caplets: Instructions file for Codex

AGENTS.md

caplets AGENTS.md is an instructions file for Codex, OpenCode from spiritledsoftware/caplets. It costs 1,490 tokens per session, scanned A, original, MIT.

Repository instructions for Caplets, a monorepo: one repository containing several related packages. They document the required tools, commands, package roles, and checks.

In plain words
What is it for?
Installing dependencies, running formatting, linting, type checks, tests, builds, benchmarks, the development server, or checks for a specific Caplets package.
Why use it?
They prevent developers from using the wrong package manager, runtime version, command, or validation step. They also make it easier to work on one package without guessing how the repository is organized.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md; mentions OpenCode.

This is spiritledsoftware/caplets's own configuration. It tells Codex and OpenCode how to work on caplets itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything caplets configures →

Reuse

Borrowing it

Nothing to install: this file belongs to spiritledsoftware/caplets. 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/spiritledsoftware/caplets/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/spiritledsoftware/caplets

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 1,490 This file is loaded in full into every session.
When invoked 1,490 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01490 $0.01490
Opus 5.5 $0.00596 $0.00596
Sonnet 5.5 $0.00298 $0.00298
Haiku 4.5 $0.00149 $0.00149

Measured 2mo ago against content hash e698e7d66330, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

caplets 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 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.

AGENTS.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Commands

  • Use pnpm only; the repo pins [email protected] and requires Node >=22.
  • Install with pnpm install --frozen-lockfile when matching CI.
  • Full local gate and pre-push hook: pnpm verify (format:check -> lint -> code-mode:check-api -> schema:check -> docs:check -> typecheck -> test -> benchmark:check -> build).
  • Fast focused checks: pnpm format:check, pnpm lint, pnpm typecheck, pnpm test, pnpm build.
  • Run one package: pnpm --filter @caplets/core test, pnpm --filter @caplets/sdk test, pnpm --filter caplets build, or replace the filter with @caplets/opencode, @caplets/pi, or @caplets/benchmarks.
  • Run one Vitest file by passing it after the package script, e.g. pnpm --filter @caplets/core test -- test/config.test.ts.
  • Dev server: pnpm dev builds/watches @caplets/core and restarts packages/cli/dist/index.js; run pnpm build first if CLI dist output is missing.

Package Map

  • packages/core is the runtime/library source: config parsing, schema generation, MCP/OpenAPI/GraphQL/HTTP/CLI backends, native service exports.
  • packages/sdk owns the independent public Caplets SDK. Its root is the browser/Node Fetch client generated from the canonical public HTTP contract plus curated Caplet Bundle helpers; @caplets/sdk/project-binding owns the browser-safe fixed-v1 coordinator, and @caplets/sdk/project-binding/node owns marker-aware filesystem fingerprints. Keep caller authentication optional and caller-owned, require isolated clients and explicit service/WebSocket roots, and exclude MCP and dashboard-private routes.
  • packages/cli publishes the caplets binary and delegates almost all behavior to @caplets/core; caplets serve starts the MCP server, while no args print help.
  • packages/opencode and packages/pi are native agent integrations that wrap @caplets/core/native; keep integration-specific schema/adapter code there.
  • packages/benchmarks owns deterministic and opt-in live coding-agent benchmarks; deterministic benchmark docs are generated from pnpm benchmark.

Read the full file on GitHub · 67 lines

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. 2mo ago First seen · 67 lines · 1,490 tokens per session scan A e698e7d66330

Subscribe to this mod's changes

caplets AGENTS.md is an instructions file published in the GitHub repository spiritledsoftware/caplets (14 stars, last pushed 13d ago), licensed MIT. It adds 1,490 tokens to every session, about $0.0060 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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