A command for loading context at the start of an agent session by inspecting a project's files and documentation. It reports the project's structure, purpose, and key instructions.

It is for listing tracked files, reading the specified README and documentation, and summarising the project's purpose and working instructions.

It helps a new agent understand the repository before making decisions or edits. This reduces the chance of missing important project-specific guidance.

How ianphil/promptbin configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to ianphil/promptbin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/ianphil/promptbin/master/.claude/commands/prime.md

Clone the repo

git clone --depth 1 https://github.com/ianphil/promptbin

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/ianphil/promptbin/prime/github.svg)](https://agentmods.dev/commands/ianphil/promptbin/prime)

Your own site

<a href="https://agentmods.dev/commands/ianphil/promptbin/prime"><img src="https://agentmods.dev/badge/commands/ianphil/promptbin/prime/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/ianphil/promptbin/prime"><img src="https://agentmods.dev/badge/commands/ianphil/promptbin/prime.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 143 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00016	$0.00143
Opus 5.5	$0.00006	$0.00057
Sonnet 5.5	$0.00003	$0.00029
Haiku 4.5	$0.00002	$0.00014

Measured 2mo ago against content hash 2493dcf2f4b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

prime 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.

.claude/commands/prime.md · 22 lines

What it actually says

Prime

Run the commands under the Execute section to gather information about the project, and then review the files listed under Read to understand the project's purpose and functionality then Report your findings.

Execute

git ls-files

Read

README.md
ai_docs/cc_hooks_docs.md
ai_docs/uv-single-file-scripts.md
ai_docs/anthropic_custom_slash_commands.md
ai_docs/anthropic_docs_subagents.md

Report

Provide a summary of your understanding of the project

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.

2mo ago First seen · 22 lines · 16 tokens per session scan A 2493dcf2f4b2

Subscribe to this mod's changes

prime is a command published in the GitHub repository ianphil/promptbin (0 stars, last pushed 10mo ago), licensed MIT. It adds 16 tokens to every session and 143 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 2026-08-31.

Building agents Memory and context

prime next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
primeianphil/promptbin	Command	0	10mo ago	MIT	A	16	Claude Code
minutes-ideassilverstein/minutes	Command	1.6k	yesterday	MIT	A	48	Claude Code, OpenCode
learnReflexioAI/claude-smart	Command	791	3d ago	Apache-2.0	A	14	Claude Code
memory-storeverygoodplugins/mcp-automem	Command	66	yesterday	MIT	A	10	Claude Code
analyze-contextRohiRIK/OpenLtm	Command	29	8d ago	MIT	A	39	Claude Code
cc-memoryTheLobbi/claude	Command	21	7d ago	MIT	A	0	Claude Code
lians-recallLians-ai/Lians	Command	17	5d ago	Apache-2.0	A	19	Claude Code

promptbin: Command for Claude Code