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Praxis CI a7f7c4e1cc feat(P02): SLICE-08 operator API cohort endpoints — auth-gated, k-anon
TASK-08-01: server/operator/cohort.py — GET /api/operator/cohort practice
  volume view (sessions_count, active_learners_count), k-anon display.
TASK-08-02: server/operator/mastery.py — GET /api/operator/mastery
  (gate_open_rate, median_mastery_score, rubric_criterion_means).
TASK-08-03: server/operator/failure_patterns.py — GET /api/operator/failure-patterns
  (failure_mode:*, branch:* metrics).
TASK-08-04: server/operator/credentials.py — GET /api/operator/credentials
  + POST /api/operator/credentials/{id}/revoke (VC management, D-057).
TASK-08-05: tests/test_operator_endpoints.py — 401/200/503, suppressed
  cells value=null, last_updated=max, revoke, no per-learner data (R-DASH-02).
server/operator/_common.py — shared Cell/PathView/ViewResponse models +
  all_recent_aggregates query + group_by_path helper.

All endpoints auth-gated via Depends(current_operator) (D-057). No PII
beyond aggregates (D-031, R-DASH-02).

---ci---
project: praxis
phase: 2
milestone: v0.4
status: execute
persona: backend-engineer
task: 08-01..08-05
requirements:
  covered: [REQ-DASH-01, REQ-NFR-DASH-01]
---/ci---
2026-08-04 02:03:50 +00:00

Praxis — v0.1 Foundation

Voice-first AI apprenticeship platform. v0.1 is a tech-validation harness (per G-008) for the minimal viable voice loop: a single learner speaks to an AI tutor playing a Customer Service role-play scenario, hears a <600ms-latency response, receives an end-of-session coaching debrief, and has the session logged to SQLite.

Status

Phase 1 (minimal viable voice loop) — code-complete, pending live API keys for runtime verification.

Stack

  • Orchestration: Pipecat (D-017) with Silero VAD + interruptibility
  • ASR: Deepgram Nova-3 streaming (D-013)
  • LLM: Ollama Cloud direct API (D-020) — gemma4:cloud (role-play) + deepseek-v4-flash:cloud no-think (debrief)
  • TTS: Cartesia Sonic (primary, D-014) / Piper (self-hosted, R4 mitigation) — behind an interface
  • Client: React + Vite + WebRTC (Pipecat client SDK, D-015)
  • State: SQLite praxis.db (D-007, single hardcoded learner, no auth)

Layout

server/      Pipecat pipeline, services (TTS/LLM/Guardrail interfaces), scenario runtime, adapters
client/      React + Vite + WebRTC learner surface
scenarios/   YAML scenario definitions (D-018)
db/          SQLite schema, migrations, async store
scripts/     Latency probes (R1-R4), e2e smoke
tests/       Unit + e2e
docs/        Latency report, debrief templates

Quickstart

  1. Copy .env.example.env, fill in DEEPGRAM_API_KEY, CARTESIA_API_KEY, OLLAMA_API_KEY.
  2. Install server deps: pip install -e ".[dev]"
  3. Install client deps: cd client && npm install
  4. Run probes: python scripts/probe_deepgram.py (etc.)
  5. Run server: python -m server
  6. Run client: cd client && npm run dev

See docs/latency-report.md for the R1-R4 spike status and TTS decision.

S
Description
Praxis v0.1 — voice-first AI apprenticeship platform: AI tutor role-play with sub-600ms latency, coaching debriefs, SQLite logging.
Readme 1.7 MiB
2026-08-04 22:36:00 +00:00
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