What data for this category looks like
Typically, data for this category covers daily circulation records from raw material warehouses, line-side warehouses, finished product warehouses, and material control departments. It includes documents such as receiving slips, putaway slips, material picking and return slips, lot ledgers, and inventory checklists. Data sources mainly include ERP/WMS systems, barcode or RFID collection devices, production work orders, warehouse location configurations, AGV transport systems, and weighing equipment. Update frequencies include real-time synchronization of warehouse location changes, daily updates of lot expiration dates and inventory quantities, and monthly full inventory verification. Core fields include material code, lot number, warehouse location code, expiration date, inspection status, and circulation quantity, with units mostly being pieces, pallets, or kilograms.
What constraints these characteristics impose on tool calling and plugins
Data for this category has scattered sources and large differences in update rhythms. Tool calling must adapt to the interface formats of multiple data sources such as ERP, WMS, and collection devices, and request parameters must be configured specifically to match the field rules of different systems. The accuracy of core fields such as lot number and expiration date directly impacts business compliance, so plugins must strictly validate the existence and format of returned fields. Real-time data calls require setting reasonable timeout thresholds to avoid process interruptions caused by temporary delays in AGV or weighing equipment; monthly inventory data can use reduced call frequencies to lower resource consumption. Additionally, full-chain traceability of material circulation requires tools to return results associated with work order and warehouse location information, ensuring data can be cross-verified. This scenario’s configuration is based on FastGPT v4.17.0.
How to set configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
| Workflow/API function-call configuration | Enabled by default | Ensures tool calls return structured data that can directly extract core business fields such as lot numbers and warehouse locations |
| Request timeout | 30–60 seconds | Matches the typical response duration of ERP and WMS interfaces, avoiding process interruptions caused by network delays |
| Batch return limit | Top 20 entries | Matches the reasonable scale of a single warehouse ledger query, preventing excessive returned data from occupying context space |
| Field validation rules | Validate lot number and expiration date fields | Ensures returned data includes core information required for warehousing business, avoiding invalid results |
| Retry trigger condition | Timeout or 5xx status codes | Addresses scenarios of temporary interface jitter or service unavailability, improving call stability |
Three common mistakes
- Phenomenon: After executing an MCP tool call in a workflow, subsequent nodes cannot obtain the returned warehouse location or lot data. Cause: The switch to output results to the context was not enabled in the tool configuration, so structured data returned by the tool was not written to the workflow variable pool.
- Phenomenon: After calling an HTTP interface to obtain a PPT-format warehouse inventory report, the file cannot be delivered to the asking user. Cause: No file storage and return plugin was configured. Only binary response content was stored in the context, and no accessible file link was generated.
- Phenomenon: When calling an ERP interface to query material lot information, the token consumption counted by the workflow does not match the actual token consumption of the API call. Cause: The pre-prompt for tool calls included redundant business text that was not simplified, and additional non-query content was counted toward token consumption.
How to confirm the configuration is correct
- Trigger a tool call, check if the returned result includes core business fields such as lot number and warehouse location code, confirming that the field validation configuration is active.
- Simulate an interface timeout or 5xx status code, check if the preset retry mechanism is triggered, confirming that the retry configuration is active.
- View the workflow variable pool, confirm that the returned data from the tool call has been correctly written, confirming that the result passthrough configuration is active.
- Trigger a file storage plugin call, check if an accessible file link is generated, confirming that the file delivery configuration is active.
The values given are common starting points and should be measured against the reader's own samples.