Free Public MCP Server · Zero-Auth REST API · 28 Parametric Tables

Programmatic Amazon Hardware & Cable Search for AI Agents (No PA-API Gate, No 503 Bot Walls)

Coding and sourcing agents routinely fail when trying to look up off-the-shelf parts on Amazon. Direct fetches to amazon.com/dp/<ASIN> return HTTP 503, strip product specs behind FallbackDetailPage, or burn 1.4 MB of navigation JavaScript before truncating WebFetch at the <title> tag. Official Amazon PA-API 5.0 rejects new accounts until they already have 3 qualifying referral sales, and Amazon Business APIs require corporate onboarding with multi-week manual review and a 90-day inactivity revocation.

buyusbcables.com exposes 9,301 LLM-normalized, physics-checked Amazon products across 28 engineering categories (1,984 USB cables plus motors, bearings, linear rails, power supplies, connectors, DIN-rail controls, cameras, switches, SSDs, memory, and wire) over a zero-auth Streamable HTTP MCP endpoint, REST JSON API, OpenAPI 3.1 spec, and lightweight /p/<ASIN> HTML datasheets.

1. Connect via MCP (Streamable HTTP)

No API key, no npm install required. Point any Streamable HTTP MCP client at https://www.buyusbcables.com/api/mcp:

Claude Code:

claude mcp add --transport http buyusbcables https://www.buyusbcables.com/api/mcp

Cursor / Windsurf / Claude Desktop / OpenCode (mcpServers):

{
  "mcpServers": {
    "buyusbcables": {
      "url": "https://www.buyusbcables.com/api/mcp"
    }
  }
}

MCP tools exposed:

list_categories — all 28 categories, counts, and inferred field schemas (types, valid enums, min/max numeric bounds).
search_catalog — strict parametric filtering (eq, ne, min, max, contains) across any category. Unknown fields or out-of-enum values return loud validation hints instead of silent empty arrays.
get_product_by_asin — instant normalized spec lookup by bare ASIN or pasted amazon.com/dp/... URL.
search_usb_cables / get_usb_cable_by_asin — symmetric connector-orientation USB cable search (wattage, Gbps, right-angle, braided/coiled).
suggest_catalog_addition — request a new category or filter parameter.

2. Zero-Auth REST JSON & Clean HTML Datasheets

# 1. List all 28 categories + counts (add ?include=fields for full schemas)
curl -s "https://www.buyusbcables.com/api/catalog"

# 2. Inspect one category's filterable fields, enum values & numeric ranges
curl -s "https://www.buyusbcables.com/api/catalog/motors?schema=1"

# 3. Parametric search (24V DIN-rail PSUs >= 200W, cheapest first)
curl -s "https://www.buyusbcables.com/api/catalog/ac_dc_psus?output_power_w.min=200&output_voltage_dc_v=24&sort=price_asc&limit=5"

# 4. USB-C right-angle cables >= 100W and >= 10 Gbps
curl -s "https://www.buyusbcables.com/api/cables?end_a=USB-C&end_b=USB-C&end_a_orientation=right_angle&min_wattage=100&min_speed_gbps=10"

# 5. Lookup any indexed ASIN (JSON API or <8 KB WebFetch-friendly HTML datasheet)
curl -s "https://www.buyusbcables.com/api/product/B0B38GHRH8"
curl -s "https://www.buyusbcables.com/p/B0B38GHRH8"

3. Machine-Readable Discovery Files

/llms.txt

Full Markdown guide & operator reference

/openapi.json

OpenAPI 3.1 specification for tool/action loaders

/.well-known/mcp.json

MCP Streamable HTTP discovery manifest

/.well-known/agent-skills/buyusbcables/SKILL.md

AgentSkills file for Claude Code / OpenCode / Codex

4. Indexed Engineering Categories (28 Tables · 9,301 Parts)

usb_cables1,984

Point-to-point USB cables: connector A/B type, gender, straight vs right-angle, length, max wattage/amperage, Gbps, braided/coiled jacket.

power_cords215

AC power cords, extension cords and power strips: NEMA plug/receptacle configs, conductor AWG, length, amp/volt/watt ratings, outdoor rating.

ssds164

Solid state drives: capacity, form factor, interface, PCIe gen/lanes, sequential read/write MB/s, TBW endurance, DRAM cache.

memory183

DIMM/SODIMM memory: generation, capacity per module, module count, MT/s speed, CAS latency, ECC, voltage, form factor.

network_switches157

Ethernet switches: copper/SFP port counts and speeds, PoE budget and standard, management level, rack units, DC input range, operating temperature.

usb_hubs124

USB hubs: upstream/downstream port types and counts, USB generation, data rate, bus vs self powered, per-port current, industrial grade, mounting.

wire_terminals159

Crimp and solder terminals: kind, wire AWG range, stud size, material and plating, insulation, current/voltage rating, heat-shrink ratio.

connectors668

Circular, panel-mount and locking connectors: series, pin count, coding, contact gender, locking, mounting, IP rating, cable OD and wire AWG range.

ethernet_cables411

Ethernet patch and field cables: standard (Cat5e..Cat8), shielding, conductor AWG, bandwidth MHz, Gbps, PoE wattage, length, end A/B connector details.

coax_cables338

Coaxial cables and pigtails: coax standard (RG/LMR), impedance, max frequency GHz, outer OD, low-loss double shielding, end A/B connector type and gender.

ac_dc_psus338

AC-to-DC power supplies: output voltage and current, output watts, AC input range, form factor, cooling, efficiency, IP rating, UL/CE, dimensions.

dc_dc_converters288

DC-DC converters and regulators: input and output voltage ranges, output current/watts, topology, isolation, constant-current, adjustability, form factor.

batteries293

Battery packs and cells: chemistry, cell count (S), nominal voltage, capacity Ah, energy Wh, C-rating, continuous discharge A, BMS, connector series, dimensions.

cooling_fans212

Axial and blower cooling fans: frame size, thickness, voltage, current, airflow CFM, static pressure, noise dBA, RPM, bearing type, connector pins, IP rating.

circuit_breakers86

DIN-rail thermal-magnetic MCB circuit breakers: pole count (1P..4P), rated current, trip curve (B/C/D), AC/DC interrupt voltage rating, pitch width.

relays_contactors106

Two-sided switching devices (modular contactors, solid-state relays, DIN relay modules): Side A coil/control voltage & AC/DC regime, Side B switched load current, AC/DC load voltage, pole count and NO/NC contact form.

panel_switches59

Panel-mount pushbuttons, selector switches and mushroom E-stops: cutout diameter (16mm / 22mm), NO/NC contact form, rated current, AC/DC voltage rating, actuator color.

din_terminal_blocks26

Feed-through and ganged 35mm DIN-rail terminal blocks: wire AWG range, rated current and voltage, gang/pole count, pitch width, housing color.

power_meters20

DIN-rail and panel digital voltmeters, ammeters and energy monitors: AC/DC measurement voltage ceiling, max current rating, phase/pole count, mounting.

inserts_standoffs212

Threaded inserts, standoffs and spacers: thread designation and pitch, body length, OD/hex size, bore ID, material, pilot-hole and extrusion slot pitch.

wire_spools303

Bulk wire, cable and sleeving on spools: kind, conductor AWG and count, strand count, spool length, shielding, material, temperature and voltage rating, OD/ID.

motors1,269

Electric motors: motor type, frame size, voltage range, rated current, power W, torque Nm, speed RPM, Kv, gearbox type and ratio, shaft, feedback and driver.

hdmi_cables234

HDMI cable assemblies: end A/B connector type (A, mini C, micro D, automotive E), gender and orientation, length, named cable class, claimed Gbps, construction (passive copper / active copper / optical), advertised video modes, ARC/eARC/VRR/HDR claims.

camera_modules164

Board camera modules: host interface (USB UVC, MIPI CSI-2, DVP, GMSL, PoE), sensor chip and optical format, global vs rolling shutter, resolution MP and pixel dimensions, fps at full resolution, output formats, FOV and focal length, lens mount, focus type, IR filter and illuminator.

bearings258

Bearings: trade code, bore / outer diameter / width, rolling element (deep groove, angular contact, needle, tapered, thrust, spherical plain, bushing), seal (2RS/ZZ/open), housing (pillow, flange, V/U groove roller, rod end), dynamic and static load, max rpm, material.

linear_motion233

Linear rails, shafting and structural extrusion: kind (profile rail, supported round rail, round shaft, extrusion), series (MGN/MGW/HGH/HGW/SBR/V-Slot/T-Slot), series size, rail length, section width and height, shaft diameter, carriage blocks included and their style, accuracy grade.

transmissions249

Mechanical power transmission: timing belts and pulleys, spur/bevel/worm gears, roller chain and sprockets, shaft couplings, winch rope and sheaves — tooth profile, pitch or module, tooth count, pitch diameter, bore(s), belt or face width, reduction ratio, rope diameter and breaking load.

pumps548

Electric and hand pumps for water, fuel/oil, hydraulic oil, chemicals, air and vacuum: mechanism (diaphragm, peristaltic, centrifugal, gear, piston, rotary vane, flexible impeller, siphon), medium, AC/DC supply voltage, current and watts, free flow L/min, max pressure psi, head m, suction lift m, vacuum kPa, self-priming, submersible, run-dry, inlet/outlet port type and size, peristaltic tube ID.

How this stays free & unthrottled

Every API and MCP result returns an amazon_affiliate_url carrying ?tag=buyusbcable07-20. When your agent or app presents matching products to a human user, please keep that URL intact — as an amazon associate we earn from qualifying purchases. Those commissions cover ongoing scraping and LLM physics verification so the index requires zero API keys or per-call fees.