. First, exchange APIs enforce strict call frequency limits. Plugins must match these rate limiting rules to avoid being blocked. Second, the difference in update cadence between spot daily reports and real-time futures data requires plugins to support two pulling modes. These modes adapt to daily report generation and real-time monitoring scenarios respectively. Third, dedicated field names and units for coke differ from other bulk commodities. Plugin parameter mapping must strictly correspond to these dedicated fields to avoid parsing errors. Fourth, the release time for end-of-day aggregated data is fixed. Scheduled tasks for tool calls must align with this window to avoid pulling incomplete data.
How to configure settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
tool_timeout | 600 seconds | Single response times for coke futures data APIs are typically long, so sufficient timeout buffer must be reserved to avoid interruptions |
api_request_interval | 10–15 seconds | Matches rate limiting thresholds for exchange APIs to avoid triggering call restrictions |
field_mapping_strategy | Strictly match coke-specific fields | Prevents confusion with fields from other bulk commodities, ensuring accurate data parsing |
scheduled_fetch_time | 17:30 daily | Aligns with the release time for coke end-of-day data, ensuring complete daily market data is pulled |
error_retry_count | 2 retries | Addresses network fluctuations or temporary API failures, reducing invalid calls |
plugin_auth_type | API_KEY authentication | Complies with authentication standards for exchange public APIs, ensuring valid call legitimacy |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require individual analysis, and it is recommended to test on your own samples before finalizing settings.
Three common configuration errors
- Scenario: Using a database connection plugin to connect to PostgreSQL displays the prompt “Workflow verification failed, please check for missing or empty fields, and proper wiring”. Root cause: Dedicated fields for coke market data were not mapped to corresponding columns in the database table, resulting in failed field verification.
- Scenario: Tool calls run normally in debug mode but throw errors in runtime mode. Root cause: The scheduled task in runtime mode does not align with the release time window for coke end-of-day data, attempting to pull incomplete data that has not yet been generated.
- Scenario: Calls to third-party data plugins return connection failure errors. Root cause: Correct access rules were not configured in the container network, preventing access to public APIs from bulk commodity exchanges.
How to confirm proper configuration
- Call the tool to pull a single set of coke market data, verify that the returned fields include coke-specific identifying fields such as contract code, settlement price, and total trading volume.
- After configuring the scheduled pulling task, check task execution logs to confirm the pull time aligns with the release time window for coke end-of-day data.
- Test the database connection plugin to verify successful mapping and reading/writing of fields corresponding to coke data.
- Simulate multiple tool calls to confirm there are no error logs related to API rate limiting.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.