personal-finance-agent: Instructions file for Codex

AGENTS.md

personal-finance-agent AGENTS.md is an instructions file for Codex, OpenCode from albeorla/personal-finance-agent. It costs 300 tokens per session, scanned A, original, MIT.

Project instructions for a personal-finance service and its financial-agent MCP server. MCP is a standard way for an AI agent to use tools provided by another program.

In plain words
What is it for?
It is for guiding development and maintenance of this financial-agent project.
Why use it?
Shared instructions help coding agents follow the project's rules and understand how its financial tools are meant to work.

Instructions file for CodexOpenCode

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

This is albeorla/personal-finance-agent's own configuration. It tells Codex and OpenCode how to work on personal-finance-agent 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 personal-finance-agent configures →

Reuse

Borrowing it

Nothing to install: this file belongs to albeorla/personal-finance-agent. 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/albeorla/personal-finance-agent/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/albeorla/personal-finance-agent

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.

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README.md
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Per session 300 This file is loaded in full into every session.
When invoked 300 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 $0.00300 $0.00300
Opus 5.5 $0.00120 $0.00120
Sonnet 5.5 $0.00060 $0.00060
Haiku 4.5 $0.00030 $0.00030

Measured 2mo ago against content hash 0559a48a1d13, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

personal-finance-agent 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 · 17 lines

What it actually says

financial-agent-mcp

Project-specific notes. User-level defaults in ~/.codex/AGENTS.md apply; this file only adds what is specific to this repo.

What this is

The finance MCP server (90 tools over a local SQLite database). Development happens here in the private repo; the public copy is published as personal-finance-agent. The live install serving daily use is the finances workspace at ~/dev/finances-golive (its DB, .env, and rule block live there, not here). See README.md for architecture and docs/ for design.

Hard constraints

  • Never point dev or test runs at the live database (~/dev/finances-golive/finance-agent.sqlite). Tests use fixtures/temp DBs; anything touching FINANCE_AGENT_DB_PATH must use a scratch path.
  • Cash-flow truth is obligation_instances; discovered recurring charges are proposals until applied and must not affect projections.
  • No live writes (Todoist, SimpleFIN) and no new dependencies without explicit approval.

Working here

  • Tests: uv run pytest -q (about 945 tests). Run before handoff.
  • claude-integration/ holds the staged install assets (skill, instructions block, MCP registration); tests/test_integration_assets.py guards their wording, so run it after editing them.
  • hooks/pre-commit exists; see hooks/README.md.
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 · 17 lines · 300 tokens per session scan A 0559a48a1d13

Subscribe to this mod's changes

personal-finance-agent AGENTS.md is an instructions file published in the GitHub repository albeorla/personal-finance-agent (0 stars, last pushed 1mo ago), licensed MIT. It adds 300 tokens to every session, about $0.0012 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 2026-09-05.

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