What the Data for This Category Looks Like
Industrial metals due diligence data primarily comes from global futures exchanges, domestic industry associations, public financial reports of mining and smelting enterprises, and customs import and export ledgers. Update frequencies cover real-time, intraday, monthly, and quarterly: futures quotes update in real time, industry supply and demand data is released monthly, and customs import and export data lags by 1-2 months. The document structure includes four categories: spot price lists, inventory ledgers, industrial chain research notes, and supply and demand balance sheets. Core fields include product quotes (mostly priced in USD/ton or CNY/ton), total inventory (unit: 10,000 tons), smelting capacity (unit: 10,000 tons/year), processing fees TC/RC (unit: USD/ton). Some documents contain raw data that uses multiple units interchangeably.
Constraints Imposed on Tool Calling and Plugins
Real-time market data has low latency requirements. Tool calls must be configured with short timeouts to avoid outdated data. Batch data pulls for monthly or quarterly data must adapt to pagination parameters. This prevents excessive data volume from being returned in a single call. Multiple document structures and large original files require plugins to support large file uploads and long-duration parsing. This avoids interruptions during processing. Fields with mixed units must be unified before tool calling. Otherwise, model output errors will occur. Batch processing for bulk due diligence reports requires configured parallel call limits. This prevents resource overload.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
UPLOAD_FILE_MAX_SIZE | 1500–2500 MB | Industrial metals due diligence reports often include industrial chain research notes and inventory ledger scans over 500 MB per page, so large file upload support is required |
PARSE_FILE_TIMEOUT_SECONDS | 600–1200 seconds | Long document parsing requires significant time, so this avoids interrupting the parsing process due to timeout |
PLUGIN_UPLOAD_VAR_ENABLE | Enabled | Custom workflows need to reference business variables such as specified exchange codes as upload parameters to adapt to dynamic calling requirements |
MINIO_BUCKET_RETENTION_DAYS | 30–90 days | Industrial metals data needs to retain historical versions for cross-cycle comparison, so a reasonable storage retention period must be configured |
TOOL_CALL_RETRY_TIMES | 2–3 times | Market-related tool calls are affected by network fluctuations, and retries can reduce call failure rates |
FILE_PARSE_SPLIT_LENGTH | 800–1200 characters | Industrial metals documents have many and long fields, so segmentation adapts to model context windows |
The parameter values provided on this page are common recommended 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 Mistakes
- Issue: File upload fails when calling the local MinerU plugin, returning the
413 Request Entity Too Largeerror. Cause: TheUPLOAD_FILE_MAX_SIZEparameter was not configured when starting the container, and the default limit is 2 MB, which cannot adapt to large industrial metals due diligence documents. - Issue: The upload file tool in custom workflows cannot reference business variables, and only supports passing fixed links. Cause: The
PLUGIN_UPLOAD_VAR_ENABLEconfiguration was not enabled, so the tool only allows static link input and cannot dynamically bind variable parameters. - Issue: Parsed documents cannot be saved after plugin calls, and the MinIO log returns
403 Forbidden. Cause: MinIO bucket permissions were not configured correctly, so the plugin does not have write permissions and cannot save parsed fragments of industrial metals due diligence reports.
How to Verify Proper Configuration
- Start the local MinerU container, run
curl -X POST http://localhost:8080/api/upload -F "file=@test large file", and check if the returned status code is 200 to verify that the upload size configuration is effective. - Configure the upload file tool in a custom workflow, try binding a business variable such as the LME copper code as an upload parameter, and check if the tool can correctly read the variable value.
- Access the MinIO console, create a test bucket and upload a small file, check if normal reading and storage works to verify that the MinIO configuration is correct.
- Call a market-related tool, run the call three consecutive times, check if the retry mechanism is triggered to verify that the
TOOL_CALL_RETRY_TIMESconfiguration is effective.
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.