StringSpec

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

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compare_strings

Side-by-side measurements, percentiles, prices and buy links for 2 or 3 strings by name, with the StringSpec comparison page when there are two.

namesarray, required

Two or three string names.

Tools (4)

compare_strings

Side-by-side measurements, percentiles, prices and buy links for 2 or 3 strings by name, with the StringSpec comparison page when there are two.

read-only

Argument	Type	Description
names*	array	Two or three string names.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "names"
  ],
  "properties": {
    "names": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 120
      },
      "maxItems": 3,
      "minItems": 2,
      "description": "Two or three string names."
    }
  },
  "additionalProperties": false
}

get_string

Everything 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.

read-only

Argument	Type	Description
name*	string	The string's name, e.g. "Luxilon ALU Power 16L" or "RPM Blast".

Input schema (JSON)

{
  "type": "object",
  "required": [
    "name"
  ],
  "properties": {
    "name": {
      "type": "string",
      "maxLength": 120,
      "description": "The string's name, e.g. \"Luxilon ALU Power 16L\" or \"RPM Blast\"."
    }
  },
  "additionalProperties": false
}

recommend_strings

Rank 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.

read-only

Argument	Type	Description
also	string	An optional second need, weighted lower than the first.
head	string	Head size: small (under 98 sq in), mid (98-100), large (100 and up).
need*	string	The main thing the player wants.
avoid	string	gut (no natural gut), poly (no polyester), polyonly (polyester only).
frame	string	Frame feel: flex (flexible, arm-friendly), avg, stiff (stiff and powerful).
limit	integer	Shortlist length (default 8).
pattern

search_strings

Search 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.

read-only

Argument	Type	Description
sort	string	popular (a retailer's units-sold order, default), softest, stiffest, most_spin, best_tension_hold, most_power (energy return), cheapest.
brand	string	Brand name, e.g. "Babolat", "Luxilon", "Solinco".
gauge	string	Gauge label. A higher number is thinner, and an "L" gauge is thinner than its base (17L is thinner than 17).
limit	integer	How many to return (default 10).
query	string	Words from the string's name, e.g. "alu power", "hyper-g", "rpm blast".
material	string	Construction family. Polyester is the stiff spin-friendly monofilament; Nylon covers synthetic gut and multifilaments; Gut is natural gut.
max_price_usd	number	Only strings with a retail set price at or under this, in USD. Strings without a price are excluded when this is set.

{ "type": "object", "properties": { "sort": { "enum": [ "popular", "softest", "stiffest", "most_spin", "best_tension_hold", "most_power", "cheapest" ], "type": "string", "description": "popular (a retailer's units-sold order, default), softest, stiffest, most_spin, best_tension_hold, most_power (energy return), cheapest." }, "brand": { "type": "string", "maxLength": 60, "description": "Brand name, e.g. \"Babolat\", \"Luxilon\", \"Solinco\"." }, "gauge": { "enum": [ "16", "17", "16L", "18", "15L", "17L", "15", "19", "18L", "20" ], "type": "string", "description": "Gauge label. A higher number is thinner, and an \"L\" gauge is thinner than its base (17L is thinner than 17)." }, "limit": { "type": "integer", "maximum": 10, "minimum": 1, "description": "How many to return (default 10)." }, "query": { "type": "string", "maxLength": 80, "description": "Words from the string's name, e.g. \"alu power\", \"hyper-g\", \"rpm blast\"." }, "material": { "enum": [ "Polyester", "Nylon", "Nylon/Polyester", "Gut", "Nylon/Polyurethane", "Nylon/Zyex", "Nylon/Polyolefin", "Polyolefin" ], "type": "string", "description": "Construction family. Polyester is the stiff spin-friendly monofilament; Nylon covers synthetic gut and multifilaments; Gut is natural gut." }, "max_price_usd": { "type": "number", "maximum": 1000, "minimum": 1, "description": "Only strings with a retail set price at or under this, in USD. Strings without a price are excluded when this is set." }, "include_discontinued": { "type": "boolean", "description": "Include strings no longer sold (default false)." } }, "additionalProperties": false }