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MCP servers tagged json-schema
117 live MCP servers tagged "json-schema", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with json-schema.
Md Business
Business documents as Markdown — invoices, design docs and test sheets validated by JSON Schema, rendered to A4 PDF, and editable by AI agents through a built-in MCP server. Tauri…
Webmcp Extension
DevTools for the agentic web — detect, inspect, and test WebMCP tools in Chrome
Schemafit
Provider-aware structured-output / JSON-Schema CI linter: fail CI before your schema 400s on OpenAI, Anthropic, or Gemini.
MASA
MASA — A local-first, language-neutral protocol for describing, listening to, granulating, dissecting, and exchanging sound as matter, with engine-neutral processing and agentic t…
Ryntra Solana Evidence
Read-only Solana evidence kit: Token-2022 asset passports, transfer preflight against a declared owner policy, and offline receipt verification. SDK, MCP server, JSON Schemas and…
Codex Toolloop
Build agentic coding workflows with OpenAI Codex ToolLoop: Based on the Codex app-server and Vercel AI SDK v6, codex exec automation, JSONL events, structured outputs, dynamic too…
Employee Md
📋 Open standard for AI agent employment contracts — YAML spec, JSON Schema, Python CLI validator, runtime SDK
AI Agent Project Template
A portable template for AI coding projects: canonical AGENTS.md instructions, shared project memory, validated context, bounded worker reports and dependency-free tooling.
Clas
Schemas, receipts, and examples for interoperable machine actions.
Schemasure
SchemaSure — independent third-party profile of a public API surface, by API Evangelist. Structured data extraction API that converts unstructured text or HTML into JSON guarantee…
Core
Portable, js-compilable tools: schema validation, workflow routing, sqlite-querybuilder and soon others
MCP
Open-source portable profile API server with a mobile-first profile page.
Github MCP Sketch
MCP proxy in front of the GitHub MCP that returns JSON schemas instead of raw responses. Built on json-schema-sketch.
Json Schema Validator MCP
Vinkius Edge high-performance Model Context Protocol (MCP) server for robust JSON Schema validation.
Forgewisp Core
Forgewisp — safe, function-calling AI agents for the browser. Register your own functions as validated tools, with risk-tier execution, OpenAI-compatible streaming, dual reasoning…
Toolschema
Canonical Python layer for AI agent tools - function to JSON Schema, once, everywhere. OpenAI, Anthropic, MCP, LangChain, FastMCP.
Fde Guide
A field guide for FDEs and applied AI teams: value engineering and production architecture.
Pascal MCP SDK
FreePascal-native MCP (Model Context Protocol) server library — expose tools, resources, and prompts from Pascal programs to AI agents. Zero third-party dependencies, stdio + Stre…
Tool Card Spec
MCP Tool Cards v0.1 draft. Per-tool disclosure documents for Model Context Protocol servers: input/output schema, side-effect classification, tested-LLM matrix, latency, cost, aud…
Ironmcp
A mistyped MCP argument should not get a confident answer to the wrong question. ironmcp is a hardening-and-conformance standard for MCP servers: a tool refuses undeclared argumen…
Obsidian Markdown Lint MCP Server
Stdio MCP server for Claude Code that lints Markdown, validates front matter against JSON Schema, and renders Mermaid diagrams to SVG, all inside Docker.
Asm Spec
The selection layer for agents: which tool an agent can use, should use, and pays — between discovery (MCP/ARD) and settlement (x402/AP2)
Ribosome Schema
The ribosome standard: normative JSON Schemas for ribosome.json/ribosome.lock.json, generated types, validation, and a conformance corpus.
QZX Quick Zap Exchange
QZX by Alejandro Sánchez: cross-platform commands and structured JSON for AI agents; reference implementation of QZX Result Contract v1 with MCP 2025-06-18 to 2026-07-28 interoper…
Open Agent Context
Open Agent Context Standard: portable, governed memory and context for AI agents. Python reference implementation with CLI, SQLite, evidence, audit, and MCP adapters.
Schema Census
Point mcp-schema-check at your MCP server and see which provider strict modes reject your tool schemas, and why. Backed by 617 servers / 14,804 real schemas.
Normandy
Build production-ready AI agents in Elixir — structured schemas, tool calling, multi-agent coordination, streaming, and distributed sessions, with first-class Anthropic Claude sup…
Capibara
Open semantic language and registry for describing capabilities (YAML grammar + catalogs)
Revisium Core
Backend API for Revisium — GraphQL, REST, MCP, CQRS
LLM Abi
One schema. Every model. A schema compatibility compiler for LLM providers.
To Openai Tool Schema Lab
Convert and validate MCP tool schemas for OpenAI-style function calling experiments.
Cm MCP Contracts
Governed registry for the code-mode MCP platform: add an API capability by submitting one declarative JSON tool contract - no server code. CI gates each contract, publishes it to…
Tool Schema
Convert any JSON Schema into a valid tool / function calling schema for OpenAI, Anthropic, Gemini and MCP. Zero dependencies.
Agent Weather
Forecasts for the agent economy. Pay-per-call JSON "weather" for the AI-agent ecosystem (framework activity, provider outages, MCP Registry, XRPL health). AI agents buy it via x40…
Grpc MCP Bridge Kotlin
Expose gRPC services as Model Context Protocol (MCP) tools on the JVM — embedded Netty, no sidecar.
Noyalib
A YAML 1.2 parser and serialiser for Rust: zero unsafe, full serde integration, lossless CST editing, JSON Schema validation, 406/406 on the official test suite. Core of a six-cra…
Arango Mind
Schema-driven ArangoDB MCP server with OpenAPI search/exec, AQL templates, and knowledge-atlas projections.
Schema Generator
Annotation-driven Model Context Protocol (MCP) server code generator. Eliminates boilerplate by automatically generating schemas
Standard Tool
One type for an LLM tool — define it once, use it with any provider, SDK, or framework. Built on Standard Schema. RFC.
Tool Forge
A linter for MCP / agent tool schemas — reads a tool definition the way an LLM does, flags ambiguity and missing types, scores clarity, and previews the agent tool-call. Data cont…
Mealmind
MealMind - gerenciador de dieta / plano alimentar gratis e open source (PWA, sem backend). A dieta e um JSON que uma IA gera e o usuario importa em 2 toques. Inclui servidor MCP p…
Spatial Asset Profile
MCP Spatial Asset Profile v2: interoperable 3D/spatial asset metadata, schemas, examples, and minimal Python/TypeScript SDKs
Mcpschema
Validate MCP (Model Context Protocol) tool JSON Schema definitions — catch missing fields, invalid types, and silent failures before your AI agent calls them.
Webmcp Schemas
A community registry of canonical WebMCP tool schemas, plus a runtime and linter.
Tool Lint
CLI linter for AI tool definitions — validates MCP, OpenAI, and Anthropic schemas
Valj
JSON Schema validation toolkit
Mcpds
MCP Design Specification (MCPDS)
AI Provenance Protocol
The AI Provenance Protocol (APP) is an open standard for verifying AI-generated content. It provides a machine-readable format to track model identity, inputs, and human review. D…
Tool Schema Fixer
CLI for normalizing generic tool schemas into OpenAI, Anthropic, and Gemini-friendly shapes.
DeliverCheck
SharedOS-native verified JSON repair for agent-to-agent workflows.