Tool Calling and Plugins for Airport Aviation Financing

What data for this category looks like

Data sources for airport aviation financing daily reports include public announcements from civil aviation regulatory authorities, official disclosures from airport operating entities, and daily updates from third-party aviation financial data platforms. Data is released on a T+1 daily basis, covering airport-related financing updates from the previous day. Document structure includes two parts: structured tables and unstructured announcement summaries. Core fields include IATA 3-letter airport code, full name of financing entity, financing amount (unit: ten thousand RMB), financing method, financing purpose, release date, and data source. Dates use the YYYY-MM-DD format. Airport codes are 3 uppercase English letters.

What constraints do these characteristics impose on the tool calling and plugins workflow

Format differences across multiple public data sources require tool calling to support mixed parsing logic. It must handle both structured tables and unstructured PDF announcements. The daily update rhythm requires plugin configuration to align scheduled trigger cycles with data update frequencies. This prevents duplicate data pulls or delayed updates. Inconsistent financing amount units across announcements require built-in unit conversion logic in the plugin to standardize values to ten thousand RMB. Standardized airport code requirements mean tool calling must support filtering data by 3-letter code to narrow query scope. The mixed structured and unstructured document structure requires the plugin to support both field extraction and keyword scraping capabilities.

How to configure settings

Configuration Item	Recommended Value	Rationale
`UPLOAD_FILE_MAX_SIZE`	`200 MB`	Adapts to common file sizes of airport financing announcement PDFs, prevents upload failures
`data_source_whitelist`	`["caac.gov.cn", "airport-group.com.cn", "sec.gov.cn"]`	Limits valid public data sources, filters invalid or unauthorized content
`update_interval`	`86400 seconds`	Matches the daily update rhythm of financing daily reports, avoids frequent requests that trigger rate limits
`file_parse_timeout`	`300 seconds`	Allocates sufficient time to parse PDF announcement documents, prevents parsing timeouts
`stream_response`	`true` or `false`	Choose based on the processing capabilities of the downstream receiver. Use `true` for real-time display, `false` for batch processing
`amount_unit_convert`	`true`	Standardizes financing amount units to ten thousand RMB, meets unified format requirements for downstream analysis

The parameter values provided on this page are common starting points for configuration. Actual values are affected by material format, data volume, and business rules. Each scenario requires specific analysis. It is recommended to test on your own samples before finalizing settings.

Three common mistakes

A 413 Request Entity Too Large error occurs when calling the API. The cause is an incorrectly configured UPLOAD_FILE_MAX_SIZE parameter, which exceeds the platform's allowed file upload limit.
File parameter transfer fails during plugin calls, returning an invalid file parameter error. The cause is failure to pass file URLs or base64 encoded content in the format required by the plugin, or failure to bind the correct file variable name.
Frequent tool_call_failed error reports occur when using version v4.12.3 to call tools. The cause is that the tool calling logic of this version does not support multi-source announcement formats, and cannot correctly parse unstructured content.
Full results cannot be obtained after enabling stream_response: true. The cause is failure to correctly splice all segmented data returned in streaming mode, only reading partial content.

How to confirm proper configuration

Initiate a test call with the specified airport code parameter. Check if the returned results only include financing daily report data for the corresponding airport.
Upload a standard airport financing announcement PDF. Verify that the plugin can correctly extract core fields such as financing amount and financing method, with no obvious missing or incorrect values.
Enable the stream_response parameter. Call the interface and receive returned content segment by segment. Confirm that all segments spliced together produce complete daily report data.
View plugin operation logs. Confirm that links within the data source whitelist can be crawled normally, with no timeout or access denied records.

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.