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 skills add burin-labs/harn --skill context-maintenancegit clone --depth 1 https://github.com/burin-labs/harnWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/burin-labs/harn/context-maintenance)<a href="https://agentmods.dev/skills/burin-labs/harn/context-maintenance"><img src="https://agentmods.dev/badge/skills/burin-labs/harn/context-maintenance/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/burin-labs/harn/context-maintenance"><img src="https://agentmods.dev/badge/skills/burin-labs/harn/context-maintenance.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00016 | $0.00132 |
| Opus 5.5 | $0.00006 | $0.00053 |
| Sonnet 5.5 | $0.00003 | $0.00026 |
| Haiku 4.5 | $0.00002 | $0.00013 |
Grade A, and why
context-maintenance 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 2mo 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.
What it actually says
Context maintenance hooks
Install the [[hooks]] entries in harn.toml, keep hook handlers fast, and
run context.refresh / context.crystallize in a host-owned background lane.
Persist the returned harn.context_maintenance.job_receipt.v1 receipts so
replay can include the job or emit a deterministic skipped receipt.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2mo ago First seen · 13 lines · 16 tokens per session scan A 1d3b28b0a72e
context-maintenance is a skill published in the GitHub repository burin-labs/harn (29 stars, last pushed today), licensed Apache-2.0. It adds 16 tokens to every session and 132 once invoked, about $0.0001 per session on Opus 5.5. 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.
context-maintenance compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| context-maintenanceburin-labs/harn | Skill | 29 | today | Apache-2.0 | A | 16 | Claude Code |
| translateRTGS2017/NagaAgent | Skill | 1.5k | 5d ago | AGPL-3.0 | A | 40 | Claude Code, Codex |
| hindsight-localvectorize-io/hindsight | Skill | 59k | yesterday | MIT | A | 32 | Claude Code, Codex |
| agentmemory-agentsrohitg00/agentmemory | Skill | 30k | yesterday | Apache-2.0 | A | 46 | Claude Code |
| memory-retainvectorize-io/hindsight | Skill | 59k | yesterday | MIT | A | 46 | Cursor |
| last30Dayschaitanyagiri/munder-difflin | Skill | 9.3k | 6d ago | MIT | A | 83 | Claude Code |
| md-fetch-summarizechaitanyagiri/munder-difflin | Skill | 9.3k | 6d ago | MIT | A | 93 | Claude Code |