token-monitor

Modular LLM API quota and usage visibility tool. Extracts rate-limit and usage data from all configured LLM providers before failures happen.

Why it exists: team-vigilio hit its 7-day rate limit (9+ days of 429s). api-ateam ran out of credit mid-session. We kept flying blind. This tool surfaces quota health before the failure.

Usage

node monitor.js                          # human-readable summary + log to file
node monitor.js --json                   # JSON output + log to file
node monitor.js --summary                # human-readable only (no log)
node monitor.js --provider team-nadja    # single provider
node monitor.js --no-log                 # suppress log file write

Example output

Token Monitor — 2026-04-04 16:59 UTC
════════════════════════════════════════════════════════════

team-vigilio    [CRITICAL]  MAXED — 7d: 100% | resets in 23h 0m
team-ludo       [UNKNOWN]   Invalid API key (401)
team-molto      [OK]        5h: 32% | 7d: 45% | resets in 4h 0m
team-nadja      [OK]        5h: 52% | 7d: 39% | resets in 3h 0m
team-buio       [UNKNOWN]   Invalid API key (401)
shelley-proxy   [OK]        tokens: 4,800,000/4,800,000 | cost: $0.000013/call
api-ateam       [UNKNOWN]   Anthropic API does not expose billing/quota via REST

────────────────────────────────────────────────────────────
Overall: 1 CRITICAL, 3 OK, 3 UNKNOWN

JSON output schema

{
  "timestamp": "2026-04-04T16:59:50.000Z",
  "providers": {
    "team-vigilio": {
      "type": "teams-direct",
      "status": "rejected",
      "utilization_5h": 0.94,
      "utilization_7d": 1.0,
      "representative_claim": "seven_day",
      "reset_timestamp": 1743800000,
      "reset_in_seconds": 82800,
      "organization_id": "1d7653ad-...",
      "severity": "critical",
      "probe_latency_ms": 210
    },
    "shelley-proxy": {
      "type": "shelley-proxy",
      "status": "ok",
      "tokens_remaining": 4800000,
      "tokens_limit": 4800000,
      "requests_remaining": 20000,
      "requests_limit": 20000,
      "tokens_reset": "2026-04-04T17:59:50Z",
      "cost_per_call_usd": 0.000013,
      "severity": "ok",
      "probe_latency_ms": 180
    },
    "api-ateam": {
      "type": "api-direct",
      "status": "no_billing_data",
      "message": "Anthropic API does not expose billing/quota via REST.",
      "severity": "unknown",
      "probe_latency_ms": 0
    }
  }
}

Provider support

Provider	Type	Data available
team-vigilio, team-ludo, team-molto, team-nadja, team-buio	Anthropic Teams (direct)	5h/7d utilization (0–100%), status, reset countdown, severity
shelley-proxy	Shelley/exe.dev proxy	Token headroom, request headroom, per-call USD cost
api-ateam	Anthropic API (pay-per-use)	Key validity only — no billing API exists

Severity levels

Level	Condition
critical	Teams provider rejected (rate limited / budget exhausted)
warning	Teams 7d utilization > 85%, or 5h utilization > 70%
ok	Healthy
unknown	Invalid key (401), no billing data, or probe error

Rate-limit header schemas

Teams direct (oat01 keys — all team-* providers): Anthropic Teams uses the unified schema. Headers are present on every response (200 and 429).

• anthropic-ratelimit-unified-5h-utilization — 5-hour window utilization (0.0–1.0)
• anthropic-ratelimit-unified-7d-utilization — 7-day budget utilization (0.0–1.0)
• anthropic-ratelimit-unified-status — allowed | rejected
• anthropic-ratelimit-unified-representative-claim — which window is binding (five_hour | seven_day)
• anthropic-ratelimit-unified-reset — Unix timestamp when binding window resets

Shelley proxy (exe.dev gateway): Uses classic absolute-count headers plus an exe.dev-injected cost header:

• Anthropic-Ratelimit-Tokens-Remaining / Limit — absolute token counts
• Anthropic-Ratelimit-Requests-Remaining / Limit — request counts
• Exedev-Gateway-Cost — USD cost per call (unique to exe.dev gateway)

Log files

Each run appends to ~/.logs/token-monitor/YYYY-MM-DD.jsonl:

# View today's log
cat ~/.logs/token-monitor/$(date +%Y-%m-%d).jsonl | \
  python3 -c "import sys,json; [print(json.loads(l)['ts'], json.loads(l)['providers']['team-vigilio']['severity']) for l in sys.stdin]"

# Check when team-vigilio was last healthy
grep '"team-vigilio"' ~/.logs/token-monitor/*.jsonl | \
  python3 -c "import sys,json; [print(l[:40]) for l in sys.stdin if json.loads(l.split(':',1)[1])['providers']['team-vigilio']['severity']=='ok']"

Architecture

monitor.js              — CLI entrypoint, orchestrates probes
providers/
  index.js              — reads ~/.pi/agent/models.json, returns typed provider list
  anthropic-teams.js    — unified schema parser (oat01 keys, all team-* providers)
  anthropic-api.js      — pay-per-use (api03 keys) — reports "no billing data"
  shelley-proxy.js      — classic schema + Exedev-Gateway-Cost header
logger.js               — JSONL log to ~/.logs/token-monitor/
report.js               — human-readable summary + severity logic
test.js                 — test suite (run: node test.js)

How to add a new provider

1. Add provider to ~/.pi/agent/models.json with "api": "anthropic-messages"
2. If it uses Teams unified schema and its name starts with team-: picked up automatically
3. For a custom schema: create providers/yourprovider.js, implement probeYourProvider(), classify it in providers/index.js, add probe dispatch in monitor.js

Probe behavior

The tool makes one minimal API call per provider to extract headers:

• Model: claude-haiku-4-5-20251001 (cheapest available)
• Max tokens: 1 (minimizes cost)
• Rate-limit headers are returned on every response (200 and 429) for Teams providers
• A 429 from a maxed provider is expected and treated as valid quota data

Stealth: Read-only, one call per run, no hammering. Run at most once per session.

Related

• ~/projects/provider-check/ — predecessor (liveness only, no quota depth)
• ~/.pi/agent/models.json — provider configuration source
• Forgejo issue: trentuna/a-team#91