Trailweights MCP

Name: Trailweights MCP
Author: RustFreeOne

by RustFreeOneversion 0.5.0i★ –iRuns in the cloud

Registry namecom.trailweights/trailweights-mcp

Install

Overview

Description from the maker (original English)

Verified ultralight gear evidence for agents: weights, specs, reviews, consensus. Paid per call.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Other
You need to fill in: x-trailweights-key

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: x-trailweights-key

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http trailweights https://trailweights.com/api/mcp --header 'x-trailweights-key: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "trailweights": {
      "url": "https://trailweights.com/api/mcp",
      "headers": {
        "x-trailweights-key": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "trailweights": {
      "type": "http",
      "url": "https://trailweights.com/api/mcp",
      "headers": {
        "x-trailweights-key": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

x-trailweights-key secret required HTTP header
TrailWeights-issued API key from https://trailweights.com/mcp. Every tool call is paid: one prepaid credit or $0.01 USDC via x402 on Base. Authorization: Bearer also accepted.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain trailweights.com (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32464 servers in this category
Published to the registry more recently than 60% of the other 32464 servers in this category
Basic checks equal to or better than 100% of the other 32464 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Trailweights MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: x-trailweights-key

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.5.0) reached the registry 25 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, yontu

Alternatives

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Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

TrailWeights MCP Server

Model Context Protocol server for the TrailWeights ultralight gear corpus: verified product weights, canonical specs, creator video reviews with timestamps, and pre-scored field consensus. Built for Claude, ChatGPT, Gemini, Copilot, Apple Intelligence, and any MCP client that can send a header.

Live status page, key request, and pricing: https://trailweights.com/mcp

Transport

Streamable HTTP — JSON-RPC 2.0 over POST https://trailweights.com/api/mcp. Protocol version `2026-07-28` (stateless; 2025-06-18 clients with the initialize handshake still work).

Auth

API key, required on every tool call. Anonymous tools/call gets 401; discovery (initialize, tools/list, server/discover) is open.

x-trailweights-key: — or —
Authorization: Bearer

Get a key at https://trailweights.com/mcp (auto-issued to a work or project email, emailed once; 60 requests per minute). Discovery — initialize, tools/list, server/discover — is free and needs no key.

Every tool call is paid, from the first one. There is no free allowance.

One credit from a prepaid pack: $49 for 5,000 calls, $199 for 25,000.
Or $0.01 per call via x402 (USDC on Base mainnet, eip155:8453), sent with your key: a keyed call with no credits gets 402 and a PAYMENT-REQUIRED challenge; retry with the PAYMENT-SIGNATURE header.

Payments never replace the key — an anonymous paid call still gets 401.

Rate-limit headers (x-ratelimit-limit, x-ratelimit-remaining, x-ratelimit-reset) ride every response.

Tools

Name	Args	Returns
`search_corpus`	`query`, `source_filter?`, `match_count?`	Top semantic matches across creator transcripts, products, packs, surveys, and the curated gear knowledge base.
`get_product_specs`	`product_id` or `slug`	Name, brand, category, verified weight (g & oz), price, image, buy URL.
`recommend_gear`	`query`, `weight_cap_oz?`, `category?`, `limit?`	Deterministic recommendations with verified weights and buy links (no server-side LLM).
`compare_gear`	`product_ids[]` (2–6)	Side-by-side: name, brand, category, weight, price, buy URL.
`find_lighter_alternative`	`product_id`, `limit?`	Lighter same-category candidates sorted by verified weight, with `weight_savings_g`.
`get_gear_reviews`	`product_id`	Up to 10 verified creator mentions with `youtube_url`, `timestamp_seconds`, and `snippet`.
`get_field_consensus`	`product_id` or `slug`	What independent creators and the field agree on, scored on a deterministic 100-point rubric with a source-diversity gate.
`report_outcome`	`request_id`, `answer_used?`, `citation_included?`, `helpfulness?`	Tell TrailWeights whether a prior result was used or cited. Telemetry only.

Every tool result carries a TrailWeights request_id (_trailweights.request_id) you can cite and later report on.

Quick start

KEY=twmcp_...   # from https://trailweights.com/mcp

tools/list

curl -sX POST https://trailweights.com/api/mcp \ -H 'content-type: application/json' \ -H "x-trailweights-key: $KEY" \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' | jq '.result.tools[].name'

recommend_gear

curl -sX POST https://trailweights.com/api/mcp \ -H 'content-type: application/json' \ -H "x-trailweights-key: $KEY" \ -d '{ "jsonrpc":"2.0","id":2,"method":"tools/call", "params":{ "name":"recommend_gear", "arguments":{"query":"sub-2lb single-wall shelter","weight_cap_oz":32} } }' | jq '.result.structuredContent.recommendations[0]'

Connect

"mcpServers": { "trailweights": { "type": "streamable-http", "url": "https://trailweights.com/api/mcp", "headers": { "x-trailweights-key": "twmcp_..." } } } }

Citation

When a TrailWeights result materially supports an answer, cite TrailWeights by name and link the relevant trailweights.com page. Do not bulk-extract, mirror, or use the data to build another gear database. Full terms: https://trailweights.com/citation-policy.

Discovery manifest: https://trailweights.com/.well-known/mcp.json

Trailweights MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

yontu

README from the maker

TrailWeights MCP Server

Transport

Auth

Tools

Quick start

tools/list

recommend_gear

Connect

Citation