vibekit: Instructions file for Codex

AGENTS.md

vibekit AGENTS.md is an instructions file for Codex, OpenCode from initlabsai/vibekit. It costs 3,319 tokens per session, scanned A, original, MIT.

A repository guide for VibeKit, a toolkit that exposes Algorand blockchain operations through a shared tool interface, command line, and agent loop. Algorand is a blockchain network; the Explorer displays returned results in a terminal or web page.

In plain words
What is it for?
Use it when developing VibeKit tools for accounts, assets, contracts, networks, or transactions, or when updating its agent and Explorer integrations.
Why use it?
It explains where the toolkit, reference app, tools, plugins, and core request flow belong before structural changes are made.

Instructions file for CodexOpenCode

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

This is initlabsai/vibekit's own configuration. It tells Codex and OpenCode how to work on vibekit 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 vibekit configures →

Reuse

Borrowing it

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

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Per session 3,319 This file is loaded in full into every session.
When invoked 3,319 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 $0.03319 $0.03319
Opus 5.5 $0.01328 $0.01328
Sonnet 5.5 $0.00664 $0.00664
Haiku 4.5 $0.00332 $0.00332

Measured 1mo ago against content hash 16a3caccc66f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vibekit 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 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.

AGENTS.md · 214 lines

How it starts

The opening of the file, as written. The whole thing — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

The map of this repository, for people and coding agents alike. README.md is the product page. Read docs/CONSTITUTION.md before structural changes.

VibeKit exposes Algorand capabilities through one tool contract across MCP, CLI, and an LLM agent loop, and ships an Explorer (terminal and web) that renders what those tools return.

What runs where

Path What it is
packages/vibekit The one published package, @initlabs/vibekit. Every src/ area is a subpath export.
apps/reference The reference agent: a Bun server mounting the toolkit and a Vite/React page over vibekit add components. Keep it small; it is the tutorial's endpoint.
packages/vibekit/src/core (.) The tool contract, resolveDeployment, executeToolCall, the codec, and the compose engine (core/compose/).
packages/vibekit/src/tools (./tools, ./tools/views) The domain tools: accounts, assets, contracts, network, transactions — each a flat directory of index.ts (the tool definitions), schemas.ts, and the functions behind them. views.ts maps each view id to its wire schema.
packages/vibekit/src/plugins/* (./plugins/<name>) Third-party tool plugins: nfd, pera, vestige, alpha-arcade.
packages/vibekit/src/signer-keystore (./signer-keystore) The algosdk signer over the keystore daemon, its account tools, the testnet dispenser.
packages/vibekit/src/mcp (./mcp, ./mcp/stdio, ./mcp/http) Host: ToolDefinition-to-MCP adapter and transports.
packages/vibekit/src/agent (./agent, ./agent/config) Host: the LLM tool loop and its stored config.
packages/vibekit/src/preset (./preset) The stock tool and plugin mix every stock host composes from.
packages/vibekit/examples Reference stdio and HTTP deployments, typechecked with the package.
apps/cli The vibekit binary: new, init, localnet, keystore, dispenser, doctor, tool, mcp, explore. Host: commands/tool.ts and commands/mcp.ts.
apps/tui The terminal Explorer (OpenTUI). Live against a network when reachable, sample data otherwise. features/<name>/ holds one feature's hooks, screen, and cards; feed/ is the transcript; app.tsx composes them.
apps/agent The web Explorer with its agent (Next.js). Sample-backed reads plus a compose-only flow route.
apps/website The public site (Astro/Starlight).
skills/ Canonical skills, compiled into the CLI by bun run --cwd apps/cli bundle-skills. .agents/skills, .claude/skills, .grok/skills are symlinks into it.
verify/ The packed-consumer gate (bun run verify:packed). The LocalNet smoke is apps/cli/scripts/smoke-localnet.ts (bun run smoke:localnet, needs vibekit localnet start; CI runs it).
test-prompts/ Agent-run MCP acceptance prompts and their transcripts.
ideas/ Dated design notes that are not yet work.
out/ Marketing video build output (see the marketing-content skill).
docs/ CONSTITUTION.md and PRODUCTION.md only.

Read the full file on GitHub · 214 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. 1mo ago First seen · 214 lines · 3,319 tokens per session scan A 16a3caccc66f

Subscribe to this mod's changes

vibekit AGENTS.md is an instructions file published in the GitHub repository initlabsai/vibekit (27 stars, last pushed 1mo ago), licensed MIT. It adds 3,319 tokens to every session, about $0.0133 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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