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JSON validity
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/json-ok/mcp · website · measurements and detailsJSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.
MCP endpoint :https://json-validator.api.klymax402.com/mcp · website · measurements and detailsValidates JSON against a JSON Schema, lists violations. x402 payment required (testnet USDC).
MCP endpoint :https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp · measurements and detailsCheck whether text is valid JSON. The body is discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/json-check/mcp · website · measurements and detailsRegex matching, email/URL format validation, and JSON Schema validation.
MCP endpoint :https://apished.com/mcp/v1/validate · website · measurements and detailsMCP server (stdio): validate JSON against JSON Schema (draft-07 / 2020-12) via the AgentForge API
MCP endpoint :https://apim-agentforge-6lfm33.azure-api.net/schema-validate/mcp · measurements and detailsValidate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings.
MCP endpoint :https://payload-validator.gumballtools.com/api/mcp · website · measurements and detailsDeterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.
MCP endpoint :https://api.machinegrade.dev/mcp · website · measurements and detailsAudit public webpages and supplied markup for HTML, CSS, SEO, JSON-LD, and link issues.
MCP endpoint :https://web-validator-mcp.digestseo.com/mcp · website · measurements and detailsJSON contract registry and validator for structured LLM and agent outputs.
Package npm :json-contracts · website · measurements and detailsBulk phone validation for an Apify dataset, CSV/Excel/JSON file or Google Sheet
MCP endpoint :https://mcp.apify.com/?tools=nerolabs/phone-number-validator · website · measurements and detailsDeterministic inspect, safe repair, and JSON Schema validation for agent JSON. No LLM.
Package pypi :agent-json-reliability · website · measurements and detailsJSON/YAML/CSV validate, diff, transform for AI agents
Package npm :@rog0x/mcp-json-tools · website · measurements and detailsJSON Schema validation MCP.
MCP endpoint :https://gateway.pipeworx.io/jsonschema/mcp · website · measurements and detailsJSON processing — format, validate, diff, convert, minify, query, analyze
Package npm :json-forge-mcp · website · measurements and detailsValidate JSON against a schema with Ajv, infer a schema from samples and diff two schemas.
Package oci :ghcr.io/basitalisandhu/mcp-json-schema-tools:0.1.1 · website · measurements and detailsAI-powered validator ai MCP server for agents. Supports validate json, validate email, validate
Package pypi :validator-ai-mcp · website · measurements and detailsMCP server for JSON processing — format, validate, diff, convert, minify, query, analyze
Package npm :json-forge-mcp · website · measurements and detailsValidate, format, and inspect JSON locally. No network and no key.
Package npm :json-tools-mcp · website · measurements and detailsDeveloper utility MCP: screenshots, PDFs, OG, QR, link preview, JSON validate, ShipPack.
MCP endpoint :https://useforgekit.dev/mcp · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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