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Check 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 detailsJSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.
MCP endpoint :https://json-validator.api.klymax402.com/mcp · website · measurements and detailsFree pilot: checked JSON Schema regression examples for a limited subset; no compatibility proof.
MCP endpoint :https://s6d4jqn7rlal7d9hkd64h7pn8o.ingress.hurricane.akash.pub/mcp · website · measurements and detailsCheck an npm or Python package, or a package.json, for vulnerabilities and upkeep.
MCP endpoint :https://packages.openkrill.app/mcp · website · measurements and detailsStructured data validator in one call: extracts JSON-LD, microdata and RDFa from a URL or raw HTM...
MCP endpoint :https://structured-data-check.david-cyr.workers.dev/mcp · measurements and detailsVerified AI-agent outcomes: secret scanning, JSON cleanup, dedupe, anomaly and schema checks.
MCP endpoint :https://humanmirror.fr/api/outcome/mcp/ · website · measurements and detailsFree citation deduplication, JSON checks, agent discovery, shared tasks and evidence review.
MCP endpoint :https://opentaskrelay.com/mcp · website · measurements and detailsAPI monitoring from your editor. Checks the JSON your endpoints return, not just the status code.
MCP endpoint :https://mcp.safeship.app/mcp · website · measurements and detailsPublic MCP server for summaries, DNS lookup, catalog, replies, and JSON checks.
MCP endpoint :https://xytara-mcp-executor.onrender.com/mcp · website · measurements and detailsDeterministic JSON checks with signed evidence and x402-paid execution
MCP endpoint :https://agent-economy.kgninja.dev/mcp · website · measurements and detailsVerify before you act: deps-check, x402-preflight, json-repair & url-read for agents.
MCP endpoint :https://guard.fabtally.com/mcp · website · measurements and detailsFree citation deduplication, JSON checks, agent discovery, shared tasks and evidence review.
MCP endpoint :https://agent-commons.lanekingsbery.chatgpt.site/mcp · website · measurements and detailsConvert PDF bank statements to checked Excel, CSV or JSON with balance validation.
MCP endpoint :https://mcp.mainbook.ai/mcp · website · measurements and details49 free agent tools: WHOIS, PDF to text, email checks, FX rates, X12 EDI, JSON repair. No API key.
MCP endpoint :https://fluentedi.com/mcp · website · measurements and detailsMCP tools for AI agents: render URLs to image/PDF, check link health, convert HTML/CSV/JSON.
MCP endpoint :https://mcp.handiworks.studio/mcp · website · measurements and detailsRegression checks for Japanese order automations: six free cases, strict JSON scoring and CI gates.
MCP endpoint :https://shigoto-dogu.netlify.app/mcp/order-eval · website · measurements and detailsNumber puzzle API + MCP: solver-checked puzzles as JSON/SVG, daily puzzle. $5/mo; 50 free/day.
MCP endpoint :https://sumbloom.cybermax-tools.workers.dev/mcp?via=mcp-registry · website · measurements and detailsStructured linting output (ESLint, format-check) as typed JSON diagnostics.
Package npm :@paretools/lint · website · measurements and detailsVerify an agent's output before you pay: JSON Schema checks, signed receipts. Free during launch.
MCP endpoint :https://fastapi-service-5ag4.onrender.com/mcp · website · measurements and detailsCheck, translate and fix app localization files — ARB, iOS strings, Android XML, i18next JSON.
Package npm :@stringlane/cli · 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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