Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/openai/codex/remote-testsnpx skills add openai/codex --skill remote-testsgit clone --depth 1 https://github.com/openai/codexWhat 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 | $0.00012 | $0.00786 |
| Opus 5 | $0.00006 | $0.00393 |
| Sonnet 5 | $0.00002 | $0.00157 |
| Haiku 4.5 | $0.00001 | $0.00079 |
Grade A, and why
remote-tests 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 2d 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.
Copies of this mod
6 near-identical copies found in the catalogue:
- remote-tests — 100% identical, 0 lines differ
- remote-tests — 100% identical, 0 lines differ
- remote-tests — 100% identical, 0 lines differ
- remote-tests — 100% identical, 0 lines differ
- remote-tests — 100% identical, 0 lines differ
- remote-tests — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Remote executor tests exercise the app-server/exec-server split to ensure that agent features work in both local and remote execution environments.
Remote executor tests currently require an x86_64 Linux host machine. There are two flavors:
- Docker (Linux exec-server)
- Wine (Windows exec-server)
Test Fixtures
Individual test cases must opt-in to being run against a remote executor.
codex_core
Use TestCodexBuilder::build_with_auto_env() to opt-in to remote execution in core integration
tests unless the test needs more precise control over its executor.
app-server
Start the server with TestAppServer::new_with_auto_env() unless the test defines its own
$CODEX_HOME/environments.toml or will define custom environments at runtime.
Start threads with TestAppServer::send_thread_start_request_with_auto_env() if you've created the
server with the auto_env approach. Omit ThreadStartParams.environments (leave it as None) when
doing so.
Test Skips
If a test doesn't pass in a particular remote executor configuration you can skip it in just that configuration. Include a string reason for future readers when the selected skip macro supports one.
Choose the skip macro by what causes the test to fail:
skip_if_target_windows!: Windows target behavior.skip_if_wine_exec!: Wine-exec runner constraints.skip_if_host_windows!: Windows host constraints.skip_if_remote!: Local-only test behavior.skip_if_no_remote_env!: Remote-only test behavior.
Prefer defining tests that run in all host/target configurations by default. See the $path-types
skill for the most common changes required to make tests compatible.
Docker
Docker container is built and initialized via ./scripts/test-remote-env.sh. Sourcing this script
in bash also provides the codex_remote_env_cleanup function to use after testing.
To run core integration tests against a Docker remote executor:
bash -c '
set -euo pipefail
unset CODEX_TEST_REMOTE_EXEC_SERVER_URL
source scripts/test-remote-env.sh
trap codex_remote_env_cleanup EXIT
cd codex-rs
just test -p codex-core --test all
'
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.
- 2d ago First seen · 107 lines · 12 tokens per session scan A 5029f27ab93f
remote-tests is a skill published in the GitHub repository openai/codex (120,598 stars, last pushed today), licensed Apache-2.0. It adds 12 tokens to every session and 786 once invoked, about $0.0001 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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