The bridge between agents and services

Your agent shouldn't guess at a specialist's job. Point it at one endpoint — no key required.

Each micro-agent pairs a domain language that formally bounds what it can do with a compiler that validates the work before it comes back. Your agent delegates to a specialist instead of improvising against an API it has to guess at.

Get started in 30 seconds →Browse the tools

https://mcp.graffiticode.org/mcp

Chart — made with one MCP callOpen ↗

An agent made this with one call.

The prompt that made this L0173 artifact

prompt

A combo chart titled 'Quarterly Revenue & Growth' with eight quarters on the x-axis (Q1–Q4 2024, then Q1–Q4 2025). Revenue as vertical bars (thousands): 120, 150, 170, 210, 240, 230, 290, 340. A smooth line on a secondary y-axis shows quarter-over-quarter growth percent: 0, 25, 13, 24, 14, -4, 26, 17. Label the left axis 'Revenue ($K)' and the right axis 'Growth (%)'. Include a legend, value labels on the bars, light gridlines, and a clean modern theme.

No credential required — pass this prompt to the MCP server’s create_item and open the returned view_url.

From zero to a working result

No sign-up, no token to fetch. The free plan is the no-credential path.

Connect — no key required

Point any MCP client at https://mcp.graffiticode.org/mcp with no Authorization header. That routes you through the free plan.

Ask in plain language

Call create_item with a language and a description. The micro-agent generates inside that language’s boundary, and its compiler validates the work before it comes back.

Get a result — keep it if you want

You get back a view_url to open the result and a claim_url to save it. Unclaimed items last 48 hours.

Add the server (no headers)

{
  "mcpServers": {
    "graffiticode": {
      "url": "https://mcp.graffiticode.org/mcp"
    }
  }
}

Your first call

create_item({
  language: "L0173",
  description: "A combo chart titled 'Quarterly Revenue & Growth' with eight quarters on the x-axis (Q1–Q4 2024, then Q1–Q4 2025). Revenue as vertical bars (thousands): 120, 150, 170, 210, 240, 230, 290, 340. A smooth line on a secondary y-axis shows quarter-over-quarter growth percent: 0, 25, 13, 24, 14, -4, 26, 17. Label the left axis 'Revenue ($K)' and the right axis 'Growth (%)'. Include a legend, value labels on the bars, light gridlines, and a clean modern theme."
})

Full install guide for Claude, Cursor & ChatGPT →

One server, many smart tools

Each is a micro-agent bounded by its own domain language — what it can do is defined, not improvised. Call list_languages for the live list.

Learnosity AssessmentL0158

Assessment items on the Learnosity platform.

See it live →

SpreadsheetL0166

Structured, embeddable spreadsheets with live formulas.

See it live →

Concept WebL0169

Radial concept-web diagrams and assessments.

See it live →

Data PipelineL0170

Fetch JSON or CSV from the web and reshape it with a filter, group, join, and sort pipeline.

See it live →

ChartL0173

Declarative charts compiled to Apache ECharts — bar, line, pie, donut, and more.

See it live →