# Nigel Ball Music

> Probe-verified (tier 2 of 3). Last checked 2026-08-23. 4 of 5 capability checks passed.

- host: nigelballmusic.com
- url: https://nigelballmusic.com/
- category: rock blues musician
- type: personal
- country: MX
- locations: Eureka Springs, Arkansas, United States, River Junction, Michigan, St Julien de Peyrolas, France, Upton Upon Severn, United Kingdom, Camberley, Germany, Tarpon Springs, Florida, Jensen Beach, Chur, Switzerland, Schwyz, La Neuveville, Kent, Caxias do Sul, Brazil, Cabo, Mexico
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-08-23 against rubric v1. 4 of 5 checks passed.

- PASS — Markdown negotiation
- PASS — Markdown twin at a predictable URL
- fail — llms.txt
- PASS — API catalog
- PASS — MCP server answers

MCP tools (from tools/list on 2026-08-23, served from www.nigelballmusic.com): get_biography, list_shows, list_albums, get_contact, list_registry

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **contact** — "Bookings, lessons and enquiries: nigel.c.ball@gmail.com" → `mailto:nigel.c.ball@gmail.com`

## Summary

Nigel Ball is a British rock blues singer, guitarist, songwriter, and bassist with over 30 years of touring experience internationally.

## Context

322 sites in this index share the type "personal"; 66 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known-Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark