---
schema_version: "newruntime-reader-dossiers-v1"
type: "reader_dossier"
slug: "stealthstackcrawler"
kind: "agentic_registry"
operator: "StealthStack"
researched_at: "2026-10-23"
confidence: "medium"
json_url: "https://newruntime.com/readers/stealthstackcrawler.json"
canonical_url: "https://newruntime.com/readers/stealthstackcrawler/"
---

# StealthStackCrawler

> Crawler for StealthStack, 'the index of the agentic web', which crawls Agentic Resource Discovery (ARD) catalogs and indexes the skills, MCP servers, A2A agents and catalogs they publish (about 48.9k resources from 4.8k domains as of 2026-10-22). It identifies itself with did:web:stealthstack.ai, whose DID document resolves at stealthstack.ai.

## Dossier

- Kind: Agentic web & MCP registries
- Operator: StealthStack (https://stealthstack.ai/)
- Documentation: none found
- robots.txt tokens: none documented
- Feeds: registry / directory
- Respects robots.txt: Not documented. No crawler documentation found; robots behaviour not stated.
- Verification: No published method (https://stealthstack.ai/.well-known/did.json)
- Labels matched in our logs: stealthstackcrawler

## Why it matters to New Runtime (our interpretation)

Indexes ARD/agent catalogs into a search index with its own MCP server, a discovery path for agents looking for sources like ours.

## Observed behaviour

- Baseline 2026-10-23 (93-day window): 13 requests on 5 days; first seen 2026-10-04, last seen 2026-10-22; Returning.
- Live numbers: https://newruntime.com/bot-traffic-history.json and https://newruntime.com/crawler-journeys.json

## Sources

- https://stealthstack.ai/
- https://stealthstack.ai/.well-known/did.json

Identity: A family name is what a client claims in its user agent. It is verified only when its request came from the operator's published IP ranges or passed forward-confirmed reverse DNS, as reported per family in /crawler-journeys.json. Anyone can claim any name.

All dossiers: https://newruntime.com/readers.md