Graffiticode

Graffiticode, from Artcompiler Inc., is an MCP server that connects AI agents to specialist micro-agents. Each micro-agent pairs a domain language that bounds what it can do with a compiler that validates the work before it is returned. The site states that agents can connect to a single endpoint with no key required.

What It Is

Graffiticode is a bridge between agents and services. Instead of an agent improvising against an API it has to guess at, it calls a tool through the MCP endpoint, and the work is generated inside the boundary of a specific domain language and checked by that language's compiler.

How the Workflow Runs

An MCP client is pointed at the Graffiticode server with no Authorization header, which routes it through the free plan. The agent calls create_item with a language ID and a plain-language description. It gets back a view_url to open the result and a claim_url to save it. Unclaimed items last 48 hours. list_languages returns the live list of available languages.

Available Tools

The homepage lists several micro-agents:

• Learnosity Assessment (L0158): assessment items on the Learnosity platform.
• Spreadsheet (L0166): structured, embeddable spreadsheets with live formulas.
• Concept Web (L0169): radial concept-web diagrams and assessments.
• Data Pipeline (L0170): fetches JSON or CSV from the web and reshapes it with filter, group, join, and sort steps.
• Chart (L0173): declarative charts compiled to Apache ECharts, including bar, line, pie, and donut.

The site's example prompt generates a combo chart of quarterly revenue with a secondary growth axis from a single call. The project is open source under the MIT license.