Vouch — independently measured reliability scores for MCP tools, not self-reported claims.
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Get an MCP tool's independently measured trust score before relying on it: real invocation trials, not self-reported metadata. Call this before adding a new MCP server to a project, or when deciding between two tools that do similar things. Look up by tool name, package, or server — free text.
A tool name, 'server tool', or package name — free text.
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Get an MCP tool's independently measured trust score before relying on it: real invocation trials, not self-reported metadata. Call this before adding a new MCP server to a project, or when deciding between two tools that do similar things. Look up by tool name, package, or server — free text.
| Argument | Type | Description |
|---|---|---|
| tool* | string | A tool name, 'server tool', or package name — free text. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"tool"
],
"properties": {
"tool": {
"type": "string",
"description": "A tool name, 'server tool', or package name — free text."
}
}
}Compare 2-5 MCP tools' measured behaviour side by side before picking one. Call this when weighing alternatives for the same task. Never collapses the comparison into a single ranked number — each tool keeps its own score and tier, and a caveat is surfaced when compared tools weren't measured at the same tier.
| Argument | Type | Description |
|---|---|---|
| tools* | array | Tool names, packages, or servers — free text, one per tool. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"tools"
],
"properties": {
"tools": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 5,
"minItems": 2,
"description": "Tool names, packages, or servers — free text, one per tool."
}
}
}Search Vouch's independently measured corpus of MCP tools by free-text query. Call this when choosing an MCP tool for a task and you want options ranked by measured reliability rather than popularity — optionally filtered by measurement tier (deep = full behavioural battery, shallow = schema + sample-call only).
| Argument | Type | Description |
|---|---|---|
| tier | string | Restrict to tools measured at this tier. |
| limit | integer | |
| query* | string | Free-text search — matches tool name, description, or server name. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"query"
],
"properties": {
"tier": {
"enum": [
"shallow",
"deep"
],
"type": "string",
"description": "Restrict to tools measured at this tier."
},
"limit": {
"type": "integer",
"maximum": 50,
"minimum": 1
},
"query": {
"type": "string",
"description": "Free-text search — matches tool name, description, or server name."
}
}
}