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MCPfinder 🔧🤖 ( @mcpfinder/server )

Entdecken Sie die einfachste Möglichkeit, Ihre Programmier- und KI-Agenten mit MCP – einer „API für KI“ – zu optimieren. MCPfinder ermöglicht Sprachmodellen, über Client-Anwendungen, die das MCP-Protokoll unterstützen, bei Bedarf nach neuen Funktionen zu suchen und diese zu installieren. Keine Programmierung oder manuelle Einrichtung erforderlich.

App Store für Agenten

Benutzer können Tools anfordern, über die die KI noch nicht verfügt, oder die KI kann ihre Fähigkeiten selbstständig erweitern, indem sie relevante MCP-Server findet. Von Codegeneratoren und Datenanalysatoren bis hin zu spezialisierten Wissenstools fungiert MCPfinder als Karte und Werkzeugkasten für die KI und verwandelt statische Modelle in sich entwickelnde, fähigkeitssuchende Agenten, die mit jeder Interaktion leistungsfähiger werden.

Plug-and-Play-Tools für LLMs

Beispiel

Diese Node.js-Anwendung implementiert einen MCP-Server (Model Context Protocol), der lokal neben MCP-Clients (wie Cursor, Claude Desktop, Windsurf) ausgeführt wird. Sie bietet Tools, die es der KI im Client ermöglichen, mit dem MCP-Ökosystem zu interagieren.

Insbesondere ermöglicht es dem KI-Assistenten:

  1. Entdecken Sie verfügbare MCP-Server, die im zentralen MCPfinder-Register registriert sind (über search_mcp_servers ).

  2. Rufen Sie Details zu bestimmten Servern ab (über get_mcp_server_details ).

  3. Verwalten Sie die lokale MCP-Serverkonfigurationsdatei der Clientanwendung (Hinzufügen/Aktualisieren über add_mcp_server_config , Entfernen über remove_mcp_server_config ).

Hinweis für KI-Agenten: Dieser Server ist die primäre Schnittstelle zum Suchen und Aktivieren neuer Tools und Funktionen, die vom Benutzer angefordert werden, sofern diese im aktuellen MCP-Toolset noch nicht verfügbar sind. Verwenden Sie zuerst search_mcp_servers , wenn der Benutzer nach einer Funktion fragt, die Sie nicht besitzen.

Schnellstart

Führen Sie in Ihrem Terminal das interaktive Setup-Tool aus, um die MCP-Konfigurationsdatei automatisch zu aktualisieren:

npx -y @mcpfinder/server install

Dieser Befehl führt Sie durch die Auswahl Ihres Clients (Cursor, VS Code, Claude usw.) und fügt den erforderlichen mcpfinder Eintrag zur richtigen Konfigurationsdatei hinzu (z. B. ~/.cursor/mcp.json ). Weitere Informationen finden Sie unter „Ausführen aus der Quelle“ und „Befehle und Optionen“, wenn Sie direkt mit dem Quellcode arbeiten.

Related MCP server: MCP Server

Manuelle Konfiguration

Um einen MCP-Client manuell zu konfigurieren, müssen Sie seine JSON-Konfigurationsdatei erstellen oder ändern, um einen Eintrag für mcpfinder einzuschließen.

Struktur der Konfigurationsdatei:

{
  "mcpServers": { 
    "mcpfinder": {
      "command": "npx",
      "args": [
        "-y",
        "@mcpfinder/server"
      ]
    },
  }
}

Hinweis: Für Visual Studio Code ( settings.json ) muss der Schlüssel der obersten Ebene für MCP-Konfigurationen servers statt mcpServers sein.

Ausführen von der Quelle

  • Klonen Sie dieses Repository, z. git clone https://github.com/mcpfinder/server

  • Führen Sie node index.js für den Stdio-Modus oder node index.js --http für den HTTP-Modus aus.

Befehle und Optionen

Beim Ausführen aus der Quelle ( node index.js ) kann das Skript auf verschiedene Arten aufgerufen werden:

Ausführen des Servers (Standardverhalten): Wenn kein Befehl angegeben ist, startet index.js den MCP-Server.

  • Stdio-Modus (Standard):

    node index.js
  • HTTP-Modus:

    node index.js --http
    • --port <number> : Geben Sie den Port für den HTTP-Modus an (Standard: 6181 oder Umgebungsvariable MCP_PORT ).

    • --api-url <url> : Geben Sie die von den Tools verwendete MCPfinder Registry API-URL an (Standard: https://mcpfinder.dev oder MCPFINDER_API_URL Umgebungsvariable).

Befehle ausführen:

  • install : Führen Sie das interaktive Setup aus, um eine Clientanwendung zu konfigurieren.

    node index.js install
  • register : Damit Server-Herausgeber ihr MCP-Serverpaket beim MCPFinder-Register registrieren können.

    node index.js register

Hilfe erhalten:

  • --help : Zeigt die Hilfemeldung mit detaillierten Befehlen und Optionen an.

    node index.js --help

Der Server verwendet die folgenden Umgebungsvariablen:

  • MCPFINDER_API_URL : Die Basis-URL für die MCPfinder Registry API. Der Standardwert ist https://mcpfinder.dev .

  • MCP_PORT (nur HTTP-Modus): Die Portnummer, auf der der Server lauscht. Der Standardwert ist 6181 .

Mitgelieferte Tools

Dieser MCP-Server stellt dem verbundenen KI-Assistenten die folgenden Tools zur Verfügung:

1. search_mcp_servers

  • Beschreibung: Durchsucht die MCPfinder-Registrierung nach verfügbaren MCP-Servern. Dies ist das primäre Tool zum Entdecken und Zugreifen auf neue Tools, Methoden, Funktionen oder Fähigkeiten.

  • Eingabeschema:

    • query (Zeichenfolge, optional): Schlüsselwörter, nach denen im Toolnamen oder in der Beschreibung gesucht werden soll.

    • tag (Zeichenfolge, optional): Spezifisches Tag, nach dem gefiltert werden soll.

  • Ausgabe: Eine Liste passender Serverzusammenfassungen (Server-ID, Name, Beschreibung, URL, Tags). Der typische nächste Schritt ist die Verwendung get_mcp_server_details für weitere Informationen oder die direkte Installation add_mcp_server_config .

⚠️ Hinweis: Die Registrierung enthält derzeit mehrere hundert Server, die lokal mit npx im stdio -Modus ausgeführt werden können, ohne dass Umgebungsvariablen für den Basisbetrieb erforderlich sind. Zukünftige Updates werden die Unterstützung auf eine größere Auswahl an Servern erweitern, einschließlich kostenpflichtiger und kommerzieller Optionen, die Umgebungsschlüssel erfordern.

2. get_mcp_server_details

  • Beschreibung: Ruft detaillierte Informationen zu einem bestimmten MCP-Server aus der Registrierung ab, einschließlich des vollständigen Manifests und grundlegender Installationsvorschläge (Befehl, Umgebungsvariablen). Verwenden Sie dies, nachdem Sie über search_mcp_servers eine Server-ID gefunden haben, um weitere Informationen zu erhalten, bevor Sie sie möglicherweise hinzufügen.

  • Eingabeschema:

    • id (Zeichenfolge, erforderlich ): Die eindeutige Server-ID des MCPfinders, die von search_mcp_servers abgerufen wurde.

  • Ausgabe: Das detaillierte Servermanifest und Installationshinweise. Im nächsten Schritt wird der Server mit add_mcp_server_config installiert.

3. add_mcp_server_config

  • Beschreibung: Fügt die Konfiguration für einen bestimmten MCP-Server in der lokalen Konfigurationsdatei der Client-Anwendung hinzu oder aktualisiert sie (z. B. Cursors ~/.cursor/mcp.json ). Sie müssen entweder client_type ODER config_file_path angeben.

  • Eingabeschema:

    • server_id (Zeichenfolge, erforderlich ): Eine eindeutige Kennung für den Serverkonfigurationseintrag (die von search_mcp_servers abgerufene MCPfinder-ID).

    • client_type (Zeichenfolge, optional): Der Typ der Client-Anwendung (bekannte Typen werden dynamisch bestimmt, Beispiele: 'cursor' , 'claude' , 'windsurf' ). Schließt sich gegenseitig mit config_file_path aus. Verwenden Sie dies für Standard-Client-Installationen.

    • config_file_path (Zeichenfolge, optional): Ein absoluter Pfad oder ein Pfad, der mit ~ (Home-Verzeichnis) beginnt, zur Ziel-JSON-Konfigurationsdatei (z. B. /path/to/custom/mcp.json oder ~/custom/mcp.json ). Schließt sich gegenseitig mit client_type aus. Verwenden Sie dies für nicht standardmäßige Speicherorte oder benutzerdefinierte Clients.

    • mcp_definition (Objekt, optional): Definiert die Serverkonfiguration. Wenn diese Angabe weggelassen wird oder bestimmte Felder fehlen, werden die Standardwerte basierend auf der server_id aus dem MCPfinder-Register abgerufen.

      • command (Array von Zeichenfolgen, optional): Der Befehl und seine Argumente (z. B. ["npx", "-y", "my-mcp-package"] ). Wenn dieser Befehl weggelassen wird oder unten nur env und workingDirectory angegeben werden, wird der Standardbefehl aus der Registrierung abgerufen.

      • env (Objekt, optional): Umgebungsvariablen (z. B. {"API_KEY": "YOUR_KEY"} ). Werden mit den Standardwerten zusammengeführt, wenn command weggelassen wird.

      • workingDirectory (Zeichenfolge, optional): Das Arbeitsverzeichnis für den Serverprozess. Wird mit den Standardeinstellungen zusammengeführt, wenn command weggelassen wird.

  • Ausgabe: Eine Erfolgs- oder Fehlermeldung.

  • Hinweis: Der Schlüssel zum Speichern der Serverkonfiguration in der JSON-Datei (unter mcpServers oder servers ) wird automatisch basierend auf der registrierten URL des Servers (abgerufen über die server_id ) generiert. Die angegebene server_id dient als Fallback, falls kein passender Schlüssel aus der URL abgeleitet werden kann. Das Tool erkennt automatisch anhand der vorhandenen Dateistruktur, ob mcpServers oder servers als Schlüssel der obersten Ebene verwendet werden soll. Standardmäßig wird mcpServers verwendet.

4. remove_mcp_server_config

  • Beschreibung: Entfernt die Konfiguration für einen bestimmten MCP-Server aus der lokalen Konfigurationsdatei der Client-Anwendung. Sie müssen entweder client_type ODER config_file_path angeben. Die angegebene server_id muss mit dem beim Hinzufügen des Servers verwendeten Konfigurationsschlüsselnamen übereinstimmen (der normalerweise aus der URL des Servers abgeleitet wird, siehe Hinweis add_mcp_server_config ).

  • Eingabeschema:

    • server_id (Zeichenfolge, erforderlich ): Die eindeutige Kennung (Konfigurationsschlüsselname) des zu entfernenden Serverkonfigurationseintrags.

    • client_type (Zeichenfolge, optional): Der Typ der Client-Anwendung (bekannte Typen werden dynamisch bestimmt, Beispiele: 'cursor' , 'claude' , 'windsurf' ). Schließt sich gegenseitig mit config_file_path aus.

    • config_file_path (Zeichenfolge, optional): Ein absoluter Pfad oder ein mit ~ beginnender Pfad (Home-Verzeichnis) zur Ziel-JSON-Konfigurationsdatei. Schließt sich mit client_type gegenseitig aus.

  • Ausgabe: Eine Erfolgs- oder Fehlermeldung, die angibt, ob der Eintrag gefunden und entfernt wurde.

Sicherheitsüberlegungen

Die Tools add_mcp_server_config und remove_mcp_server_config ändern Dateien auf dem lokalen System des Benutzers. Dieser Server selbst führt keine Berechtigungsprüfungen durch; er verlässt sich bei der Sicherheitsdurchsetzung vollständig auf den aufrufenden Client.

Beitragen

Für Beiträge wenden Sie sich bitte an: mcpfinder(dot}dev[at}domainsbyproxy{dot]com

Lizenz

Dieses Projekt ist unter der GNU Affero General Public License v3.0 lizenziert – weitere Informationen finden Sie in der Datei LICENSE .

Das bedeutet, dass Sie die Software frei verwenden (auch kommerziell), ändern und weitergeben können. Wenn Sie jedoch eine geänderte Version verwenden, müssen Sie diese auch öffentlich teilen.


Abzeichen

Available Tools

5 tools
add_mcp_server_configA

Enables capabilities (e.g., tools, features) from a specific MCP server/tool. Add or update its configuration in the client application (e.g., Cursor, Claude Desktop, Windsurf, Claude Code, Codex) using server_id obtained from search_mcp_servers results. Provide EITHER client_type (see available options) OR config_file_path to specify the target config file.

ParametersJSON Schema
NameRequiredDescriptionDefault
client_typeNoThe type of client application (currently supported: 'cursor', 'claude', 'windsurf', 'claude-code', 'codex'). Mutually exclusive with config_file_path.
config_file_pathNoAbsolute path or path starting with '~' to the config file. Mutually exclusive with client_type.
server_idYesA unique MCPFinder ID of the MCP server received from search_mcp_servers.
mcp_definitionNoThe MCP server definition object. Optional.
claude_pathNoFull path to claude executable (only used for claude-code client_type when claude command is not in PATH).

TDQS

A4.1/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It does reveal that this tool performs configuration changes ('add or update its configuration'), which implies mutation/write operations, but doesn't specify whether this requires special permissions, whether changes are reversible, or what happens on success/failure. It mentions 'defaults are fetched/merged' for the command parameter, which adds useful context about default behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is efficiently structured with three sentences that each serve distinct purposes: stating the tool's function, specifying prerequisites, and clarifying parameter usage. There's no redundant information, and key guidance is front-loaded in the first sentence.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a configuration mutation tool with 5 parameters (including nested objects) and no annotations or output schema, the description provides adequate but incomplete context. It covers the basic purpose and parameter relationships well, but lacks details about behavioral outcomes, error conditions, or what constitutes successful configuration. Given the complexity, more complete behavioral disclosure would be beneficial.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all 5 parameters thoroughly. The description adds some value by explaining the mutual exclusivity between client_type and config_file_path and clarifying that server_id comes from search_mcp_servers, but doesn't provide additional semantic context beyond what's in the schema descriptions. This meets the baseline for high schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('enables', 'add or update') and resources ('capabilities from a specific MCP server/tool', 'configuration in the client application'). It distinguishes this from sibling tools like search_mcp_servers (which finds servers) and remove_mcp_server_config (which removes configurations).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit guidance on when to use this tool: it specifies that server_id should be 'obtained from search_mcp_servers results' and provides clear alternatives between client_type and config_file_path ('Provide EITHER client_type OR config_file_path'). This gives the agent concrete prerequisites and decision criteria.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_mcp_server_detailsA

Retrieves detailed information about a specific MCP server/tool from the registry, including its manifest and installation details. Use this after finding a tool with search_mcp_servers to get more information, or directly use add_mcp_server_config to install it.

ParametersJSON Schema
NameRequiredDescriptionDefault
idYesThe unique MCPFinder ID of the MCP server received from search_mcp_servers.

TDQS

A4.2/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It describes the tool's purpose and usage context well, but lacks details on behavioral traits like error handling, response format, or any limitations (e.g., rate limits, authentication needs). The description doesn't contradict any annotations, but could provide more operational context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences that are front-loaded with the core purpose and efficiently provide usage guidelines. Every sentence adds value without redundancy, making it appropriately sized and well-structured for quick understanding.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's low complexity (1 parameter, no output schema, no annotations), the description is largely complete for its purpose and usage. However, without annotations or an output schema, it could benefit from more details on what the retrieved information includes or behavioral aspects, leaving a minor gap in full contextual understanding.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema description coverage is 100%, with the single parameter 'id' fully documented in the schema. The description does not add any parameter-specific details beyond what the schema provides (e.g., format examples or constraints), so it meets the baseline for high schema coverage without compensating value.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Retrieves detailed information') and resource ('about a specific MCP server/tool from the registry'), including what information is retrieved ('manifest and installation details'). It distinguishes from sibling tools by specifying this is for getting detailed information after searching, not for searching, adding, removing, or streaming.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly provides when to use this tool ('after finding a tool with search_mcp_servers to get more information') and when to use an alternative ('or directly use add_mcp_server_config to install it'). This gives clear guidance on the tool's role in the workflow relative to its siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

remove_mcp_server_configA

Removes the configuration for a specific MCP server/tool from the client application (e.g., Cursor, Claude Desktop, Windsurf, Claude Code, Codex). Provide EITHER client_type (see available options) OR config_file_path to specify the target config file.

ParametersJSON Schema
NameRequiredDescriptionDefault
client_typeNoThe type of client application (currently supported: 'cursor', 'claude', 'windsurf', 'claude-code', 'codex'). Mutually exclusive with config_file_path.
config_file_pathNoAbsolute path or path starting with '~' to the config file. Mutually exclusive with client_type.
server_idYesThe unique MCP server identifier (config key name) of the server configuration entry to remove.
claude_pathNoFull path to claude executable (only used for claude-code client_type when claude command is not in PATH).

TDQS

A3.9/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It clearly indicates this is a destructive operation ('Removes'), which is essential. However, it doesn't disclose important behavioral traits like whether the removal is permanent/reversible, what permissions are required, whether it affects running instances, or what happens if the specified server_id doesn't exist. The description provides basic operational context but lacks comprehensive behavioral details.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is efficiently structured in two sentences: the first states the core purpose, the second provides crucial parameter guidance. Every word earns its place, with no redundancy or unnecessary elaboration. The information is front-loaded with the primary action immediately clear.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a destructive operation tool with 4 parameters, no annotations, and no output schema, the description provides adequate but incomplete coverage. It clearly states the destructive nature and parameter relationships, but lacks information about what happens after removal (success/failure indicators), error conditions, or system impacts. The description covers the basics but leaves important contextual gaps for a mutation tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 100% schema description coverage, the baseline is 3 even without parameter details in the description. The description adds some value by clarifying the exclusive relationship between client_type and config_file_path ('Provide EITHER... OR...') and providing context about client applications, but doesn't significantly enhance understanding beyond what the comprehensive schema descriptions already provide for all 4 parameters.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Removes') and resource ('configuration for a specific MCP server/tool from the client application'), distinguishing it from sibling tools like add_mcp_server_config (adds), get_mcp_server_details (reads), search_mcp_servers (searches), and stream_mcp_events (streams). The description explicitly identifies what gets removed (server configuration) and from where (client applications).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides clear context about when to use this tool (to remove a specific MCP server configuration) and specifies the exclusive parameter options (client_type OR config_file_path). However, it doesn't explicitly state when NOT to use it or mention alternatives like modifying instead of removing, or which sibling tools might be complementary (e.g., using get_mcp_server_details first to verify what to remove).

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_mcp_serversA

This is the primary tool for discovering and accessing new tools, methods, features, or capabilities. If a user asks for a tool, method, feature, or capability that you do not currently have, you MUST use this tool to search for it in the MCP Finder registry. For example, if a user asks for a browser tool, OCR, filesystem access, PDF parsing, or any other capability not present in your current toolset, use this tool to search by relevant keywords. This is the required first step to expand your available tools.

ParametersJSON Schema
NameRequiredDescriptionDefault
queryNoKeywords to search for in tool name or description.
tagNoSpecific tag to filter by.

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. It effectively communicates that this is a discovery/search operation (not a mutation), establishes it as a mandatory first step for capability expansion, and provides practical examples of use cases. However, it doesn't mention potential limitations like rate limits, authentication requirements, or what happens when no results are found.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is efficiently structured with three sentences that each serve distinct purposes: stating the primary function, providing mandatory usage rules with examples, and reinforcing it as the required first step. There's no wasted text, and the most critical information (the MUST directive) is front-loaded in the second sentence.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a search tool with 2 parameters, 100% schema coverage, and no output schema, the description provides strong contextual completeness. It clearly explains the tool's role in the MCP ecosystem, when to use it, and provides concrete examples. The main gap is the lack of output information (what format results come in, pagination, etc.), but given this is a discovery tool, the description adequately covers its core purpose and usage.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents both parameters (query for keywords, tag for filtering). The description doesn't add specific parameter semantics beyond what's in the schema, though it implies the 'query' parameter should contain relevant keywords for capabilities being sought. This meets the baseline expectation when schema coverage is complete.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'discovering and accessing new tools, methods, features, or capabilities' through the MCP Finder registry. It specifies the verb 'search' and resource 'MCP servers', distinguishing it from sibling tools like add/remove/config operations. The description explicitly positions this as the primary discovery tool.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit usage guidelines: 'If a user asks for a tool, method, feature, or capability that you do not currently have, you MUST use this tool... This is the required first step to expand your available tools.' It gives concrete examples (browser tool, OCR, filesystem access) and distinguishes when to use this tool versus alternatives (when capabilities are missing from current toolset).

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

stream_mcp_eventsB

Monitor real-time events from the MCPfinder registry including new tool registrations, updates, and status changes. Returns a summary of events received during the monitoring period.

ParametersJSON Schema
NameRequiredDescriptionDefault
durationNoDuration in seconds to stream events (default: 30, max: 120).
filterNoEvent types to filter: tool.registered, tool.updated, tool.status_changed.
sinceNoISO timestamp to get events from (default: 1 hour ago).

TDQS

B3.1/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions monitoring and returning a summary, but lacks critical details: it doesn't specify if this is a blocking call, how events are delivered (e.g., streaming vs. batch), authentication requirements, rate limits, or error handling. For a real-time monitoring tool with zero annotation coverage, this is a significant gap in behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is appropriately sized with two clear sentences: one for the monitoring action and one for the return value. It's front-loaded with the core purpose and avoids unnecessary details. However, the second sentence could be slightly more specific about the summary format to enhance clarity without adding bulk.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of real-time event monitoring, no annotations, and no output schema, the description is incomplete. It doesn't explain the return format (e.g., structure of the summary), how events are aggregated, or potential side effects (e.g., resource consumption during streaming). For a tool with behavioral implications and no structured output documentation, more context is needed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already fully documents all three parameters (duration, filter, since) with their types, defaults, and constraints. The description adds no parameter-specific information beyond what's in the schema, but doesn't need to compensate for gaps. Baseline 3 is appropriate when the schema handles all parameter documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('monitor', 'returns') and resources ('real-time events from the MCPfinder registry'), explicitly listing event types ('new tool registrations, updates, and status changes'). It distinguishes itself from sibling tools (which are about server configuration management) by focusing on event monitoring rather than server operations.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. While it implies real-time monitoring, it doesn't specify prerequisites (e.g., whether the registry must be active) or compare it to other event-related tools (none are listed among siblings). There's no mention of when not to use it or what scenarios it's best suited for.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 5 tool updates
    • First observedadd_mcp_server_config
    • First observedget_mcp_server_details
    • First observedremove_mcp_server_config
    • First observedsearch_mcp_servers
    • First observedstream_mcp_events

TDQS

A4/5.0

Scored across 5 tools

Disambiguation5/5

Each tool has a distinct purpose with clear boundaries: search discovers servers, get retrieves details, add/remove manage configurations, and stream monitors events. There is no overlap in functionality that would cause agent confusion.

Naming Consistency5/5

All tools follow a consistent verb_noun pattern with snake_case (e.g., search_mcp_servers, add_mcp_server_config). The naming is predictable and follows the same convention throughout the set.

Tool Count5/5

With 5 tools, this is well-scoped for an MCP server discovery and management system. Each tool serves a specific role in the workflow, and there are no extraneous or missing tools for the domain.

Completeness5/5

The toolset provides complete coverage for the MCP server management domain: discovery (search), inspection (get), configuration management (add/remove), and monitoring (stream). This covers the full lifecycle from finding to installing and maintaining MCP servers.

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