Atlas MCP tools

The facts Atlas holds, why it believes them and where decisions and the system disagree. These are the 3 tools of the atlas backend; all MCP tools lists the other backends.

atlas_get_factCopy Anchor Link

Why Atlas believes a fact. One fact with its proof tree: the rule and the facts it was derived from, down to the evidence each rests on (observations, artifacts, extractions), and whether every leaf rests on evidence (complete). An incomplete proof comes back as no proof with complete false, never a shorter tree. Cite this when you state the fact.

Scopes: mcp:read, decisions:read · reads only

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "atlas_get_fact",
    "arguments": {
      "space_id": "<space_id>"
    }
  }
}

atlas_list_contradictionsCopy Anchor Link

Where decisions and the system disagree. The facts of a space that evidence contradicts, each with the evidence against it and its own support kept: both sides, neither averaged away. Use it to find where a decision (ADR, RFC) and the running system or code disagree.

Scopes: mcp:read, decisions:read · reads only

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "atlas_list_contradictions",
    "arguments": {
      "space_id": "<space_id>"
    }
  }
}

atlas_list_factsCopy Anchor Link

What Atlas knows. The facts Atlas currently believes about a space's system (what runs, what depends on what, which decision governs it), derived and observed. Each says its support (none, observed, supported, verified), its validity (current, stale, expired; stale is not false) and whether evidence contradicts it. Filter by subject, derived, validity or contradicted. space_id is a Decisions space (decisions_list_spaces). Answer from these, never from memory.

Scopes: mcp:read, decisions:read · reads only

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "atlas_list_facts",
    "arguments": {
      "space_id": "<space_id>"
    }
  }
}