A0

Write, check, run and compile A0 programs through revision-checked structured edits.

What does this entry provide?

A0 is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 56/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. No automated install command is listed; check the repository for manual setup instructions. Review the last-pushed date and repository status before adding A0 to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.

Snapshot facts

Source: Official MCP Registry
Quality: 56/100
Install method: manual
Repo: Joe-Simo/a0
Repo updated: Oct 1, 2026

Install command

See source docs

Install method: manual

Review the upstream source before running this command.

GitHub project Homepage

Quality

Repo stars

Repo updated

Oct 1, 2026

How is this score calculated?

Weighted across six dimensions, scored 0-100.
Provenance (25): listed in an official or curated registry.
Installability (25): a runnable install command beats a declared transport, which beats a source checkout.
Maintenance (20): recency of the last push; archived entries score zero here.
Adoption (20): repository stars on a log curve.
Documentation (10) and description quality (10): parsed manifest or SKILL.md frontmatter, and a real description rather than a placeholder.

MCP manifest

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-10-01T18:09:04.388183Z",
      "publishedAt": "2026-10-01T18:09:04.388183Z",
      "statusChangedAt": "2026-10-01T18:09:04.388183Z"
    }
  },
  "server": {
    "name": "io.github.Joe-Simo/a0",
    "title": "A0",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "version": "0.8.16",
    "packages": [
      {
        "transport": {
          "type": "stdio"
        },
        "fileSha256": "ec11d1a0341fb89e9bf17ab9d6d502df5d4fe2afd2b2d57cc78cd04f47328cb5",
        "identifier": "https://github.com/Joe-Simo/a0/releases/download/v0.8.16/a0-mcp-darwin-arm64.mcpb",
        "registryType": "mcpb"
      },
      {
        "transport": {
          "type": "stdio"
        },
        "fileSha256": "905fc58960ca66a1cf7fd4064e9faf53d3e860826c2717b5dcf9716507beca7e",
        "identifier": "https://github.com/Joe-Simo/a0/releases/download/v0.8.16/a0-mcp-darwin-x64.mcpb",
        "registryType": "mcpb"
      },
      {
        "transport": {
          "type": "stdio"
        },
        "fileSha256": "fb770d4518210b5068ed685c616c491631ffd4d18ec2f7bb04ecbc0d7600027e",
        "identifier": "https://github.com/Joe-Simo/a0/releases/download/v0.8.16/a0-mcp-linux-x64.mcpb",
        "registryType": "mcpb"
      },
      {
        "transport": {
          "type": "stdio"
        },
        "fileSha256": "3707c9d48819dd94e945b00a84afbbe5b0460cb375b3020609ef10abcb02e357",
        "identifier": "https://github.com/Joe-Simo/a0/releases/download/v0.8.16/a0-mcp-linux-arm64.mcpb",
        "registryType": "mcpb"
      },
      {
        "transport": {
          "type": "stdio"
        },
        "fileSha256": "840e0f04c9a0fc945ddf426905daa5846a3820cb767b9d3f9b62a17222a5dd8c",
        "identifier": "https://github.com/Joe-Simo/a0/releases/download/v0.8.16/a0-mcp-windows-x64.mcpb",
        "registryType": "mcpb"
      }
    ],
    "repository": {
      "url": "https://github.com/Joe-Simo/a0",
      "source": "github"
    },
    "websiteUrl": "https://a0lang.com",
    "description": "Write, check, run and compile A0 programs through revision-checked structured edits."
  }
}

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