Read-only access to TrailWeights' ultralight gear corpus — verified weights, creator video reviews, pack templates, and semantic gear search. Auth: none.
Fastest browser for AI agents to run web automation tasks, always free.
Download Free life-time →
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →
Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →TrailWeights MCP Server
Model Context Protocol server for the TrailWeights ultralight gear corpus: verified product weights, canonical specs, creator video reviews with timestamps, pre-scored field consensus, and in-house pack templates. 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 request. Anonymous calls get 401.
x-trailweights-key: <key>— or —Authorization: Bearer <key>
Get a free key at https://trailweights.com/mcp: auto-issued, emailed once,
500 tool calls per day (resets 00:00 UTC), 60 requests per minute. Past
the daily cap the server answers 429 with Retry-After. Prepaid credit
packs and per-call payment (x402 on Base, Stripe MPP) are listed on the same
page; 402 responses carry the payment challenge when a key is out of
allowance.
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. |
get_pack_template | template_id or slug | Full item list for one of the in-house pack templates. |
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
Featured
Fastest browser for AI agents to run web automation tasks, always free.
Download Free life-time →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →
