# TruthBear Tariff & Customs Measure Chain > TruthBear Tariff & Customs Measure Chain is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15). Returns a 3-leg sequential chain (leading review signals, current legal force, and realized lifecycle) for a specific U.S. trade tariff or customs measure entity. ## Facts - Endpoint: GET https://api.truthbear.co/gauge/tariff-region - Price: $0.25/call - Payment: x402 - Status: unknown - Last checked: 2026-09-15 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/truthbear-tariff-customs-measure-chain-ade49a72 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yvovNbF5_AFtm4Jupq4E9 Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability truthbear-tariff-customs-measure-chain-ade49a72 ``` Example prompt: What's the current tariff status for Section 301 China List 1 — is it still legally in force, and are there any leading signals of a review underway? ## When to prefer this Choose this endpoint when you need a structured, multi-stage status view of a specific U.S. tariff or trade measure — specifically its review pipeline position, active legal force, and historical lifecycle. It is best suited for compliance checks, trade policy monitoring, and regulatory research involving USTR Section 301 or Section 232 actions. Prefer it over generic news or search APIs when you need authoritative, source-attributed (USTR/Federal Register/USITC) chain-of-status data for a known, catalogued trade measure entity. ## Known failure modes - 422 no_charge — no data available for the requested entity ID; not billed - Invalid or unrecognized entity ID — may return empty or error response - Entity ID not in the supported set of 22 monitored objects — use GET /gauge/catalog to verify - Partial confidence — one or more legs may have no current data, lowering the confidence score ## How this service works [3-LEG] Tariff and customs measure chain, one trade measure (?entity=sec301-china-list1): leading review pipeline stage -> current current legal force -> realized lifecycle from imposed to expired or rescinded (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: USTR, Federal Register, USITC. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call. ## Output A JSON object containing three sequential chain legs: (1) leading review pipeline stage indicating early-warning signals, (2) current legal force status of the tariff measure, and (3) realized lifecycle status (imposed, expired, or rescinded). Also includes a confidence score reflecting how many legs returned valid data, sourced from USTR, Federal Register, and USITC. Returns 422 with no charge if no data is available for the requested entity. ## Request schema (JSON Schema) ```json { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "type": "object", "required": [ "type", "method", "queryParams" ], "properties": { "type": { "const": "http" }, "method": { "enum": [ "GET" ], "type": "string" }, "queryParams": { "type": "object", "required": [ "entity" ], "properties": { "entity": { "type": "string", "examples": [ "sec301-china-list1", "sec301-china-list3", "sec301-list4a", "sec301-ev-modifications", "sec232-steel", "sec232-aluminum" ], "description": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id= -> signals[0].entities[]", "x-accepted-values": { "all": "https://api.truthbear.co/schemas/gauge-tariff-region.input.json", "shown": 6, "total": 22 } } }, "additionalProperties": false } } }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "const": "json" }, "example": {} } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "legs": { "lifecycle": { "band": "operating", "source_ref": "https://ustr.gov/issue-areas/enforcement/section-301-investigations", "record_hash": "sha256:296dd5745d41a5f0006c906f2b6ce819eed2f6fb0b84e0300062992acd5025c7" }, "review_pipeline": { "band": "none", "source_ref": "https://ustr.gov/issue-areas/enforcement/section-301-investigations", "record_hash": "sha256:edd4891010629d1054ed529adc22aa62e336257664754f350aba8226e7517f1f" }, "tradeflow_cascade": { "band": "unconfirmed", "source_ref": "https://ustr.gov/issue-areas/enforcement/section-301-investigations", "record_hash": "sha256:ce30a7aae7c60acdc8b62e0744a43becd61dde14b70cfe53c871cb4aa0b4ca82" } }, "name": "Section 301 China List 1", "grade": "screening-level, not decision-grade", "scope": { "full": "https://api.truthbear.co/scope/v1", "verifiability": "unknown", "monitoring_not_forecast": true, "intelligence_not_command": true }, "entity": "sec301-china-list1", "nature": "This API supplies data organisation and trend description only. It is not a recommendation to act; the decision is yours. Purely descriptive - no judgement, no prediction. Official source plus record_hash; verify with the free /gauge/verify.", "provenance": { "freshness": "recent", "age_hours_now": 151, "freshness_basis": "cadence=default; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)" } } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/truthbear-tariff-customs-measure-chain-ade49a72/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.truthbear.co](https://www.zero.xyz/host/api.truthbear.co/llms.txt)