usitc.gov API: Find US import duty rates
Finds matching lines of the US Harmonized Tariff Schedule for a product description or HTS code and returns their general, special-program and column 2 duty rates, units and notes on additional duties.
Unofficial. Not affiliated with or endorsed by usitc.gov.
Inputs
Values from the run on Oct 31, 2026, shown under Output.
- Product, required
product What is being imported, or an HTS code; for example, roasted coffee beans or 0901.21.00.
8507.60.00
- Max Results optional
max_results Maximum number of matching tariff lines, for example 10.
5
Whole number from 1 to 50. Default
10.
Input as JSON
{ "product": "8507.60.00", "max_results": 5}Output
{ "hts_edition": "2026 HTS Revision 20", "tariff_lines": [ { "hts_code": "8507.60.00", "page_link": "https://hts.usitc.gov/search?query=8507.60.00" , "description": "Electric storage batteries, including separators therefor, whether or not rectangular (including square); parts thereof: > Lithium-ion batteries", "column_2_rate": "40%", "special_rates": "Free under Generalized System of Preferences; Free under Australia trade agreement; Free under Automotive Products Trade Act; Free under Bahrain trade agreement; Free under Agreement on Trade in Civil Aircraft; Free under Chile trade agreement; Free under Colombia trade agreement; Free under African…", "unit_of_quantity": null, "general_duty_rate": "3.4%", "general_duty_percent": 3.4, "additional_duty_notes": null }, { "hts_code": "8507.60.00.10", "page_link": "https://hts.usitc.gov/search?query=8507.60.00.10" , "description": "Electric storage batteries, including separators therefor, whether or not rectangular (including square); parts thereof: > Lithium-ion batteries > Of a kind used as the primary source of electrical power for electrically powered vehicles of subheadings 8703.40, 8703.50, 8703.60, 8703.70 or 8703.80", "column_2_rate": "40%", "special_rates": "Free under Generalized System of Preferences; Free under Australia trade agreement; Free under Automotive Products Trade Act; Free under Bahrain trade agreement; Free under Agreement on Trade in Civil Aircraft; Free under Chile trade agreement; Free under Colombia trade agreement; Free under African…", "unit_of_quantity": "No., kg", "general_duty_rate": "3.4%", "general_duty_percent": 3.4, "additional_duty_notes": null }, { "hts_code": "8507.60.00.30", "page_link": "https://hts.usitc.gov/search?query=8507.60.00.30" , "description": "Electric storage batteries, including separators therefor, whether or not rectangular (including square); parts thereof: > Lithium-ion batteries > Other: > Battery energy storage systems fully encased within a housing, as described in statistical note 2 to this chapter", "column_2_rate": "40%", "special_rates": "Free under Generalized System of Preferences; Free under Australia trade agreement; Free under Automotive Products Trade Act; Free under Bahrain trade agreement; Free under Agreement on Trade in Civil Aircraft; Free under Chile trade agreement; Free under Colombia trade agreement; Free under African…", "unit_of_quantity": "No., kg", "general_duty_rate": "3.4%", "general_duty_percent": 3.4, "additional_duty_notes": null } ]}Code
curl https://api.fous.com/v1/runs \ -H "Authorization: Bearer $FOUS_API_KEY" \ -H "Content-Type: application/json" \ -d '{"method":"hts.usitc.gov/get_import_duty","input":{"product":"8507.60.00","max_results":5}}' # Save as fous.py, then run: python3 fous.pyimport json, os, timefrom urllib.error import HTTPErrorfrom urllib.request import Request, urlopenAPI = "https://api.fous.com/v1/runs" KEY = os.environ["FOUS_API_KEY"]HEADERS = { "Authorization": f"Bearer {KEY}", "Content-Type": "application/json" ,}def call(url, body=None): data = json.dumps(body).encode() if body else None request = Request(url, data, HEADERS) try: with urlopen(request, timeout=120) as r: return r.status, json.load(r) except HTTPError as error: message = json.load(error)["error"]["message"] raise RuntimeError(message) from errorstatus, run = call(API, { "method": "hts.usitc.gov/get_import_duty" , "input": { "product": "8507.60.00", "max_results": 5 }})# 202: still going after 30 s. Ask again until it ends.while status == 202: time.sleep(2) status, run = call(f"{API}/{run['id']}")print(json.dumps(run["data"], indent=2))// Save as fous.mjs, then run: node fous.mjsconst api = "https://api.fous.com/v1/runs" ;const headers = { Authorization: `Bearer ${process.env.FOUS_API_KEY}`, "Content-Type": "application/json" ,};let response = await fetch(api, { method: "POST", headers, body: JSON.stringify({ "method": "hts.usitc.gov/get_import_duty" , "input": { "product": "8507.60.00", "max_results": 5 } }), signal: AbortSignal.timeout(120_000),});let run = await response.json();// 202: still going after 30 s. Ask again until it ends.while (response.status === 202) { await new Promise((done) => setTimeout(done, 2_000)); response = await fetch(`${api}/${run.id}`, { headers }); run = await response.json();}if (!response.ok) throw new Error(run.error.message);console.log(run.data);# Connect your agent to Fous once, over MCP (Streamable HTTP):# https://api.fous.com/mcp# Set FOUS_API_KEY first: create a key at https://app.fous.com/keys.# Claude Codeclaude mcp add \ --scope user \ --transport http fous https://api.fous.com/mcp \ --header "Authorization: Bearer ${FOUS_API_KEY:?Set FOUS_API_KEY to your Fous API key}"# Codexcodex mcp add fous \ --url https://api.fous.com/mcp \ --bearer-token-env-var FOUS_API_KEY# Cursor, VS Code, Windsurf, Cline and morenpx -y add-mcp https://api.fous.com/mcp -g -n fous \ --header "Authorization: Bearer ${FOUS_API_KEY:?Set FOUS_API_KEY to your Fous API key}"# Then ask your agent:# "Use Fous to run hts.usitc.gov/get_import_duty# with {"product":"8507.60.00","max_results":5}"Over HTTP, the answer’s data holds the output. A run still going after 30 seconds answers 202 with its id: ask GET /v1/runs/{id} until it ends.
Schema
Input schema
{ "type": "object", "required": [ "product" ], "properties": { "product": { "type": "string", "description": "What is being imported, or an HTS code; for example, roasted coffee beans or 0901.21.00." }, "max_results": { "type": "integer", "default": 10, "maximum": 50, "minimum": 1, "description": "Maximum number of matching tariff lines, for example 10." } }}Output schema
{ "type": "object", "required": [ "hts_edition", "tariff_lines" ], "properties": { "hts_edition": { "type": [ "string", "null" ], "description": "Edition of the U.S. tariff schedule used." }, "tariff_lines": { "type": "array", "items": { "type": "object", "required": [ "hts_code", "description", "unit_of_quantity", "general_duty_rate", "general_duty_percent", "special_rates", "column_2_rate", "additional_duty_notes", "page_link" ], "properties": { "hts_code": { "type": "string" }, "page_link": { "type": "string" }, "description": { "type": "string" }, "column_2_rate": { "type": [ "string", "null" ] }, "special_rates": { "type": [ "string", "null" ] }, "unit_of_quantity": { "type": [ "string", "null" ] }, "general_duty_rate": { "type": [ "string", "null" ] }, "general_duty_percent": { "type": [ "number", "null" ] }, "additional_duty_notes": { "type": [ "string", "null" ] } }, "additionalProperties": false } } }, "additionalProperties": false}- Price
- 1 credit per completed run (1¢ with pay as you go); failed runs are free.
- Method
hts.usitc.gov/get_import_duty- Returns
- HTS edition; per tariff line: HTS code, full description, unit of quantity, general duty rate and percent, special rates, column 2 rate, additional duty notes, link
Use it from your agent
Give your agent this line. It reads SKILL.md, gets a Fous API key and connects the Fous MCP server. Its run then takes the method hts.usitc.gov/get_import_duty with the inputs above.
Ask your agent
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