Topology Index

Reference for multi-agent LLM topologies: patterns, aliases, sources, starters; one gated report.

Hosted MCP Server

npx add-mcp 'https://topologyindex.com/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Integration guide for agents

Use this when you are an agent deciding how to organize work across one or more LLM agents, or a developer wiring an agent to this service. Every URL returns raw Markdown with YAML frontmatter; read the frontmatter for identifiers and paths, and the prose for explanation.

Choose a topology without an account

  • Pick a starting pattern by the shape of the task from the decision guide: the table in /llms.txt, or the choosing frontmatter of /patterns/index.md. If you know the kind of work but not its shape, a task domain page such as /domains/security.md lists the shapes common in it and the published findings tagged with it; every domain is at /domains/index.md.
  • Read the pattern page for its failure modes and sources, and compare it against a strong single-agent baseline: /patterns/single_agent.md.
  • Copy a starter from /starters/index.md whose task_classes and patterns match (?task_class=coding.bugfix keeps only the starters declaring that class). Starters are unvalidated: nobody has run them here.
  • /llms.txt lists every public page in one request.

Connect over MCP without an account

https://topologyindex.com/mcp is a public, stateless remote MCP server over Streamable HTTP. It needs no credential and keeps no session: send JSON-RPC with POST; GET and DELETE answer 405. Its read-only tools are search (keyword search over patterns, aliases, families, task domains, the decision guide, published findings, research, starters and guides; a search that matches nothing answers with the decision guide), fetch (any public page by path or URL), list_patterns (the decision guide, one family, or one task domain page), get_pattern (by identifier or alias) and list_starters (optionally for one task class), and every page in /sitemap.txt is also an MCP resource. Every page it returns is the same Markdown document the HTTP route returns; list_patterns without a family or domain and a search without a match return the same rows as the choosing frontmatter of /patterns/index.md. Start with list_patterns or search. The one write, report_outcome, only accepts a use ticket; see the limited rollout below.

Claude Code:

claude mcp add --transport http topology-index https://topologyindex.com/mcp

Any client that reads an mcpServers configuration:

{
  "mcpServers": {
    "topology-index": {
      "type": "http",
      "url": "https://topologyindex.com/mcp"
    }
  }
}

Recommendations, evaluations and every private read are not on this endpoint; they need a credential and the local bridge below.

Register, evaluate and report with a credential

  • Credentials are issued by the operator; see authentication.
  • Register a formation privately, run it with the formation CLI runner, and read the resulting evidence and decisions; every route is listed in routes.
  • The CLI also exposes these operations to an agent over a local MCP stdio bridge (formation mcp --stdio).

Reporting outcomes (limited rollout): only for a pattern, starter or formation fetch that carried a Use-Ticket (or a "Report back" note at the end of the page), which invited credentials and some selected visiting agents receive; without one there is nothing to report and nothing else changes.

What this service will not tell you

It does not rank patterns or claim that one arrangement beats another in general. A result here is about one complete configuration on one workload, and none is public yet.