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 nicknisi/sessions --skill contextgit clone --depth 1 https://github.com/nicknisi/sessionsWrote 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/nicknisi/sessions/context)<a href="https://agentmods.dev/skills/nicknisi/sessions/context"><img src="https://agentmods.dev/badge/skills/nicknisi/sessions/context/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/nicknisi/sessions/context"><img src="https://agentmods.dev/badge/skills/nicknisi/sessions/context.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00114 | $0.00444 |
| Opus 5.5 | $0.00046 | $0.00178 |
| Sonnet 5.5 | $0.00023 | $0.00089 |
| Haiku 4.5 | $0.00011 | $0.00044 |
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 1mo 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
Synthesize a prose context primer from past sessions on this repo.
Steps
- Fetch the primer. Call the
get_context_primerMCP tool (passcwdif a path was given). - Synthesize, don't dump. From the JSON, write: prior decisions, what was tried/abandoned, and the current open thread.
- Anchor the open thread on the most-recent session's
closing—closing.useris the last thing you actually typed andclosing.assistantis the assistant's last substantive reply (outcomes like "PR is up: …" survive);branchis the branch you left off on. - Drill into a session worth expanding. If one primer session needs more than its opening/closing (an ambiguous open thread, a decision you need the details of), get its full arc from
get_session_digest: resolve the session'sfilePathviasearch_sessions(a distinctive phrase from itsintentplus the repo asproject), then digest that path. Expand a specific exchange withget_session_messages(offset: exchanges[].index)— don't page from 0. - Keep it tight — a short brief the user can act on, not a transcript.
Guidelines
- Prefer the most recent + most-edited files as the likely active surface.
- If the primer is empty, say so plainly; don't invent history.
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.
- 1mo ago First seen · 28 lines · 114 tokens per session scan A a5f193bc3fd8
context is a skill published in the GitHub repository nicknisi/sessions (39 stars, last pushed 10d ago), licensed MIT. It adds 114 tokens to every session and 444 once invoked, about $0.0005 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.
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