context

context is a skill for Claude Code, Codex from nicknisi/sessions. It costs 114 tokens per session (444 once invoked), scanned A, original, MIT.

A repo history brief that gathers what earlier coding sessions decided, tried, and left unfinished. It uses session records to explain the current state of a code repository.

In plain words
What is it for?
Use it to catch up on a repository, find the latest unfinished work, review past decisions, or expand a particular earlier discussion.
Why use it?
It saves you from searching old conversations or guessing why the code is in its current state. You can quickly recover the open task when returning to a project.

Skill for Claude CodeCodex

Part of the sessions plugin — 7 skills, 1 MCP server shipped together

Install

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.

agentmods
npx agentmods add skills/nicknisi/sessions/context
Any agent
npx skills add nicknisi/sessions --skill context
Clone the repo
git clone --depth 1 https://github.com/nicknisi/sessions

Made for: Claude Code, Codex.

Or install sessions, the plugin that ships this one along with the rest of its 7 skills, 1 MCP server.

Wrote 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.

agentmods badge for context

README.md
[![agentmods](https://agentmods.dev/badge/skills/nicknisi/sessions/context.svg)](https://agentmods.dev/skills/nicknisi/sessions/context)
Your own site
<a href="https://agentmods.dev/skills/nicknisi/sessions/context"><img src="https://agentmods.dev/badge/skills/nicknisi/sessions/context.svg" alt="Measured on agentmods" height="20"></a>
Per session 114 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 444 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00114 $0.00444
Opus 5 $0.00057 $0.00222
Sonnet 5 $0.00023 $0.00089
Haiku 4.5 $0.00011 $0.00044

Measured 3d ago against content hash a5f193bc3fd8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 3d 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.

plugin/skills/context/SKILL.md · 28 lines

What it actually says

Synthesize a prose context primer from past sessions on this repo.

Steps

  1. Fetch the primer. Call the get_context_primer MCP tool (pass cwd if a path was given).
  2. Synthesize, don't dump. From the JSON, write: prior decisions, what was tried/abandoned, and the current open thread.
  3. Anchor the open thread on the most-recent session's closingclosing.user is the last thing you actually typed and closing.assistant is the assistant's last substantive reply (outcomes like "PR is up: …" survive); branch is the branch you left off on.
  4. 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's filePath via search_sessions (a distinctive phrase from its intent plus the repo as project), then digest that path. Expand a specific exchange with get_session_messages(offset: exchanges[].index) — don't page from 0.
  5. 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.
Changes

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.

  1. 3d ago First seen · 28 lines · 114 tokens per session scan A a5f193bc3fd8

Subscribe to this mod's changes

context is a skill published in the GitHub repository nicknisi/sessions (28 stars, last pushed 8d ago), licensed MIT. It adds 114 tokens to every session and 444 once invoked, about $0.0006 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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