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 instructions/dawitlabs/capsule/agents-mdgit clone --depth 1 https://github.com/dawitlabs/capsuleWhat 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 | $0.00075 | $0.00075 |
| Opus 5 | $0.00037 | $0.00037 |
| Sonnet 5 | $0.00015 | $0.00015 |
| Haiku 4.5 | $0.00007 | $0.00007 |
Grade A, and why
capsule AGENTS.md 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- capsule CLAUDE.md — 100% identical, 0 lines differ
What it actually says
Capsule Context
Before working in this repo:
- Read
.capsules/index.md. - Read the capsule matching the task area.
- Run
capsule stale <name>to check if sources changed. - If stale, inspect the changed files before editing.
- Update capsules when durable project knowledge 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.
- 2d ago First seen · 12 lines · 75 tokens per session scan A 1d650724bbff
capsule AGENTS.md is an instructions file published in the GitHub repository dawitlabs/capsule (4 stars, last pushed 2mo ago), licensed MIT. It adds 75 tokens to every session, about $0.0004 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 2026-08-31.
Other instructions, from other repositories
agent-plugins AGENTS.md
Instructions for awslabs/agent-plugins, covering agent plugins for aws, tl;dr pitch, core concepts, plugins vs skills vs mcp servers and key design decision: skills auto-trigger.
agent-plugins codeowners.instructions.md
Instructions for awslabs/agent-plugins, covering codeowners file rules, plugins (alphabetically listed) and file must end with codeowners file.
agent-plugins copilot-instructions.md
Instructions for awslabs/agent-plugins, covering project overview, technology stack, code organization, development practices and plugin development guidelines.
ratel AGENTS.md
Instructions for ratel-ai/ratel, covering agents.md — working in the ratel repo, build & test, rust, ts and python (from src/sdk/python/; needs uv).
awesome-reviewers CLAUDE.md
Instructions for baz-scm/awesome-reviewers, covering awesome reviewers — repository guidelines, what this project is, source of truth, site layer and machine interface.
agent-library CLAUDE.md
Instructions for arcadeai-labs/agent-library, covering claude.md, project overview, key technologies, current status and development commands.