Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/codingagentsystem/cas/cas-task-trackingnpx skills add codingagentsystem/cas --skill cas-task-trackinggit clone --depth 1 https://github.com/codingagentsystem/casWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00037 | $0.00309 |
| Opus 5 | $0.00018 | $0.00154 |
| Sonnet 5 | $0.00007 | $0.00062 |
| Haiku 4.5 | $0.00004 | $0.00031 |
Grade A, and why
cas-task-tracking scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
CAS Task Tracking
Use mcp__cas__task instead of built-in TodoWrite. CAS tasks persist across sessions.
Core Workflow
- Create:
mcp__cas__task action=create title="..." description="..." priority=2 - Start:
mcp__cas__task action=start id=<task-id> - Progress:
mcp__cas__task action=notes id=<task-id> notes="..." note_type=progress - Close:
mcp__cas__task action=close id=<task-id> reason="..."
Useful Actions
- Ready tasks:
mcp__cas__task action=ready— unblocked, actionable work - My tasks:
mcp__cas__task action=mine— tasks assigned to you - Blocked:
mcp__cas__task action=list status=blocked - Add dependency:
mcp__cas__task action=dep_add id=<task> to_id=<blocker> dep_type=blocks
Note Types
progress, blocker, decision, discovery — use the right type so notes are meaningful in context.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 28 lines · 37 tokens per session scan A 1e847f45b13e
cas-task-tracking is a skill published in the GitHub repository codingagentsystem/cas (151 stars, last pushed 5mo ago), licensed MIT. It adds 37 tokens to every session and 309 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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