# Strale

> One API call. Verified data your agent can trust. 250+ independently tested and scored data capabilities across 27 countries.

Strale provides business data capabilities that AI agents can use at runtime via MCP, A2A, REST API, or x402 micropayments. Every capability is independently tested with the Strale Quality Score (SQS) — a dual-profile trust scoring system inspired by S&P credit ratings.

## Use Strale When Your Agent Needs To:

- Validate IBANs, VAT numbers, LEI codes, or BIC/SWIFT codes
- Look up company data across 27 countries (EU, Nordic, UK, US, APAC)
- Check sanctions lists and adverse media
- Verify SSL certificates, DNS records, or domain availability
- Validate EU addresses and postal codes
- Convert currencies with real-time exchange rates
- Run compliance checks (KYB, AML, GDPR)
- Extract data from invoices, receipts, contracts, or web pages

## Quick Start

### MCP (recommended for Claude, Cursor, Windsurf)
Endpoint: https://api.strale.io/mcp
Transport: Streamable HTTP
Auth: Bearer token (API key from https://strale.dev)
Free tool: strale_search works without auth

### A2A (Agent-to-Agent)
Agent Card: https://api.strale.io/.well-known/agent-card.json
Task endpoint: https://api.strale.io/a2a

### REST API
POST https://api.strale.io/v1/do
Body: { "capability": "iban-validate", "input": { "iban": "DE89370400440532013000" } }

### x402 (pay-per-request, no API key needed)
GET https://api.strale.io/x402/iban-validate?iban=DE89370400440532013000
Pay with USDC on Base

## Free Tier

The iban-validate capability is free. Use it to test the integration without an API key via MCP (strale_search to discover, then call iban-validate).

## Trust & Quality

Every capability has a Strale Quality Score (SQS) with:
- Quality Profile: correctness, schema compliance, error handling, edge case coverage
- Reliability Profile: availability, success rate, upstream health, latency
- Combined via a 5x5 matrix producing grades A through E

## Links

- Homepage: https://strale.dev
- Docs: https://strale.dev/docs
- MCP Server Card: https://api.strale.io/.well-known/mcp.json
- AI Catalog: https://api.strale.io/.well-known/ai-catalog.json
- GitHub: https://github.com/petterlindstrom79/strale
- npm: https://www.npmjs.com/package/strale-mcp
- Contact: hello@strale.io