usedby
Which companies publicly use which AI and software tools, each line with its public source.
使うべきか
品質と安全性
A
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
~3,958トークン数（ツール定義）
~8.9 KB一般的なレスポンスサイズ
注意への影響は大きい（128k コンテキストの 3.09%）
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"usedby": {
"url": "https://www.usedby.ai/mcp"
}
}
}リモートエンドポイント
https://www.usedby.ai/mcpstreamable-httpできること
ツール一覧
ツール（5）
🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢search_tools(query, limit)
Find AI and software tools tracked on usedby by name, other product name, or what they do (category or topic, e.g. 'CRM', 'translation'), with how many companies publicly use each.
入力スキーマ
{
"type": "object",
"properties": {
"query": {
"type": "string",
"minLength": 1,
"maxLength": 100,
"description": "Tool name or category, e.g. 'cursor', 'coding', 'customer support'."
},
"limit": {
"description": "Rows to list (default 25, max 100). The usedby page has the full list.",
"type": "integer",
"minimum": 1,
"maximum": 100
}
},
"required": [
"query"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"notes": {
"description": "How to read this answer.",
"type": "array",
"items": {
"type": "string"
}
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"markdown": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"terms": {
"type": "string"
},
"citation": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The usedby page to cite: quote with a link to source.url."
},
"error": {
"description": "Set only when the input matched nothing or was invalid.",
"type": "string",
"enum": [
"not_found",
"bad_request",
"rate_limited",
"internal_error"
]
},
"message": {
"description": "What went wrong, with the next step, when error is set.",
"type": "string"
},
"suggestions": {
"description": "Close matches to ask again with, when error is not_found.",
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
}
},
"query": {
"description": "The text searched.",
"type": "string"
},
"tools": {
"description": "Matching tools, with their public customer counts.",
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"tagline": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"url": {
"type": "string"
},
"customers": {
"type": "object",
"properties": {
"total": {
"type": "number"
},
"named": {
"type": "number"
},
"signals": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Public lines: all, confirmed or observed, job-post signals."
},
"match": {
"type": "string",
"enum": [
"name",
"topic",
"close"
],
"description": "How the tool matched: name (or another name of the product), topic (category, family or tag), close (a near spelling: check it)."
}
},
"additionalProperties": {}
}
},
"truncated": {
"description": "More matches exist than listed.",
"type": "boolean"
}
},
"required": [
"source"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢who_uses(tool, limit)
Companies that publicly use a tool, strongest proof first, each with its proof level (CONFIRMED, OBSERVED, or SIGNAL: a job post, the weakest proof), source page and first public proof date.
入力スキーマ
{
"type": "object",
"properties": {
"tool": {
"type": "string",
"minLength": 1,
"maxLength": 200,
"description": "Tool slug or name, e.g. 'cursor', 'GitHub Copilot', 'harvey'."
},
"limit": {
"description": "Rows to list (default 25, max 100). The usedby page has the full list.",
"type": "integer",
"minimum": 1,
"maximum": 100
}
},
"required": [
"tool"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"notes": {
"description": "How to read this answer.",
"type": "array",
"items": {
"type": "string"
}
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"markdown": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"terms": {
"type": "string"
},
"citation": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The usedby page to cite: quote with a link to source.url."
},
"error": {
"description": "Set only when the input matched nothing or was invalid.",
"type": "string",
"enum": [
"not_found",
"bad_request",
"rate_limited",
"internal_error"
]
},
"message": {
"description": "What went wrong, with the next step, when error is set.",
"type": "string"
},
"suggestions": {
"description": "Close matches to ask again with, when error is not_found.",
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
}
},
"tool": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The tool, with its usedby page."
},
"customers": {
"type": "object",
"properties": {
"total": {
"type": "number",
"description": "Every public line, every proof level."
},
"named": {
"type": "number",
"description": "Confirmed and observed lines."
},
"mix": {
"type": "object",
"properties": {
"confirmed": {
"type": "number"
},
"observed": {
"type": "number"
},
"signal": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Lines per proof level."
},
"listed": {
"type": "array",
"items": {
"type": "object",
"properties": {
"company": {
"type": "string"
},
"slug": {
"type": "string"
},
"industry": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"proof": {
"type": "string",
"enum": [
"CONFIRMED",
"OBSERVED",
"SIGNAL"
],
"description": "Proof level, strongest first: CONFIRMED, OBSERVED, SIGNAL (a job post, the weakest)."
},
"firstPublicProof": {
"anyOf": [
{
"type": "object",
"properties": {
"date": {
"type": "string"
},
"kind": {
"type": "string",
"enum": [
"on_or_before",
"job_post",
"stated"
]
}
},
"additionalProperties": {}
},
{
"type": "null"
}
],
"description": "Upper bound of when the line became public: never an adoption date."
},
"source": {
"anyOf": [
{
"type": "object",
"properties": {
"url": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"method": {
"type": "string"
},
"capturedAt": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
}
},
"additionalProperties": {}
},
{
"type": "null"
}
],
"description": "The page that shows the line."
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
},
"description": "Customers, strongest proof first."
},
"truncated": {
"type": "boolean"
}
},
"additionalProperties": {}
},
"signals": {
"description": "Job-post lines, the weakest proof.",
"type": "object",
"properties": {
"count": {
"type": "number"
},
"note": {
"type": "string"
}
},
"additionalProperties": {}
},
"latestCheck": {
"type": "object",
"properties": {
"date": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"checkedLines": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Latest verification or capture of a public line."
}
},
"required": [
"source"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢company_stack(company, limit)
Tools a company publicly uses according to usedby, strongest proof first, each with its proof level (job-post signals last) and source page.
入力スキーマ
{
"type": "object",
"properties": {
"company": {
"type": "string",
"minLength": 1,
"maxLength": 200,
"description": "Company slug, name or website, e.g. 'stripe', 'Klarna', 'notion.so'."
},
"limit": {
"description": "Rows to list (default 25, max 100). The usedby page has the full list.",
"type": "integer",
"minimum": 1,
"maximum": 100
}
},
"required": [
"company"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"notes": {
"description": "How to read this answer.",
"type": "array",
"items": {
"type": "string"
}
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"markdown": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"terms": {
"type": "string"
},
"citation": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The usedby page to cite: quote with a link to source.url."
},
"error": {
"description": "Set only when the input matched nothing or was invalid.",
"type": "string",
"enum": [
"not_found",
"bad_request",
"rate_limited",
"internal_error"
]
},
"message": {
"description": "What went wrong, with the next step, when error is set.",
"type": "string"
},
"suggestions": {
"description": "Close matches to ask again with, when error is not_found.",
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
}
},
"company": {
"description": "The company, with its usedby page.",
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
},
"website": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
}
},
"additionalProperties": {}
},
"tools": {
"type": "object",
"properties": {
"total": {
"type": "number"
},
"named": {
"type": "number"
},
"mix": {
"type": "object",
"properties": {
"confirmed": {
"type": "number"
},
"observed": {
"type": "number"
},
"signal": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Lines per proof level."
},
"listed": {
"type": "array",
"items": {
"type": "object",
"properties": {
"tool": {
"type": "string"
},
"slug": {
"type": "string"
},
"vendor": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"category": {
"type": "string"
},
"proof": {
"type": "string",
"enum": [
"CONFIRMED",
"OBSERVED",
"SIGNAL"
],
"description": "Proof level, strongest first: CONFIRMED, OBSERVED, SIGNAL (a job post, the weakest)."
},
"firstPublicProof": {
"anyOf": [
{
"type": "object",
"properties": {
"date": {
"type": "string"
},
"kind": {
"type": "string",
"enum": [
"on_or_before",
"job_post",
"stated"
]
}
},
"additionalProperties": {}
},
{
"type": "null"
}
],
"description": "Upper bound of when the line became public: never an adoption date."
},
"source": {
"anyOf": [
{
"type": "object",
"properties": {
"url": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"method": {
"type": "string"
},
"capturedAt": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
}
},
"additionalProperties": {}
},
{
"type": "null"
}
],
"description": "The page that shows the line."
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
},
"description": "Tools the company uses, strongest proof first."
},
"truncated": {
"type": "boolean"
}
},
"additionalProperties": {}
},
"signals": {
"description": "Job-post lines, the weakest proof.",
"type": "object",
"properties": {
"count": {
"type": "number"
},
"note": {
"type": "string"
}
},
"additionalProperties": {}
},
"latestCheck": {
"type": "object",
"properties": {
"date": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"checkedLines": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Latest verification or capture of a public line."
}
},
"required": [
"source"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢recent_changes(days, tool, limit)
Companies newly listed as customers by tool vendors in the last N days, optionally for one tool. Departures are not published.
入力スキーマ
{
"type": "object",
"properties": {
"days": {
"description": "Window in days (default 30, max 365).",
"type": "integer",
"minimum": 1,
"maximum": 365
},
"tool": {
"description": "Only this tool (slug or name).",
"type": "string",
"minLength": 1,
"maxLength": 200
},
"limit": {
"description": "Rows to list (default 25, max 100). The usedby page has the full list.",
"type": "integer",
"minimum": 1,
"maximum": 100
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"notes": {
"description": "How to read this answer.",
"type": "array",
"items": {
"type": "string"
}
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"markdown": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"terms": {
"type": "string"
},
"citation": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The usedby page to cite: quote with a link to source.url."
},
"error": {
"description": "Set only when the input matched nothing or was invalid.",
"type": "string",
"enum": [
"not_found",
"bad_request",
"rate_limited",
"internal_error"
]
},
"message": {
"description": "What went wrong, with the next step, when error is set.",
"type": "string"
},
"suggestions": {
"description": "Close matches to ask again with, when error is not_found.",
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
}
},
"window": {
"description": "The period covered.",
"type": "object",
"properties": {
"days": {
"type": "number"
},
"since": {
"type": "string"
}
},
"additionalProperties": {}
},
"tool": {
"anyOf": [
{
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The tool, with its usedby page."
},
{
"type": "null"
}
]
},
"counts": {
"type": "object",
"properties": {
"companies": {
"type": "number"
},
"lines": {
"type": "number"
}
},
"additionalProperties": {}
},
"listed": {
"description": "Companies newly listed as customers, newest first.",
"type": "array",
"items": {
"type": "object",
"properties": {
"company": {
"type": "string"
},
"companySlug": {
"type": "string"
},
"tool": {
"type": "string"
},
"toolSlug": {
"type": "string"
},
"proof": {
"type": "string",
"enum": [
"CONFIRMED",
"OBSERVED",
"SIGNAL"
],
"description": "Proof level, strongest first: CONFIRMED, OBSERVED, SIGNAL (a job post, the weakest)."
},
"listedBy": {
"type": "string"
},
"listedAfter": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
}
},
"additionalProperties": {}
}
},
"truncated": {
"type": "boolean"
},
"tracking": {
"description": "How many tools are watched for changes.",
"anyOf": [
{
"type": "object",
"properties": {
"trackedTools": {
"type": "number"
},
"activeTools": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
}
},
"additionalProperties": {}
},
{
"type": "null"
}
]
}
},
"required": [
"source"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢compare(a, b, limit)
Two tools side by side: public customers with their proof mix, top industries, companies confirmed or observed on both, and vendor facts with their sources.
入力スキーマ
{
"type": "object",
"properties": {
"a": {
"type": "string",
"minLength": 1,
"maxLength": 200,
"description": "First tool slug or name."
},
"b": {
"type": "string",
"minLength": 1,
"maxLength": 200,
"description": "Second tool slug or name."
},
"limit": {
"description": "Rows to list (default 25, max 100). The usedby page has the full list.",
"type": "integer",
"minimum": 1,
"maximum": 100
}
},
"required": [
"a",
"b"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"notes": {
"description": "How to read this answer.",
"type": "array",
"items": {
"type": "string"
}
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"markdown": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"terms": {
"type": "string"
},
"citation": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The usedby page to cite: quote with a link to source.url."
},
"error": {
"description": "Set only when the input matched nothing or was invalid.",
"type": "string",
"enum": [
"not_found",
"bad_request",
"rate_limited",
"internal_error"
]
},
"message": {
"description": "What went wrong, with the next step, when error is set.",
"type": "string"
},
"suggestions": {
"description": "Close matches to ask again with, when error is not_found.",
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
}
},
"a": {
"description": "First tool.",
"type": "object",
"properties": {
"tool": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The tool, with its usedby page."
},
"customers": {
"type": "object",
"properties": {
"total": {
"type": "number"
},
"named": {
"type": "number"
},
"mix": {
"type": "object",
"properties": {
"confirmed": {
"type": "number"
},
"observed": {
"type": "number"
},
"signal": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Lines per proof level."
}
},
"additionalProperties": {}
}
},
"additionalProperties": {}
},
"b": {
"description": "Second tool.",
"type": "object",
"properties": {
"tool": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {},
"description": "The tool, with its usedby page."
},
"customers": {
"type": "object",
"properties": {
"total": {
"type": "number"
},
"named": {
"type": "number"
},
"mix": {
"type": "object",
"properties": {
"confirmed": {
"type": "number"
},
"observed": {
"type": "number"
},
"signal": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Lines per proof level."
}
},
"additionalProperties": {}
}
},
"additionalProperties": {}
},
"overlap": {
"type": "object",
"properties": {
"both": {
"type": "number",
"description": "Companies confirmed or observed on both tools."
},
"aOnly": {
"type": "number"
},
"bOnly": {
"type": "number"
},
"withSignal": {
"type": "number",
"description": "On both, but one side is a job-post signal."
},
"shared": {
"type": "array",
"items": {
"type": "object",
"properties": {
"company": {
"type": "string"
},
"slug": {
"type": "string"
},
"url": {
"type": "string"
}
},
"additionalProperties": {}
}
},
"truncated": {
"type": "boolean"
}
},
"additionalProperties": {}
},
"latestCheck": {
"type": "object",
"properties": {
"date": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"checkedLines": {
"type": "number"
}
},
"additionalProperties": {},
"description": "Latest verification or capture of a public line."
}
},
"required": [
"source"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}コミュニティ
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