What the data for this category looks like
Thermal coal market and yield data primarily comes from domestic spot trading platforms, commodity index institutions, and futures exchanges. Spot data updates daily, with releases concentrated before 9 AM each day. Futures data updates during trading hours, with settlement prices released after market close. Data is provided as structured tables, including fields such as product identifier, origin, calorific value grade, benchmark price, price change amount, issuing institution, and release date. Price units are yuan per ton, calorific value units are large calories per kilogram, and there are no nested subfields.
What constraints do these characteristics impose on tool calls and plugins
The update rhythm and field structure of thermal coal data create clear constraints for tool call configuration. Daily updated data sources require scheduled tool call tasks to run once per day, to avoid rate limiting from high-frequency calls. Fixed release times require adjusting call windows to avoid cache refresh periods before release, to ensure access to the latest data. Field differences across multiple data sources require configuring dedicated field mapping rules, to prevent data parsing failures caused by mismatched field names. Regional access restrictions from different data sources require configuring proxy services, to ensure normal interface calls.
How to set configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
toolCallTimeout | 600 seconds | Thermal coal data source interfaces typically respond in 30-120 seconds. Setting 600 seconds prevents normal calls from being interrupted |
pluginProxyConfig | Enable and configure a complete HTTPS proxy address and port | Some data sources only allow access from domestic IP addresses. Proxies can bypass regional access restrictions |
requestRetryTimes | 2-3 times | Commodity data source interfaces have occasional fluctuations. Retrying can reduce the failure rate of single calls |
base64UploadEnabled | Enabled | Some market screenshots require upload and parsing in base64 format. Enabling this supports access to this type of data |
apiRateLimit | Set according to the QPS threshold of the target data source | Different data sources have independent call frequency limits. Matching the threshold avoids triggering rate limiting |
responseSchemaValidation | Enable and bind the dedicated field mapping rule for thermal coal | Field names returned by different data sources vary. Validation ensures data format meets expectations |
The parameter values provided on this page are general recommendations used as 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 misconfigurations
- Issue: Calling a base64-format market screenshot interface returns
400 Bad Request. The cause is failing to correctly enable thebase64UploadEnabledparameter, or failing to convert image data to a standardized base64 encoding format. - Issue: Plugin calls still fail after configuring an HTTPS proxy. The cause is failing to fill in the complete proxy address and port in
pluginProxyConfig, or the proxy not supporting the HTTPS protocol of the target data source. - Issue: The first conversation response delay exceeds 3 seconds, with subsequent calls functioning normally. The cause is failing to enable tool call preheating configuration, or the first call triggering cold start cache loading of the data source interface.
How to confirm the configuration is correct
- Perform a manual tool call, and check if the returned JSON data includes required fields such as origin, calorific value grade, and price change amount.
- View plugin call logs, and confirm that the proxy address in
pluginProxyConfighas taken effect, with no connection timeout or rejection errors. - Test uploading market images in base64 format, and confirm the interface returns parsed structured text with no format error prompts.
- Observe the first response time of three consecutive conversations, and confirm delay is stable with no sudden timeouts or abnormal errors.
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.