#validation

Hosted MCP email validation utility for checking email format and validation workflows through a remote MCP server.

A test repository for MCP server functionality

Serveur MCP (Master Control Program) pour n8n qui fournit des outils de validation de workflows et de bonnes pratiques pour vos projets d'automatisation

A lightweight Model Context Protocol (MCP) server that enables your LLM to validate email addresses. This tool checks email format, domain validity, and deliverability using the AbstractAPI Email Validation API. Perfect for integrating email validation into AI applications like Claude Desktop.

zerobounce-mcp-server

Test repository for GitHub MCP server validation

Mirror of

Analyzes user-described build features (e.g. database, API integration, tools) and extracts core server requirements like resources, tools, prompts, external systems, and transports needed for MCP.

Official MCP server for IdeaBob.com — AI-powered idea scoring, 9-dimension Opportunity Score, technical moat analysis, pressure testing, and competitor research for AI/LLM/startup ideas. ### Connection Details - **URL**: `https://umxgvoxlxznnpdvkgnaj.supabase.co/functions/v1/mcp` - **Type**: Remote HTTP / Supabase Edge Function - **Auth**: Bearer token (users generate their own token on ideabob.com) ### Features / Tools - `score_idea` - `pressure_test` - `validate_market_fit` - `generate_competitor_analysis` - etc. ### Website https://ideabob.com ### Additional Info Free tier available. Users must sign up at ideabob.com to get their personal token.

This project provides an MCP-compatible interface for the JSONBuddy Core API, enabling JSON validation against schemas via a secure HTTP-based service. The server exposes two endpoints (`/validator/validate` and `/validator/validate-simple`) for flexible schema validation scenarios. MCP clients and AI agents can integrate this API using the included `mcp.json` definition and standard API key authentication.

AI-powered startup idea validation by a specialized 9-agent crew. Get market research, competitive analysis, and go/no-go signals for your startup idea. Services from $49 to $799 with 25% affiliate commissions for referring agents.

Python MCP Server abstracting the official mermaid-cli for ease of use

PhysBound is a specialized "Physics Linter" for AI that deterministically validates RF and thermodynamic claims against hard physical limits, preventing hallucinations in engineering workflows.

High-performance XML file comparison with semantic analysis capabilities. Features StAX streaming parser for memory-efficient processing of large XML files (60MB+ tested), order-agnostic semantic comparison, and multiple output formats (text, JSON, Excel). Includes 5 MCP tools for comprehensive XML analysis and comparison.

Validate German and European e-invoices (ZUGFeRD, Factur-X, XRechnung) against EN 16931. Returns structured JSON with errors, warnings and concrete fix suggestions. Free API key available at zugferd-validator.de.

5 APIs behind one MCP server: task deduplication (DedupQ), cost prediction (BurnRate), output validation (QualityGate), behavioral governance (GuardRail), shared failure intelligence (PitfallDB). No signup needed. 1,000 free credits/month.

Make your AI agents cheaper, faster, and more reliable. 5 products, 14 MCP tools, 1 API key. Task deduplication, cost prediction, output validation, behavioral governance, and shared failure intelligence. Anonymous demo mode — try all tools without a key. 1,000 free credits/month, no card required. https://plith.ai/.well-known/mcp/server-card.json

Validate and parse CUSIP and ISIN security identifiers using official checksum algorithms. Pure computation, no external dependencies. Used by trading platforms, portfolio tools, and fintech.

Validate emails from your AI coding assistant. Syntax checks, MX verification, disposable detection, developer pattern intelligence, and typo suggestions. 1,000 free validations/month.

Validate startup ideas before your build agent scaffolds code. One MCP tool, validate_idea, returns a 10-dimension Venture Readiness Score (0–100, computed deterministically in code), an evidence brief tagged by source (observed / inferred / missing / AI / user-claim), a kill / pivot / test / build verdict, and live signal from Reddit, GitHub, Hacker News, Stack Overflow, and dev.to. Calibrates to the user's declared founder skill graph and assigns 1–3 archetypes with structural cautions. Designed to sit BEFORE code-scaffolding in a build-agent flow.

Deterministic cross-branch conflict detection for AI coding agents. Scans your git repo for function signature mismatches, HTTP route conflicts, and schema breaks across branches using tree-sitter AST analysis. Catches the merge failures that CI misses because tests only run on one branch at a time.

SchemaCheck Agent validates JSON payloads against JSON Schema Draft 7 and 2020-12 standards. Designed for agent-to-agent workflows, it returns structured validation results instantly — including field-level error paths, human-readable summaries, and optionally a corrected payload when repair mode is enabled. Built on the x402 micropayment protocol, each validation call costs $0.005 USDC on Base mainnet — no subscriptions, no API keys, no accounts. Pay per call, settle on-chain.

Validate startup ideas with behavioral evidence — not opinion. Demand Discovery AI™ is a sales-agent MCP that answers founders' questions about the validation framework, the four data-signal categories (Search & attention, Conversation & pain, Adoption & spend, Capital & hiring), the Demand Score™, and the Build/Pivot/Kill verdict™. Includes 7 tools: ask a free-form question, get the validation framework, get product details, explain demand signals, compare validation approaches, get data-source categories, and start a free Market Research report (deep-links the user's idea into demanddiscovery.ai for the kickoff). Stateless. No auth. No API key required.

MCP server for YAML: validate & lint, convert between 10 formats, visualize as diagrams, and create/edit your saved diagrams — from your AI editor.

MailboxValidator MCP server validates email addresses using MailboxValidator API to ensure your mailing list is clean and to reduce email bounces during marketing campaigns. With a free MailboxValidator API key, users can query up to 300 emails per month. If more queries are required, users can opt for a paid API plan instead. https://www.mailboxvalidator.com/plans#api