What is one-person-capital AGENTS.md?

A contributor guide for OnePersonCapital, an application for managing companies run by AI agents. It explains the required product documents, repository layout, development commands, local database setup, and health checks.

Use it when onboarding to the repository, locating the API, user interface, database, shared packages, and documentation, starting development, checking the service, or resetting the local database.

It gives developers and coding agents a shared starting point for understanding the project and running it locally. It also identifies the main build specification so implementation work follows the intended V1 scope.

How arthurzhuhan/one-person-capital configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to arthurzhuhan/one-person-capital. 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/arthurzhuhan/one-person-capital/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/arthurzhuhan/one-person-capital

Made for: Codex, OpenCode.

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/instructions/arthurzhuhan/one-person-capital/agents-md/github.svg)](https://agentmods.dev/instructions/arthurzhuhan/one-person-capital/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/arthurzhuhan/one-person-capital/agents-md"><img src="https://agentmods.dev/badge/instructions/arthurzhuhan/one-person-capital/agents-md/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/instructions/arthurzhuhan/one-person-capital/agents-md"><img src="https://agentmods.dev/badge/instructions/arthurzhuhan/one-person-capital/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 877 This file is loaded in full into every session.

When invoked 877 The same file — it is already loaded in full.

Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 95% copy Near-identical to another mod 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	$0.00877	$0.00877
Opus 5	$0.00439	$0.00439
Sonnet 5	$0.00175	$0.00175
Haiku 4.5	$0.00088	$0.00088

Measured 11d ago against content hash a912573479cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade C, and why

one-person-capital AGENTS.md scanned grade C with 2 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 11d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm -rf data/pglite

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl http://localhost:3100/api/health

Origin

This is a copy

95% identical to paperclip-surfers AGENTS.md — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

AGENTS.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Guidance for human and AI contributors working in this repository.

1. Purpose

OnePersonCapital is a control plane for AI-agent companies. The current implementation target is V1 and is defined in doc/SPEC-implementation.md.

2. Read This First

Before making changes, read in this order:

doc/GOAL.md
doc/PRODUCT.md
doc/SPEC-implementation.md
doc/DEVELOPING.md
doc/DATABASE.md

doc/SPEC.md is long-horizon product context. doc/SPEC-implementation.md is the concrete V1 build contract.

3. Repo Map

server/: Express REST API and orchestration services
ui/: React + Vite board UI
packages/db/: Drizzle schema, migrations, DB clients
packages/shared/: shared types, constants, validators, API path constants
doc/: operational and product docs

4. Dev Setup (Auto DB)

Use embedded PGlite in dev by leaving DATABASE_URL unset.

pnpm install
pnpm dev

This starts:

API: http://localhost:3100
UI: http://localhost:3100 (served by API server in dev middleware mode)

Quick checks:

curl http://localhost:3100/api/health
curl http://localhost:3100/api/companies

Reset local dev DB:

rm -rf data/pglite
pnpm dev

5. Core Engineering Rules

Keep changes company-scoped. Every domain entity should be scoped to a company and company boundaries must be enforced in routes/services.
Keep contracts synchronized. If you change schema/API behavior, update all impacted layers:

packages/db schema and exports
packages/shared types/constants/validators
server routes/services
ui API clients and pages

Preserve control-plane invariants.

Single-assignee task model
Atomic issue checkout semantics
Approval gates for governed actions
Budget hard-stop auto-pause behavior
Activity logging for mutating actions

Do not replace strategic docs wholesale unless asked. Prefer additive updates. Keep doc/SPEC.md and doc/SPEC-implementation.md aligned.

6. Database Change Workflow

Read the full file on GitHub · 143 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.

11d ago First seen · 143 lines · 877 tokens per session scan C a912573479cf

Subscribe to this mod's changes

one-person-capital AGENTS.md is an instructions file published in the GitHub repository arthurzhuhan/one-person-capital (24 stars, last pushed 5mo ago), licensed MIT. It adds 877 tokens to every session, about $0.0044 per session on Opus 5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). It is 95% identical to paperclip-surfers AGENTS.md, differing in 8 lines, and is treated as a copy.

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vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

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one-person-capital: Instructions file for Codex