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StringSpec

R0· no sign-in

Lab measurements of nearly 800 tennis strings: search, compare and get recommendations.

v1.0.0 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality100strong
Trust95of 100
Uptime, 30 days96%
Latency p50282 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "stringspec": {
      "type": "http",
      "url": "https://stringspec.com/mcp"
    }
  }
}
claude mcp add --transport http stringspec https://stringspec.com/mcp
[mcp_servers.stringspec]
url = "https://stringspec.com/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "stringspec": {
      "type": "remote",
      "url": "https://stringspec.com/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "stringspec": {
      "type": "http",
      "url": "https://stringspec.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=stringspec&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vc3RyaW5nc3BlYy5jb20vbWNwIn0%3D"
}
{
  "servers": {
    "stringspec": {
      "type": "http",
      "url": "https://stringspec.com/mcp"
    }
  }
}
{
  "mcpServers": {
    "stringspec": {
      "httpUrl": "https://stringspec.com/mcp"
    }
  }
}
extensions:
  "stringspec":
    enabled: true
    name: "stringspec"
    type: streamable_http
    uri: "https://stringspec.com/mcp"
    timeout: 300

Quality 100 / 100strong

protocol100 · weight 25
  • pass
    protocol.modernsupports 2026-07-28 (server/discover)
  • pass
    protocol.statelessanswers without a session
  • pass
    protocol.transportstreamable HTTP
  • pass
    protocol.list_ttltool list is cacheable (ttlMs 600000)
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene100 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations4 of 4 tools declare readOnlyHint or destructiveHint
  • pass
    tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
  • pass
    tools.token_costabout 1,323 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

4 tools, about 1,323 tokens to load them all · tool set fd0ed92527c3 · checked 2026-10-19 15:48 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 95 / 100

provenance85
liveness98
freshness100
hygiene100

+repository +dns-namespace +website +reachable +uptime-96% +updated-12d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://stringspec.com/mcp streamable-httpnoneyes96%282 ms2026-07-28, 2025-11-25, 2025-06-18, 2025-03-262026-10-19

Tools (4)

compare_stringsread-onlySide-by-side measurements, percentiles, prices and buy links for 2 or 3 strings by name, with the StringSpec comparison page when there are two.
get_stringread-onlyEverything StringSpec has on one string, found by name (misspellings and missing gauges are fine): every measurement with its database percentile, elongation at 40, 51 and 62 lb, an estimated playable life, a tension adjustment versus the player's usual, how it ranks for each playing need (spin, comfort, control, power, tension hold, durability, feel), the closest alternatives, the retail price and a buy link. When the name matches several strings it returns the best match and lists the others.
recommend_stringsread-onlyRank the database for what a player wants, with StringSpec's string finder: one main need and an optional second one (spin (More spin and shape), comfort (Easier on my arm), control (More control, less launch), power (More power and depth), hold (Plays the same for longer), durable (Lasts longer before it breaks), feel (Best feel and touch)), adjusted for the racquet (string pattern, head size, frame stiffness) and with a material ruled out if asked. Returns a shortlist with a 0-100 fit, why each string fits, its price and buy link, and the finder link with the same answers filled in. For arm or elbow pain use need "comfort", and avoid "poly" when the player wants no polyester.
search_stringsread-onlySearch 791 lab-measured tennis strings by name, brand, material and gauge, sorted by a measurement or by price. Each result carries stiffness (lb/in), tension loss (%), energy return (%), spin potential, ball bite and string friction, each with its percentile in the database, plus the current retail price, a buy link and the StringSpec page. Returns at most 10 strings; narrow the filters rather than asking for more.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "com.stringspec/mcp",
  "icons": [
    {
      "src": "https://stringspec.com/assets/icon-512.png",
      "sizes": [
        "512x512"
      ],
      "mimeType": "image/png"
    }
  ],
  "title": "StringSpec",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://stringspec.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/BigBalli/stringspec-mcp",
    "source": "github"
  },
  "websiteUrl": "https://stringspec.com/connect/",
  "description": "Lab measurements of nearly 800 tennis strings: search, compare and get recommendations."
}