Which integrations are available for this server?

Provides drop-in BaseTools for CrewAI, allowing agents to utilize a marketplace of verified capabilities including web extraction, validation, and financial data lookups. Integrates with LangChain via the StraleToolkit, offering over 200 verified tools for company lookups, compliance checks, and financial data analysis. Features a utility to convert web URLs directly to Markdown, facilitating easy content extraction and processing for agents. Provides a Semantic Kernel plugin for .NET agents to access a marketplace of 200+ verified and quality-scored capabilities.

Strale

Trust and quality infrastructure for AI agents.

npm npm PyPI License: MIT strale.dev

What is Strale

Strale is a capability marketplace for AI agents. Agents call strale.do() at runtime to access 250+ verified capabilities — company lookups, compliance checks, financial data, web extraction, and more — without hardcoding integrations or managing credentials.

Every capability is continuously tested and assigned a Strale Quality Score (SQS): a 0–100 confidence score derived from two independent profiles — a Quality Profile (code correctness, schema compliance, error handling, edge cases) and a Reliability Profile (current availability, rolling success, upstream health, latency) — combined via a published matrix. Agents get reliable, scored tools. You get observability into what your agent is actually doing.

Quick Start: MCP Server

Add to your Claude Desktop or Cursor config:

{
  "mcpServers": {
    "strale": {
      "command": "npx",
      "args": ["-y", "strale-mcp"],
      "env": {
        "STRALE_API_KEY": "your_api_key"
      }
    }
  }
}

Five capabilities (email-validate, dns-lookup, json-repair, url-to-markdown, iban-validate) are available without an API key. Get a key and €2 free credits at strale.dev.

Quick Start: TypeScript SDK

npm install straleio

import Strale from "straleio";

const strale = new Strale({ apiKey: process.env.STRALE_API_KEY });

const result = await strale.do("eu-vat-validate", { vat_number: "SE556000000001" });
console.log(result);

Quick Start: Python SDK

pip install straleio

from straleio import Strale

strale = Strale(api_key="your_api_key")
result = strale.do("eu-vat-validate", {"vat_number": "SE556000000001"})

Packages

Package	Registry	Description
`strale-mcp`	npm	MCP server — Claude Desktop, Cursor, any MCP host
`straleio`	npm	TypeScript/JavaScript SDK
`straleio`	PyPI	Python SDK
`langchain-strale`	PyPI	LangChain toolkit — 250+ tools via `StraleToolkit`
`crewai-strale`	PyPI	CrewAI integration — drop-in BaseTools for agents
`strale-semantic-kernel`	npm	Semantic Kernel plugin for .NET and TypeScript agents

Quality Scoring (SQS)

Every capability has a Strale Quality Score (SQS) from 0 to 100. The score is derived from two independent profiles combined via a published 5×5 matrix: a Quality Profile (code correctness, schema compliance, error handling, edge cases) and a Reliability Profile (current availability, rolling success, upstream health, latency). Weights vary by capability type (deterministic, stable API, scraping, AI-assisted).

Scores are public. Check any capability:

GET https://api.strale.io/v1/quality/eu-vat-validate

Agents can set a min_sqs threshold on any POST /v1/do call — requests are rejected if the capability's current score falls below the threshold.

Links

strale.dev — Homepage and sign-up
strale.dev/docs — API reference
strale.dev/pricing — Pricing
strale.dev/quality — Quality methodology
💡 Examples — copy-paste examples for every integration

Agent Skills & Code Examples

Teach your AI coding agent how to use Strale:

Agent Skills — SKILL.md files for Claude Code, Cursor, Copilot, and Codex. Copy skills/strale/ into your project's .claude/skills/, .github/skills/, or .cursor/skills/ directory.

Code examples: