kiasumiles: Instructions file for Codex

AGENTS.md

kiasumiles AGENTS.md is an instructions file for Codex, OpenCode from hosanxiv/kiasumiles. It costs 284 tokens per session, scanned A, original, MIT.

A project instruction file for KiasuMiles, a hosted Python service that recommends Singapore credit cards for earning travel miles. It describes the system structure, commands, testing rules, and how recommendations should be shown.

In plain words
What is it for?
Running tests, starting the service, checking its packaging, and maintaining its deterministic card and merchant recommendation logic.
Why use it?
It keeps the agent's changes and responses consistent with the project's design and user-facing rules.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 284 This file is loaded in full into every session.
When invoked 284 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 $0.00284 $0.00284
Opus 5 $0.00142 $0.00142
Sonnet 5 $0.00057 $0.00057
Haiku 4.5 $0.00028 $0.00028

Measured 9d ago against content hash 584308ecb0bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

kiasumiles 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 9d 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 · 26 lines

What it actually says

Project

KiasuMiles is a hosted Python MCP service for Singapore credit-card miles recommendations. Keep lookup, merchant matching, and card ranking deterministic: no web calls from the recommendation path.

Architecture

  • kiasumiles/hosted.py is the FastMCP adapter. Keep it thin.
  • kiasumiles/tools.py contains reusable tool handlers for Codex, tests, and future hosted ChatGPT Apps SDK adapters.
  • kiasumiles/agent_contract.py is the agent-facing contract: tool descriptions, accepted categories, and display rules.
  • kiasumiles/engine/ owns merchant matching and card ranking.
  • kiasumiles/data/ owns bundled CSV loading.

Commands

  • Run tests with .venv/bin/python -m pytest.
  • Run the hosted MCP server locally with .venv/bin/kiasumiles-hosted.
  • Check packaging metadata with .venv/bin/python -m pip show kiasumiles-mcp.

Agent Behavior

  • Do not show users card_id, MCC codes, or raw technical fields unless they ask for diagnostics.
  • Prefer cap_summary when displaying recommendation caps.
  • If wallet_configured is false, ask which cards the user carries before giving a final recommendation.
  • Treat routing_note and low_confidence_note as user-visible caveats.
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. 9d ago First seen · 26 lines · 284 tokens per session scan A 584308ecb0bb

Subscribe to this mod's changes

kiasumiles AGENTS.md is an instructions file published in the GitHub repository hosanxiv/kiasumiles (21 stars, last pushed today), licensed MIT. It adds 284 tokens to every session, about $0.0014 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 2026-08-30.

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