What the data for this category looks like
Survey and design policy and regulatory basis data comes primarily from official announcements of the Ministry of Housing and Urban-Rural Development, housing and urban-rural development departments of all provinces and municipalities, and industry standard documents released by the National Survey and Design Industry Association. Updates occur in real time when new policies are issued. Routine industry standards are reviewed for validity every quarter. The document structure includes fields such as document number, issuing authority, effective date, applicable region, professional category (architecture, municipal engineering, transportation, etc.), core clauses, attachments, and more. Field formats follow unified standards: Chinese characters plus numeric document numbers, dates in YYYY-MM-DD format, and professional categories use national standard industry terminology.
What constraints these characteristics impose on the "workflow orchestration" link
Workflows must verify the credibility of the issuing entity for retrieval results, to prevent non-official documents from being included in compliant responses. This aligns with the official sourcing requirements for survey and design policy data. The high update frequency of the data requires workflows to be configured with a scheduled synchronization mechanism. This ensures the policy clauses used are the latest valid versions. The document structure includes professional category and regional restrictions. The workflow retrieval phase must filter recalled content by the project's professional category and the user's region, to avoid incorrect matching of cross-professional or cross-regional policies. The long-text clause document characteristics require that chunking preserves the integrity of individual clauses. This prevents policy logic breaks from splitting that affect compliance judgments.
Configuration Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
| Chunk Length | 800–1200 characters | Survey and design policies are mostly long texts of complete individual clauses. This length preserves clause logic integrity and avoids misunderstandings caused by splitting across clauses. |
| Single Search Limit | Top 8 results | The number of survey and design policy entries is moderate. The top 8 results cover core compliance basis and avoid redundant results that interfere with AI judgment. |
| Context Window | 4000–6000 tokens | Recalled policy snippets and user questions must be fully included in the context, to ensure AI responses can accurately reference corresponding policy clauses. |
| System Prompt | Answer solely based on recalled survey and design policy documents, do not add external information | Ensure responses strictly correspond to original policy text and meet industry compliance review requirements. |
variables | Bind user's region and project's professional category | Accurately filter policy files matching the region and professional category, improving the targeting of recall results. |
nodeId | Associate with the knowledge base scheduled synchronization node ID, set synchronization interval to 7 days | Ensure policy data is synchronized with official releases, avoiding use of revoked or not-yet-effective clauses. |
Three Common Configuration Mistakes
- Phenomenon: After knowledge base search, returned results only contain fragmented text, and it is not possible to directly specify the complete policy clause corresponding to the original question for citation. Reason: The
variablesconfiguration is not used to map theqfield of search results to the context input of the AI node, causing the AI to fail to clearly associate the original question with policy entries. - Phenomenon: After the MCP tool call is completed, downstream workflow nodes show empty return values, and no valid output is present in logs. Reason: The output variables of the tool node are not bound in the
nodeIdconfiguration, causing the policy verification results returned by the tool to not be passed to subsequent links. - Phenomenon: The context and response content output by the AI node cannot be distinguished, making it impossible for subsequent conversation nodes to reuse policy snippets. Reason: The system prompt is not explicitly configured to limit responses to only use recalled policy content as the basis, causing blurry boundaries between context and responses.
How to Confirm Configuration Is Correct
- Trigger a test workflow, view the returned fields of the knowledge base search results, confirm that the region and professional category bound in
variableshave correctly filtered recalled content. - Run the workflow and view the AI node output, confirm that the context and response content correspond to recalled policy snippets and compliance answers based on the policy respectively.
- Check the scheduled synchronization node configured in
nodeId, confirm that the scheduled task of FastGPT v4.17.0 has triggered the knowledge base update, and the latest policy files have been included in the retrieval scope. - Simulate an MCP tool call, check whether downstream nodes can normally obtain the verification results returned by the tool, confirming that the variable transfer process is working properly.
The values provided here are common starting points, and should be evaluated against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.