HTTP Interfaces and External Systems for Chemical

What this category’s data looks like

The data for chemical pharmaceutical intelligent due diligence reports comes primarily from the National Medical Products Administration drug registration database, raw material supplier compliance files, publicly available pharmacopoeia standard datasets, and publicly available clinical trial reports. Data update cycles fluctuate with regulatory filing progress and supplier annual review cycles. There is no fixed uniform schedule.

Each individual report document includes two parts: structured fields and attachments. Structured fields cover drug generic names, CAS registry numbers, production batch numbers, compliance approval statuses, supplier credit ratings, and more. CAS registry numbers are globally unique string identifiers. Production batch numbers use custom formats combining letters and numbers. Compliance approval statuses are fixed enumeration types.

Most attachments are PDF-format clinical trial reports or regulatory filing documents. Individual attachments can reach tens of megabytes in size.

Constraints for HTTP interfaces and external systems

HTTP interfaces must support third-party data sources with different authentication rules. This requirement stems from the multi-source, decentralized nature of chemical pharmaceutical due diligence data. Supported methods include bearer token-based compliance database interfaces and OAuth2-based regulatory agency APIs.

HTTP interfaces must support exact match queries for core fields such as CAS registry numbers. This avoids result deviations caused by fuzzy queries.

HTTP interfaces must support chunked transfer or remote URL fetch modes. This prevents timeouts caused by transferring overly large data in a single request, due to the large size of some attachments.

HTTP interfaces must support incremental sync parameters. This only pulls updated data within a specified time range, reducing invalid request overhead. This addresses the irregular data update schedule.

Interface returned fields must strictly match the naming and values required by regulatory requirements for some compliance fields. No field formats may be modified without authorization.

How to set configurations

Configuration Item	Recommended Value	Rationale
`http_source_auth_type`	`bearer_token`	Most third-party regulatory data interfaces follow bearer token authentication specifications, which align with the authentication needs of chemical pharmaceutical due diligence data sources
`http_request_timeout`	`300 seconds`	Some raw material supplier qualification interfaces return large volumes of data, requiring sufficient response time to be reserved
`http_request_max_retries`	`3 times`	Regulatory agency interfaces may experience temporary rate limiting. A retry mechanism reduces the rate of request failures
`http_query_match_mode`	`exact`	Core chemical pharmaceutical fields such as CAS registry numbers require exact matching to avoid result deviations caused by fuzzy queries
`attachment_fetch_strategy`	`remote_url`	Attachments such as clinical trial reports are fetched via remote URLs, which adapts to the attachment storage methods of third-party databases
`incremental_sync_cycle`	`Calibrated to the data source update schedule`	Different data sources have different update frequencies. Matching the corresponding sync cycle avoids repeated pulls or missed updates

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 specific analysis. It is recommended to test on your own samples before finalizing settings.

Three common mistakes

Phenomenon: A 401 Unauthorized error is returned after calling the configured HTTP interface. Cause: http_source_auth_type and corresponding authentication parameters are not correctly configured, leading to third-party data source authentication failure.
Phenomenon: The number of returned results does not match expectations when pulling supplier data in batches. Cause: http_request_max_retries is not set. Temporary rate limiting on regulatory agency interfaces causes some requests to lose valid data without retry.
Phenomenon: When calling the FastAPI open port via an external script, base64-encoded image results cannot be obtained. Cause: http_response_content_type is not configured as application/json, leading to automatic transcoding of returned content that prevents correct parsing of base64 strings.

How to confirm configurations are correct

Call the configured HTTP interface, pass parameters for a chemical drug with a known CAS registry number, and verify that returned fields include preset fields such as approval_status and supplier_credit_level.
Review interface call logs to confirm that authentication parameters are correctly carried, with no logs related to authentication failures.
Initiate an incremental sync request, and verify that the update time of returned data matches the publicly available update records of the corresponding data source.
Upload the remote URL of a clinical trial attachment, and confirm that the interface can correctly fetch and parse the attachment content, with no file transfer failure prompts.

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.