Icalia Labs Developer Resources

We ship code.
Some of it is
public.

Icalia Labs engineers maintain open-source APIs, SDKs, agent skills, and the engineering guides we use internally. Everything below is real, versioned, and linked to its source.

View github.com/IcaliaLabs → Read llms.txt

Flagship · REST + MCP API

Sepomex

The open REST and MCP API for Mexico's postal codes. Every zip code, state, municipality, city, and settlement — one bundled SQLite database, no API key, no rate limit.

As of v1.0.0, Sepomex also exposes its data to AI agents directly through the Model Context Protocol — over Streamable HTTP (/mcp) and stdio (bin/mcp).

Source on GitHub →

REST endpoint

GET /api/v1/zip_codes?zip_code=64000

MCP server

Streamable HTTP at /mcp, or stdio via bin/mcp.

Hosted instance

sepomex.kurenn.dev

License

MIT · ~154k settlements bundled, zero external dependencies.

More from Icalia Labs

SDKs, skills,
and how we build.

Official SDK

icalia-sdk-ruby

The official Icalia SDK for Ruby, with event and webhook primitives. Apache-2.0.

Claude Agent Skill

identity-verification-skill

Open-source, Claude-powered identity verification for remote hiring across the US and LatAm. MIT licensed.

Engineering guides

guides

The set of rules we use internally at Icalia Labs to build better software.

68+ repositories total, 5,000+ cumulative GitHub stars. See the full list at github.com/IcaliaLabs.

For agents & crawlers

Machine-readable resources.

/llms.txt

Structured summary of Icalia Labs for AI agents, including when-to-use guidance.

/sitemap.xml

Full index of every page on icalialabs.com.

/robots.txt

Crawler rules and sitemap pointer.

Sepomex /mcp

Live MCP server for Mexican postal-code data.

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