Zentria Flow MCP
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| ZENTRIA_API_KEY | No | Optional. An API key from https://zentriaflow.com/settings/api-keys, used only by `landed_cost`. It is sent only in the `X-API-Key` header of that request, and is never logged or written to a result. | |
| ZENTRIA_API_BASE | No | Optional. Default `https://zentriaflow.com`. Must be https (or a local development host). | https://zentriaflow.com |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
US tariff and landed-cost data from the Zentria Flow engine (zentriaflow.com). Use hts_search to find a tariff line, us_tariff_check for the duty layers of one origin, compare_origins for several origins. Quote rates only from tool results, give the date they were checked, and say they are planning estimates, not customs rulings.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| us_tariff_checkA | Every US import tariff layer for one HTS code from one country of origin, from the Zentria Flow engine: MFN duty, China Section 301, the forced-labor Section 301 tariff, Section 232 and Section 338 on Canada, with the total rate, exemptions, USMCA/CAFTA-DR cases and dated changes ahead. Use it whenever a US duty rate is needed; do not answer US tariff questions from memory. Planning estimate, not a customs ruling. |
| compare_originsA | The US tariff layers of one HTS code from 2 to 6 countries of origin, side by side, lowest total first. Calls the Zentria Flow engine once per origin, 2 seconds apart, so it takes a few seconds. Duty only: freight, fees and supplier price are not compared. Planning estimate, not a customs ruling. |
| hts_searchA | Find US tariff lines (8-digit HTSUS codes) by product words or the start of a code, from the official HTSUS descriptions. Use it to get a code for us_tariff_check. A search hit is a candidate, not a classification ruling. |
| landed_costA | Full landed cost of one shipment from the Zentria Flow keyed API: product value, freight, insurance, every duty layer, VAT/GST and fees, for 70+ countries. Needs the ZENTRIA_API_KEY environment variable (an API plan; the Sandbox plan is free). Each call counts against the plan quota. Planning estimate, not a customs ruling. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 4 tools
Each tool has a recognizable distinct job: code discovery (hts_search), single-origin duty lookup (us_tariff_check), multi-origin comparison (compare_origins), and full shipment cost (landed_cost). The only friction is that compare_origins is effectively a batched us_tariff_check, and landed_cost also returns duty layers, so an agent may briefly hesitate between the three duty-returning tools, though the descriptions resolve it.
All names are snake_case and readable, but the pattern is mixed: compare_origins is verb-first while us_tariff_check, hts_search and landed_cost are noun-first, and us_tariff_check carries a country prefix the others lack. It is parseable but not a predictable verb_noun convention.
Four tools is a tight, purposeful surface for a tariff/landed-cost engine, with each tool covering a distinct step in the workflow. It sits at the low end of the comfortable 3-15 range but does not feel thin given the narrow domain.
The surface forms a coherent pipeline: find an HTS code, price one origin, compare up to six origins, then roll everything into a landed cost across 70+ countries. Gaps are minor and workaroundable, such as no batch/BOM multi-line pricing and no explicit classification or ruling lookup beyond candidate search hits.