# Topology Index (remote · topologyindex.com)

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

- Trust score: 75/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-25

## Components

- remote · `topologyindex.com`: 75/100 (this document), [markdown](https://verifymcp.io/servers/com-topologyindex-topology-index/topologyindex.md), [page](https://verifymcp.io/servers/com-topologyindex-topology-index/topologyindex)

## Channel facts

- Endpoint: `https://topologyindex.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.4.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-25.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 85/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 4675 tokens (~38/item across 120 items; 6 tools + 114 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 82/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 38% of tool parameters carry a description.
  - Structured output schemas are declared (17% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Topology Index MCP server?

Topology Index is a hosted endpoint at https://topologyindex.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

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

### Cursor

```json
{
  "mcpServers": {
    "com-topologyindex-topology-index": {
      "url": "https://topologyindex.com/mcp"
    }
  }
}
```

### VS Code

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

### Codex

```toml
[mcp_servers.com-topologyindex-topology-index]
url = "https://topologyindex.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-topologyindex-topology-index": {
      "type": "remote",
      "url": "https://topologyindex.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-topologyindex-topology-index --url 'https://topologyindex.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-topologyindex-topology-index:
    url: "https://topologyindex.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-topologyindex-topology-index": {
      "Transport": "http",
      "Url": "https://topologyindex.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-topologyindex-topology-index -t streamable-http -u 'https://topologyindex.com/mcp'
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-25 (score 75, −1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 76, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “fetch” rewrote its description, which is the text the model reads
- [security] Tool “get_pattern” rewrote its description, which is the text the model reads
- [security] Tool “list_patterns” rewrote its description, which is the text the model reads
- [security] Tool “report_outcome” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: 36 → 40
- [functional improvement] Tool coverage: 80% → 88%
- [functional improvement] Stability: unverified → 0.03
- [functional] New resource “domains/security/findings.md”
- [functional] New resource “docs/schemas/domain_findings/v0.1.md”
- [functional] New resource “docs/schemas/pattern_findings/v0.1.md”
- [functional] New resource “domains/coding/findings.md”
- [functional] New resource “domains/documents/findings.md”
- [functional] New resource “domains/evaluation/findings.md”
- [functional] New resource “domains/operations/findings.md”
- [functional] New resource “domains/reasoning/findings.md”
- [functional] New resource “domains/research/findings.md”
- [functional] New resource “patterns/adaptive_routing/findings.md”
- [functional] New resource “patterns/architecture_search/findings.md”
- [functional] New resource “patterns/blackboard/findings.md”
- [functional] New resource “patterns/coordinator_election/findings.md”
- [functional] New resource “patterns/council/findings.md”
- [functional] New resource “patterns/critic_loop/findings.md”
- [functional] New resource “patterns/debate/findings.md”
- [functional] New resource “patterns/dynamic_spawning/findings.md”
- [functional] New resource “patterns/fan_out/findings.md”
- [functional] New resource “patterns/hierarchical_delegation/findings.md”
- [functional] New resource “patterns/implement_review/findings.md”
- [functional] New resource “patterns/independent_workers/findings.md”
- [functional] New resource “patterns/lane_swarm/findings.md”
- [functional] New resource “patterns/mailbox_network/findings.md”
- [functional] New resource “patterns/map_reduce/findings.md”
- [functional] New resource “patterns/planner_worker/findings.md”
- [functional] New resource “patterns/role_pipeline.md”
- [functional] New resource “patterns/role_pipeline/findings.md”
- [functional] New resource “patterns/shared_ledger/findings.md”
- [functional] New resource “patterns/signed_coordination/findings.md”
- [functional] New resource “patterns/single_agent/findings.md”
- [functional] New resource “patterns/successor_handoff/findings.md”
- [functional] New resource “patterns/supervisor/findings.md”
- [functional] New resource “patterns/tree_search.md”
- [functional] New resource “patterns/tree_search/findings.md”
- [functional] New resource “starters/research-split-and-combine/0.1.0.md”
- [functional] New resource “starters/research-supervised-investigation/0.1.0.md”
- [functional] New resource “starters/security-planned-audit/0.1.0.md”
- [cosmetic] “report_outcome” added an optional parameter “model_precision”
- [cosmetic] “report_outcome” reworded the description of “model_id”
- [cosmetic] “report_outcome” reworded the description of “task_class”

### 2026-09-23 (score 75)

First indexed and scored.

## MCP tools (6)

### `search` (~107 tokens)

Search Topology Index

Keyword search, with common synonyms, over pattern names, aliases and families, the decision guide, the domains, sources and benchmarks of published findings, research, starters and guides. At most 10 results, each a path for `fetch`; if no page matches every word, pages matching some; if none, the decision guide. Matches text only; never ranks patterns.

Input parameters:

- `query` (string, required): Words to look for, such as "orchestrator worker", "verification" or "coding".

Output parameters:

- `match` (string)
- `results` (array)

### `fetch` (~110 tokens)

Fetch a public page

Returns the Markdown document of any public page, exactly as HTTP serves it, from a root-relative path (/patterns/supervisor.md) or a https://topologyindex.com URL. Private tenant routes are not reachable here. A pattern, starter or formation read may add a second item, a one-time use ticket for `report_outcome` (limited rollout).

Input parameters:

- `path_or_url` (string, required): A path such as /patterns/index.md, or https://topologyindex.com/patterns/index.md.

### `list_patterns` (~172 tokens)

List patterns

The decision guide: where to start by the shape of the task, the pattern to consider next and when to avoid each, plus the pattern families (the `choosing` rows of /patterns/index.md, without the rest of that page). With a family, /patterns/index.md?family={family}: that family’s patterns and the rows that name them. With a domain, /domains/{domain}.md: the task shapes common in that kind of work, their rows, the sources of the published findings tagged with it (never a ranking; each finding in words at /domains/{domain}/findings.md) and its starters.

Input parameters:

- `domain` (string): Read the lens of one task domain instead; not together with a family.
- `family` (string): Restrict the list to one pattern family.

### `get_pattern` (~96 tokens)

Get a pattern

One pattern page (/patterns/{pattern}.md): definition, aliases, when it is hypothesised to fit, failure modes, sources and whether this deployment can execute it. Accepts a pattern identifier or a known alias. May add a second item, a one-time use ticket for `report_outcome` (limited rollout).

Input parameters:

- `pattern` (string, required): A pattern identifier such as supervisor, or an alias such as orchestrator-worker.

### `list_starters` (~74 tokens)

List starter formations

The starter formation index (/starters/index.md): unvalidated, unsigned FORMATION.md documents to copy and register privately. With a task class, only the starters that declare it (/starters/index.md?task_class={task_class}).

Input parameters:

- `task_class` (string): A task class such as coding.bugfix.

### `report_outcome` (~149 tokens)

Report a use ticket outcome

Limited rollout: only for a use ticket from a pattern, starter or formation read. If you have no ticket, do not call it. With one, report once after your task: pass, fail or abandoned, never a prompt, code or log. Fields: /docs/api/contributing.md.

Input parameters:

- `elapsed_milliseconds` (integer|null)
- `input_tokens` (integer|null)
- `model_id` (string, required)
- `model_precision`
- `outcome` (required)
- `output_tokens` (integer|null)
- `task_class` (string, required)
- `tests_passed` (integer, required)
- `tests_ran` (integer, required)
- `ticket` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-topologyindex-topology-index/topologyindex#diagnostics

## Score history

- 2026-09-25: 75
- 2026-09-24: 76
- 2026-09-23: 75

## Common questions

### What is the Topology Index MCP server?

Topology Index is an MCP server listed in the public MCP registry as com.topologyindex/topology-index. Reference for multi-agent LLM topologies: patterns, aliases, sources, starters; one gated report. This page covers its hosted endpoint (https://topologyindex.com/mcp).

### Is the Topology Index MCP server safe to use?

Topology Index scores 75 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Topology Index MCP server expose?

Topology Index exposes 6 tools: search, fetch, list_patterns, get_pattern, list_starters, report_outcome. Their descriptions and schemas cost roughly 708 tokens of context every time the server is loaded.

### Does the Topology Index MCP server require authentication?

No. We connected to Topology Index without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Topology Index MCP server still maintained?

Topology Index is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://topologyindex.com/mcp
- Website: https://topologyindex.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-topologyindex-topology-index/topologyindex.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-topologyindex-topology-index/topologyindex.json
- HTML version of this page: https://verifymcp.io/servers/com-topologyindex-topology-index/topologyindex