pretix-agent-mcp: Instructions file for Codex

AGENTS.md

pretix-agent-mcp AGENTS.md is an instructions file for Codex, OpenCode from bitcoinaustria/pretix-agent-mcp. It costs 1,785 tokens per session, scanned A, original, MIT.

Project instructions for developing pretix-agent-mcp, a server that lets AI agents administer a pretix event-ticketing system without exposing its API token. They define the required checks, tests, project layout, and rules for adding tools.

In plain words
What is it for?
Adding, changing, or reviewing pretix-agent-mcp code, especially named tools that expose pretix capabilities to agents.
Why use it?
They make the project’s security and quality requirements clear, reducing the risk of unsafe API access or changes that pass without adequate tests.

Instructions file for CodexOpenCode

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

This is bitcoinaustria/pretix-agent-mcp's own configuration. It tells Codex and OpenCode how to work on pretix-agent-mcp 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 pretix-agent-mcp configures →

Reuse

Borrowing it

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

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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<a href="https://agentmods.dev/instructions/bitcoinaustria/pretix-agent-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/bitcoinaustria/pretix-agent-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,785 This file is loaded in full into every session.
When invoked 1,785 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 $0.01785 $0.01785
Opus 5 $0.00892 $0.00892
Sonnet 5 $0.00357 $0.00357
Haiku 4.5 $0.00178 $0.00178

Measured 7d ago against content hash 7ac86f9ec932, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

pretix-agent-mcp 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 7d 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 · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Working in pretix-agent-mcp

An MCP server that lets AI agents administer a pretix instance without the pretix API token ever reaching the agent. What the project is and where it is going: PRD.md (product spec and north star) and README.md (operator-facing).

This file is the delta — what you cannot get from reading the code quickly.

Quality gates

make setup   # once
make ci      # ruff check + ruff format --check + pytest -q

make ci is exactly what CI runs, on Python 3.11 and 3.13. Line length 110. The test harness and what a change owes in tests: TESTING.md. No new runtime dependencies without a reason in the PR body — the current four are mcp, httpx, uvicorn, starlette.

Non-negotiables

These are the reason the project exists. A change that weakens one is wrong even if tests pass, and each is enforced by tests that will fail loudly:

  1. No generic HTTP/API/request tool, ever. Not "just for debugging", not behind a config flag. Every pretix capability is a named, schema'd tool.
  2. Every agent-supplied value that becomes a URL path segment is validated through validate.pyapp.check_event() for event slugs, object_id() for numeric ids, order_code() for order codes. This is what makes "arbitrary REST access is impossible" true, not a nicety.
  3. The pretix token never leaves the server: not in a result, an exception message, a log line, an audit record, or a tool parameter. Never interpolate the httpx client or its headers into a message.
  4. Defaults stay closed: localhost bind, read only, PII_MODE=redacted, no writes. Every relaxation is an explicit operator config change.
  5. Approval stays out of band. No tool may approve, or set the approval state of, a pending action — a prompt-injected agent would just call it. The CLI on the server is the only approval surface.
  6. Changes to validation, redaction, the capability gate, the approval store or auth need tests in the same PR. See TESTING.md.

Read the full file on GitHub · 121 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. 7d ago First seen · 121 lines · 1,785 tokens per session scan A 7ac86f9ec932

Subscribe to this mod's changes

pretix-agent-mcp AGENTS.md is an instructions file published in the GitHub repository bitcoinaustria/pretix-agent-mcp (0 stars, last pushed 15d ago), licensed MIT. It adds 1,785 tokens to every session, about $0.0089 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 2026-08-31.

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