GET /v1/lessons/:id

Auth: tenant — _Status:_ stable

Fetch one lesson by id. Tenant-scoped: a leaked id never surfaces another tenant's row.

curl -H "Authorization: Bearer atr_…" \
     http://arbiter.example.com/v1/lessons/14

Response

200 OK

Same lesson shape as POST /v1/lessons.

Failure modes

Status	When
401	Missing / invalid bearer.
404	Lesson not found for this tenant.

See also

• PATCH /v1/lessons/:id, DELETE /v1/lessons/:id, GET /v1/lessons
• Lessons concept