"Tools for generating charts based on data" matching MCP connectors:

Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.

Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev

Discover, pay for, execute, and publish APIs through Apiosk.

Point Gecko at an OpenAPI spec; get first-call-correct, auth-hidden agent tools.

Point Claude Code, Qwen Code, Cursor, or any MCP client at https://docs.jmeter.ai/api/mcp and your agent answers JMeter questions grounded in this documentation, with a source link for every answer. Free, no API key, no signup.

Your DRF API as MCP tools — 1,800 endpoints become 16 dispatchers, permissioned by Django.

Apideck Unified API MCP — 330 tools across 200+ SaaS connectors (accounting, CRM, HRIS, ATS).

ship-on-friday MCP — wraps StupidAPIs (requires X-API-Key)

Anonymous webhook capture, inspection, waiting, and response configuration for AI agents.

Create hosted mock REST APIs as tools: seed fake data, import specs, query, write, snapshot. Free.

Instant no-signup webhook & HTTP-request inspector for testing webhooks and agent tool-callbacks.

Verify x402 endpoints before payment or publish service profiles for agent discovery.

Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.

Debug webhooks from your AI agent: inspect and replay captured webhooks on localhost.

API governance for AI agents. Detects breaking changes, scores blast radius, blocks unsafe calls.

Unified gateway exposing 150+ tools across all NexGenData MCP servers via one endpoint.

DummyJSON mock REST: products, users, posts, recipes, todos. Keyless test data.

Remote MCP for 1,500+ APIs. Vault-managed credentials; OAuth or API key. Search, load, and execute.

The official MCP Server for the Mux API

An MCP server that provides tools to validate an email address using Dilli Email Validation API.