> ## Documentation Index > Fetch the complete documentation index at: https://www.worldmonitor.app/docs/llms.txt > Use this file to discover all available pages before exploring further. # GetBilateralTariff > Applied tariff on one HS6 product between two countries (UNCTAD TRAINS). PRO-gated. Requires entitlement tier >= 1. ## OpenAPI ````yaml /api/TradeService.openapi.yaml get /api/trade/v1/get-bilateral-tariff openapi: 3.1.0 info: title: TradeService API version: 1.0.0 servers: - url: https://api.worldmonitor.app security: - WorldMonitorKey: [] - ApiKeyHeader: [] paths: /api/trade/v1/get-bilateral-tariff: get: tags: - TradeService summary: GetBilateralTariff description: >- Applied tariff on one HS6 product between two countries (UNCTAD TRAINS). PRO-gated. Requires entitlement tier >= 1. operationId: GetBilateralTariff parameters: - name: reporting_country in: query description: Importer, 3-digit UN M49 ("840"). EU members use the EU schedule. required: true example: '840' schema: type: string pattern: ^[0-9]{3}$ - name: partner_country in: query description: Exporter, 3-digit UN M49 ("484"). "000" returns MFN only. required: true example: '484' schema: type: string pattern: ^[0-9]{3}$ - name: hs_code in: query description: Six-digit HS subheading ("870323"). required: true example: '870323' schema: type: string pattern: ^[0-9]{6}$ - name: year in: query description: Tariff year; 0 = latest year TRAINS lists for the importer. required: false example: 2021 schema: type: integer format: int32 - name: jmespath in: query description: >- Optional JMESPath expression applied server-side to project or reduce the JSON response before it is returned (mirrors the MCP jmespath argument). Invalid expressions, expressions larger than 1024 UTF-8 bytes, or projections that exceed the 256 KB output cap return HTTP 400 with a {_jmespath_error, original_keys} envelope. Grammar and worked examples: https://www.worldmonitor.app/docs/mcp-jmespath. required: false example: keys(@) schema: type: string responses: '200': description: Successful response content: application/json: example: appliedRate: maxRate: 0 minRate: 0 nonAdValoremLines: 0 rate: 0 tariffLines: 1 basis: APPLIED_TARIFF_BASIS_PREFERENTIAL filingReporter: '840' groupPreferences: - groupCode: P22 groupName: North American Free Trade Agreement (NAFTA) rate: maxRate: 0 minRate: 0 nonAdValoremLines: 0 rate: 0 tariffLines: 1 hsCode: '870323' mfnRate: maxRate: 2.5 minRate: 2.5 nonAdValoremLines: 0 rate: 2.5 tariffLines: 1 nomenclature: H5 partnerCountry: '484' preferentialRate: maxRate: 0 minRate: 0 nonAdValoremLines: 0 rate: 0 tariffLines: 1 reportingCountry: '840' source: UNCTAD TRAINS via World Bank WITS sourceUrl: >- https://wits.worldbank.org/API/V1/SDMX/V21/datasource/TRN/reporter/840/partner/all/product/870323/year/2021/datatype/reported upstreamUnavailable: false year: 2021 schema: $ref: '#/components/schemas/GetBilateralTariffResponse' '400': description: Validation error content: application/json: schema: oneOf: - $ref: '#/components/schemas/ValidationError' - $ref: '#/components/schemas/JmespathProjectionError' '401': description: Missing or invalid API key. content: application/json: schema: $ref: '#/components/schemas/UnauthorizedError' '403': description: PRO entitlement access denied. headers: X-Billing-Verification: description: >- Present when the 403 is a billing-provider-confirmed subscription lapse (value subscription_lapsed, matching the body `code`). schema: type: string content: application/json: schema: $ref: '#/components/schemas/ForbiddenError' '429': description: Rate limit exceeded. headers: X-RateLimit-Limit: description: Maximum requests allowed in the active rate-limit window. schema: type: string X-RateLimit-Remaining: description: Requests remaining in the active rate-limit window. schema: type: string X-RateLimit-Reset: description: >- Unix epoch milliseconds when the active rate-limit window resets. schema: type: string Retry-After: description: Seconds to wait before retrying the request. schema: type: string content: application/json: schema: oneOf: - $ref: '#/components/schemas/Error' - $ref: '#/components/schemas/RateLimitError' '503': description: >- Service unavailable. Billing-verification responses include code and X-Billing-Verification; other gateway infrastructure failures use the generic GatewayError shape. headers: Retry-After: description: Seconds to wait before retrying (1-60). schema: type: string X-Billing-Verification: description: >- Billing-verification state that produced this response (matches the body `code`). schema: type: string X-Validation-Mode: description: >- Present with value degraded when user API-key validation is temporarily unavailable. schema: type: string X-RateLimit-Mode: description: >- Present with value degraded when a fail-closed rate-limit dependency is unavailable. schema: type: string content: application/json: schema: oneOf: - $ref: '#/components/schemas/BillingVerificationError' - $ref: '#/components/schemas/GatewayError' default: description: Gateway or handler error response. content: application/json: schema: oneOf: - $ref: '#/components/schemas/Error' - $ref: '#/components/schemas/GatewayError' security: - WorldMonitorKey: [] - ApiKeyHeader: [] - BearerAuth: [] components: schemas: GetBilateralTariffResponse: type: object properties: reportingCountry: type: string description: Importer code, as requested. partnerCountry: type: string description: Exporter code, as requested. hsCode: type: string description: HS6 code, as requested. year: type: integer format: int32 description: Year served; 0 when none. nomenclature: type: string description: HS edition the importer filed in ("H5" = HS 2017). basis: type: string enum: - APPLIED_TARIFF_BASIS_UNSPECIFIED - APPLIED_TARIFF_BASIS_PREFERENTIAL - APPLIED_TARIFF_BASIS_MFN - APPLIED_TARIFF_BASIS_MFN_PREFERENCES_NOT_REPORTED description: Source of applied_rate. appliedRate: $ref: '#/components/schemas/TariffRateDetail' mfnRate: $ref: '#/components/schemas/TariffRateDetail' preferentialRate: $ref: '#/components/schemas/TariffRateDetail' groupPreferences: type: array items: $ref: '#/components/schemas/GroupTariffPreference' source: type: string description: Data source. sourceUrl: type: string description: WITS query behind the rows. upstreamUnavailable: type: boolean description: True on a fault, false on a coverage answer. unavailableReason: type: string enum: - BILATERAL_TARIFF_UNAVAILABLE_REASON_UNSPECIFIED - BILATERAL_TARIFF_UNAVAILABLE_REASON_INVALID_REQUEST - BILATERAL_TARIFF_UNAVAILABLE_REASON_NOT_COVERED - BILATERAL_TARIFF_UNAVAILABLE_REASON_UPSTREAM_UNAVAILABLE description: >- Why no rate was served. NOT_COVERED is final; UPSTREAM_UNAVAILABLE is a fault. filingReporter: type: string description: 'Reporter code queried: "918" for EU members.' mfnAveRate: $ref: '#/components/schemas/TariffRateDetail' description: Applied tariff on one HS6 product between two countries. ValidationError: type: object properties: violations: type: array items: $ref: '#/components/schemas/FieldViolation' description: List of validation violations required: - violations description: >- ValidationError is returned when request validation fails. It contains a list of field violations describing what went wrong. JmespathProjectionError: description: >- Returned when a REST jmespath projection is invalid or exceeds the expression/output byte limits. properties: _jmespath_error: description: Projection error discriminator and details. type: string original_keys: description: Top-level keys or shape of the unprojected response. items: type: string type: array required: - _jmespath_error - original_keys type: object UnauthorizedError: type: object properties: error: type: string description: Human-readable error message. required: - error description: >- Returned when the API key is missing, malformed, or lacks current API access. ForbiddenError: type: object properties: error: type: string description: Human-readable entitlement failure reason. code: type: string enum: - subscription_lapsed description: >- Machine-readable denial code, present when the 403 is a billing-provider-confirmed subscription lapse (mirrored in the X-Billing-Verification response header). requiredTier: type: integer format: int32 description: Minimum entitlement tier required for this endpoint. currentTier: type: integer format: int32 description: Caller entitlement tier when known. planKey: type: string description: Caller plan key when known. required: - error description: >- Returned when a PRO-gated endpoint denies access because the caller has no resolved authenticated user, entitlements cannot be verified, or the caller lacks the required entitlement tier. Error: type: object properties: message: type: string description: Error message (e.g., 'user not found', 'database connection failed') description: >- Error is returned when a handler encounters an error. It contains a simple error message that the developer can customize. RateLimitError: type: object description: Returned when a gateway or handler rate limit rejects the request. properties: error: type: string description: Human-readable rate-limit failure reason. required: - error BillingVerificationError: type: object description: >- Returned with HTTP 503 when paid access cannot be confirmed right now: the billing provider is re-verifying a recently expired subscription, or the entitlement backend is unreachable. Retryable — honor Retry-After. properties: error: type: string description: Human-readable billing-verification failure reason. code: type: string enum: - renewal_verification_pending - renewal_verification_failed - entitlement_verification_unavailable description: >- Machine-readable billing-verification state, mirrored in the X-Billing-Verification response header. requiredTier: type: integer format: int32 description: >- Minimum entitlement tier required for this endpoint, when the denial came from a tier gate. required: - error - code GatewayError: type: object description: >- Returned by gateway infrastructure errors before an RPC handler runs, such as origin, routing, method, authentication, or quota checks. properties: error: oneOf: - type: string - type: object additionalProperties: true description: Gateway error reason or structured gateway failure details. required: - error TariffRateDetail: type: object properties: rate: type: number format: double description: Average ad valorem rate. minRate: type: number format: double description: Lowest line rate. maxRate: type: number format: double description: Highest line rate. tariffLines: type: integer format: int32 description: National tariff lines. nonAdValoremLines: type: integer format: int32 description: Specific or compound lines, excluded from the average. description: Simple average across the importer's national tariff lines, in percent. GroupTariffPreference: type: object properties: groupCode: type: string description: WITS group code ("A41"). groupName: type: string description: WITS group name; empty when WITS has none. rate: $ref: '#/components/schemas/TariffRateDetail' description: Preference granted to a partner group. Membership is not resolved. FieldViolation: type: object properties: field: type: string description: >- The field path that failed validation (e.g., 'user.email' for nested fields). For header validation, this will be the header name (e.g., 'X-API-Key') description: type: string description: >- Human-readable description of the validation violation (e.g., 'must be a valid email address', 'required field missing') required: - field - description description: FieldViolation describes a single validation error for a specific field. securitySchemes: WorldMonitorKey: type: apiKey in: header name: X-WorldMonitor-Key description: User-issued WorldMonitor API key. ApiKeyHeader: type: apiKey in: header name: X-Api-Key description: Alias header for the WorldMonitor API key (X-WorldMonitor-Key). BearerAuth: type: http scheme: bearer description: >- Bearer token: a Clerk-issued JWT for browser session flows, passed as Authorization: Bearer . ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.