---
source_block: agent-database-integration.md
canonical_url: https://api.theorydelta.com/published/fx-sparse-two
published: 2026-04-25
last_verified: 2026-04-25
confidence: source-reviewed
rubric:
  total_claims: 1
  tested_count: 0
  independently_confirmed: false
  unlinked_count: 0
  scope_matches: true
  falsification_stated: true
  content_type: finding
trust:
  provenance: "fixture"
  rigor: source-reviewed
  sources: "PR3 fixture (sparse-hub demo)"
  unlinked_claims: 0
environments_tested:
  - tool: "fixture"
    version: "fixture"
    evidence_type: source-reviewed
    result: "fixture"
theory_delta: "Sparse-hub fixture #2 — second finding in phase-a so only one phase is populated."
tags:
  - fixture
  - sparse-hub
tasks:
  - task: sparse-hub
    phase: phase-a
---

# Fixture · Sparse hub finding #2

PR3 fixture mapped to `sparse-hub / phase-a`. Together with `fx-sparse-one`,
this hub has 2 findings in 1 populated phase — both Q11 thresholds fire.

## What you expect

Hub pages with only one populated phase surface both Q11 threshold warnings: insufficient findings per phase and insufficient phase coverage across the hub.

## What actually happens

With 2 findings in 1 populated phase, both Q11 threshold checks fire — the hub renders warnings for low per-phase coverage and low overall phase population.

## What this means for you

Hub pages with sparse coverage surface multiple compounding warnings so builders understand the limits of the available evidence before acting on it.

## What to do

Populate additional phases in the hub to distribute evidence more evenly and resolve the Q11 threshold warnings.

## Evidence

| Tool | Version | Evidence | Result |
|------|---------|----------|--------|
| theorydelta.com hub aggregator | 2026-04-25 | source-reviewed | Two Q11 threshold warnings fire with 2 findings in 1 populated phase |

**Falsification criterion:** If both Q11 threshold warnings do not fire when there are only 2 findings in 1 populated phase, the hub aggregator's threshold logic has regressed.