Strale

Trust and quality infrastructure for AI agents.

What is Strale

Strale is a capability marketplace for AI agents. Agents call strale.do() at runtime to access 200+ 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 composite built from correctness, schema stability, availability, error handling, and edge case coverage. 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 — 200+ 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 a weighted composite of five factors: correctness (40%), schema stability (25%), availability (20%), error handling (10%), and edge case coverage (5%), computed over a recency-weighted rolling 10-run window.

Scores are public. Check any capability:

GET https://strale-production.up.railway.app/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

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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:

• Verify a company with Strale (Python)
• Validate IBANs — free, no API key (Python)
• Build an agent with Strale (TypeScript)
• Connect Strale to Claude (setup guide)

Strale is the trust layer for AI agents.

License

MIT