Proof that shows its limits.

Each reference build exposes its control path, deterministic checks, and missing production controls. These are self-directed portfolio implementations, not client projects or outcome claims.

Verified builds: 5
Sample deliverables: 1
Client-result claims: 0

START WITH THE EVIDENCE

Tests are useful only when the boundary is visible.

The checks below use local runtimes, synthetic or deterministic fixtures, and zero live client systems. Every page states what was verified, what remains untested, and which production decision still needs an accountable owner.

01 / RELIABILITY5 API tests

Loopwatch

An automation operations console with step history, bounded retries, explicit terminal failures, and a visible human-review queue.

FastAPI and SQLite
Local runtime
Zero silent demo failures

Inspect the reference build

02 / HUMAN CONTROL7 tests

Document Gate

Document intake with extraction, deterministic policy checks, duplicate blocking, confidence-aware review, and a disabled downstream boundary.

5 seeded scenarios
Auditable decisions
0 external actions

Inspect the reference build

03 / TRUSTED REPORTING8 tests

Signal Brief

Authorized-source monitoring that distinguishes no change from no data and withholds claims when a critical source contract fails.

5 seeded scenarios
Freshness evidence
0 external deliveries

Inspect the reference build

04 / NATIVE N8N7 invariants

n8n Reliability Lab

A credential-free native workflow for validation, duplicate suppression, bounded retry planning, and human-review routing.

5 deterministic fixtures
Mutation guard
0 external actions

Inspect the reference build

05 / API HANDOFF10 invariants

n8n API Handoff Lab

A real n8n HTTP Request against a loopback mock CRM, proving bounded whole-node retry and replay-safe sandbox writes.

6 loopback requests
2 stored contacts
0 Internet actions

Inspect the reference build

SAMPLE DELIVERABLE

See how evidence becomes a production decision.

The sample n8n reliability review separates verified behavior from assumptions, prioritizes five production gaps, and blocks connection until an accountable acceptance gate is satisfied. It is derived only from the self-directed lab, not from a client audit.

Read the sample review

REPRODUCE THE CHECKS

Download the exact n8n test harness.

The free JSON workflow is the same credential-free artifact used for the public evidence. It contains no account, tracking, upload, credential, webhook, or external action.

Inspect and download the harness

APPLY THE CONTROL PATTERN

Which failure path matters in your workflow?

Use the private fit check to identify a bounded first service without sending or storing your answers.

Check workflow fit