Changelog - 2026-09-06

ignis-atlas replaces two MCP servers

Behavior Change

In one line. ignis-docs-mcp and ignis-knowledge are both gone; @venizia/ignis-atlas answers the same questions from one MCP server.

Switch an existing MCP config from the old bin to the new one:

{
  "mcpServers": {
    "ignis-atlas": {
      "command": "bunx",
      "args": ["@venizia/ignis-atlas", "mcp"]
    }
  }
}

The problem it solves

Two servers answered the same kind of question: ignis-docs-mcp for the wiki, ignis-knowledge for the agent-facing knowledge bundle. Neither shared code with the other, and neither ranked results well. ignis-docs-mcp's fuzzy search returned off-topic pages for most engineering queries. A malformed YAML file in ignis-knowledge loaded silently as an empty concept. On the maintainer's machine on 2026-09-05, one cold ignis-docs-mcp query took 538-881 ms, most of it building a fresh search index every run.

What changed

• One server, not two. @venizia/ignis-atlas (packages/atlas) answers what ignis-docs-mcp and ignis-knowledge used to answer, from one Bun-only process.
• Two tools, not thirteen. search and get replace ignis-docs-mcp's ten tools and ignis-knowledge's okf_search, okf_list_concepts and okf_get_concept.
• Ranking uses BM25. SQLite FTS5 indexes the wiki, the changelogs and the knowledge bundle by section, not by whole file. A hit names the exact heading, not just the file.
• Every read is budgeted. A search reply stays under 2,000 characters. get pages a chunk at 8,000 characters per call, with a cursor for the rest. Neither tool returns a whole file uncapped.
• Changelogs are searchable again. ignis-docs-mcp excluded them from its index; atlas treats changelog as its own corpus.

Who is affected

• Anyone with ignis-docs-mcp in an MCP config. Switch the command to the snippet above.
• Maintainers of this repository. .mcp.json now starts ignis-atlas. okf_search, okf_list_concepts and okf_get_concept are gone; search and get replace them, with corpus: "knowledge" for what those three used to cover.
• Everyone else. No action needed.

Details

Symbol	Change	Package
ignis-docs-mcp (bin)	Removed	@venizia/ignis-docs
okf_search, okf_list_concepts, okf_get_concept	Removed	.agents/knowledge-tools
search, get (MCP tools)	New	@venizia/ignis-atlas
ignis-atlas (bin)	New	@venizia/ignis-atlas

• Extension page: Atlas.