MCP Tool Schema Validator
Pricing
from $4.90 / 1,000 tool or record validateds
Go to Apify Store
MCP Tool Schema Validator
Validate MCP tool schemas and manifests for agent-readiness, input/output clarity, and common schema mistakes.
MCP Tool Schema Validator
Pricing
from $4.90 / 1,000 tool or record validateds
Validate MCP tool schemas and manifests for agent-readiness, input/output clarity, and common schema mistakes.
You can access the MCP Tool Schema Validator programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in Integrations settings in Apify Console.
{ "openapi": "3.0.1", "info": { "version": "1.0", "x-build-id": "aoxFpQjHeWuCUI7Ua" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/junipr~mcp-tool-schema-validator/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-junipr-mcp-tool-schema-validator", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/junipr~mcp-tool-schema-validator/runs": { "post": { "operationId": "runs-sync-junipr-mcp-tool-schema-validator", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/junipr~mcp-tool-schema-validator/run-sync": { "post": { "operationId": "run-sync-junipr-mcp-tool-schema-validator", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "properties": { "sourceId": { "title": "Source Id", "type": "string", "description": "Source Id input value.", "default": "mcp-tools-specification-example" }, "sourceUrl": { "title": "Source Url", "type": "string", "description": "Source Url input value.", "default": "https://modelcontextprotocol.io/specification/2025-06-18/server/tools" }, "text": { "title": "Text", "type": "string", "description": "Text input value.", "default": "" }, "html": { "title": "Html", "type": "string", "description": "Html input value." }, "currentText": { "title": "Current Text", "type": "string", "description": "Current Text input value.", "default": "" }, "previousText": { "title": "Previous Text", "type": "string", "description": "Previous Text input value.", "default": "" }, "items": { "title": "Items", "type": "array", "description": "Items input value.", "items": { "type": "object", "additionalProperties": false, "properties": { "toolId": { "type": "string", "title": "Tool Id", "description": "Tool Id input value." }, "id": { "type": "string", "title": "Id", "description": "Id input value." }, "name": { "type": "string", "title": "Name", "description": "Name input value." }, "toolName": { "type": "string", "title": "Tool Name", "description": "Tool Name input value." }, "description": { "type": "string", "title": "Description", "description": "Description input value." }, "inputSchema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." }, "input_schema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." } } }, "default": [ { "toolId": "get-weather", "name": "get_weather", "inputSchema": { "type": "object", "properties": { "location": { "type": "string", "description": "City name or zip code", "title": "Location" } }, "required": [ "location" ], "additionalProperties": false } } ] }, "previousItems": { "title": "Previous Items", "type": "array", "description": "Previous Items input value.", "items": { "type": "object", "additionalProperties": false, "properties": { "toolId": { "type": "string", "title": "Tool Id", "description": "Tool Id input value." }, "id": { "type": "string", "title": "Id", "description": "Id input value." }, "name": { "type": "string", "title": "Name", "description": "Name input value." }, "toolName": { "type": "string", "title": "Tool Name", "description": "Tool Name input value." }, "description": { "type": "string", "title": "Description", "description": "Description input value." }, "inputSchema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." }, "input_schema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." } } } }, "topics": { "title": "Topics", "maxItems": 50, "type": "array", "description": "Topics input value.", "items": { "type": "string" } }, "expectedOptions": { "title": "Expected Options", "maxItems": 20, "type": "array", "description": "Expected Options input value.", "items": { "type": "string" } }, "targets": { "title": "Targets", "maxItems": 50, "type": "array", "description": "Targets input value.", "items": { "type": "object", "additionalProperties": false, "properties": { "sourceId": { "type": "string", "title": "Source Id", "description": "Source Id input value." }, "sourceUrl": { "type": "string", "title": "Source Url", "description": "Source Url input value." }, "text": { "type": "string", "title": "Text", "description": "Text input value." }, "html": { "type": "string", "title": "Html", "description": "Html input value." }, "currentText": { "type": "string", "title": "Current Text", "description": "Current Text input value." }, "previousText": { "type": "string", "title": "Previous Text", "description": "Previous Text input value." }, "items": { "type": "array", "items": { "type": "object", "additionalProperties": false, "properties": { "toolId": { "type": "string", "title": "Tool Id", "description": "Tool Id input value." }, "id": { "type": "string", "title": "Id", "description": "Id input value." }, "name": { "type": "string", "title": "Name", "description": "Name input value." }, "toolName": { "type": "string", "title": "Tool Name", "description": "Tool Name input value." }, "description": { "type": "string", "title": "Description", "description": "Description input value." }, "inputSchema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." }, "input_schema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." } } }, "title": "Items", "description": "Items input value." }, "previousItems": { "type": "array", "items": { "type": "object", "additionalProperties": false, "properties": { "toolId": { "type": "string", "title": "Tool Id", "description": "Tool Id input value." }, "id": { "type": "string", "title": "Id", "description": "Id input value." }, "name": { "type": "string", "title": "Name", "description": "Name input value." }, "toolName": { "type": "string", "title": "Tool Name", "description": "Tool Name input value." }, "description": { "type": "string", "title": "Description", "description": "Description input value." }, "inputSchema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." }, "input_schema": { "type": "object", "title": "Input Schema", "description": "Input Schema input value." } } }, "title": "Previous Items", "description": "Previous Items input value." }, "topics": { "type": "array", "items": { "type": "string" }, "maxItems": 50, "title": "Topics", "description": "Topics input value." }, "expectedOptions": { "type": "array", "items": { "type": "string" }, "maxItems": 20, "title": "Expected Options", "description": "Expected Options input value." } } } }, "urls": { "title": "Urls", "maxItems": 50, "type": "array", "description": "Urls input value.", "items": { "type": "string" } }, "maxItems": { "title": "Max Items", "minimum": 1, "maximum": 50, "type": "integer", "description": "Max Items input value.", "default": 1 }, "maxRecordsPerTarget": { "title": "Max Records Per Target", "minimum": 1, "maximum": 500, "type": "integer", "description": "Max Records Per Target input value.", "default": 5 }, "maxTextBytes": { "title": "Max Text Bytes", "minimum": 1000, "maximum": 1000000, "type": "integer", "description": "Max Text Bytes input value.", "default": 250000 }, "fetchTimeoutMs": { "title": "Fetch Timeout Ms", "minimum": 1000, "maximum": 30000, "type": "integer", "description": "Fetch Timeout Ms input value.", "default": 15000 }, "allowUrlFetch": { "title": "Allow Url Fetch", "type": "boolean", "description": "Allow Url Fetch input value.", "default": false }, "includeDigest": { "title": "Include Digest", "type": "boolean", "description": "Include Digest input value.", "default": false }, "includeReport": { "title": "Include Report", "type": "boolean", "description": "Include Report input value.", "default": true }, "dryRun": { "title": "Dry Run", "type": "boolean", "description": "Dry Run input value.", "default": false }, "debug": { "title": "Debug", "type": "boolean", "description": "Debug input value.", "default": false } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } }}OpenAPI is a standard for designing and describing RESTful APIs, allowing developers to define API structure, endpoints, and data formats in a machine-readable way. 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