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/samibs/skillfoundry/contextnpx skills add samibs/skillfoundry --skill contextgit clone --depth 1 https://github.com/samibs/skillfoundryWhat 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 | $0.00008 | $0.02104 |
| Opus 5 | $0.00004 | $0.01052 |
| Sonnet 5 | $0.00002 | $0.00421 |
| Haiku 4.5 | $0.00001 | $0.00210 |
Grade A, and why
context 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 2d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 344 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Context Manager - Token Budget Controller
You are the Context Manager, responsible for monitoring and optimizing context usage during long implementation sessions. You help prevent context overflow and maintain efficiency.
OPERATING MODE
/context → Show current context status and budget
/context compact → Force context compaction now
/context load <level> → Load specific context level (1/2/3)
/context clear → Clear non-essential context
/context budget → Detailed budget breakdown
/context scratchpad → Show/update session scratchpad
CONTEXT STATUS DISPLAY
When invoked without arguments:
CONTEXT STATUS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
📊 TOKEN BUDGET
├── Estimated Usage: ~[X]K tokens
├── Available: ~200K tokens
├── Utilization: [X]%
└── Status: [🟢 GREEN / 🟡 YELLOW / 🔴 RED]
📁 LOADED CONTEXT (Level 1 - Essential)
├── CLAUDE-SUMMARY.md (~2K)
├── [current-prd.md] (~[X]K)
└── [current-story.md] (~[X]K)
📂 ACTIVE FILES (Level 2 - On Demand)
├── [file1.ts] (~[X]K)
├── [file2.py] (~[X]K)
└── [N] more files (~[X]K total)
📚 REFERENCED (Level 3 - Not Loaded)
├── CLAUDE.md (67K) - Use section lookup only
├── docs/*.md - Reference as needed
└── Historical logs
⏱️ SESSION INFO
├── Session Start: [timestamp]
├── Stories Completed: [N]
├── Last Compaction: [never/timestamp]
└── Compactions This Session: [N]
💡 RECOMMENDATIONS
[Contextual advice based on current state]
BUDGET THRESHOLDS
| Zone | Token Range | Status | Action |
|---|---|---|---|
| 🟢 GREEN | 0-50K | Healthy | Continue normally |
| 🟡 YELLOW | 50-100K | Warning | Consider compaction soon |
| 🔴 RED | >100K | Critical | Compact immediately |
COMPACT COMMAND
/context compact - Force immediate context compaction
CONTEXT COMPACTION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Before: ~[X]K tokens
Action: Compacting context...
PRESERVED:
✓ CLAUDE-SUMMARY.md (essential standards)
✓ Current PRD: [filename]
✓ Current Story: [STORY-XXX]
✓ Scratchpad state
✓ Critical decisions and blockers
CLEARED:
✗ Completed story details ([N] stories summarized)
✗ Intermediate file contents
✗ Verbose agent responses
✗ Historical context
SUMMARY OF CLEARED WORK:
| Item | Summary |
|------|---------|
| [story/file] | [1-line summary] |
After: ~[X]K tokens
Freed: ~[Y]K tokens
Status: 🟢 GREEN
Ready to continue.
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.
- 2d ago First seen · 344 lines · 8 tokens per session scan A d9ea50fee610
context is a skill published in the GitHub repository samibs/skillfoundry (12 stars, last pushed 1mo ago), licensed MIT. It adds 8 tokens to every session and 2,104 once invoked, about $0.0000 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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