custom-noise SKILL.md skillA
custom-noise from qutone/lightstim is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add qutone/lightstim/custom-noise@git:20260902.f3fe164Pins git:20260902.f3fe164 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- qutone/lightstim
- Path
skills/custom-noise/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260902.f3fe164, committed Sep 2, 2026
- First version recorded
- May 14, 2026
- Size
- 5,003 bytes
- Repository stars
- 50
- License
- a license file GitHub does not identify
Configure noise models and error rates for LightStim experiments. Use this skill whenever the user asks about noise models, setting physical error rates, choosing between circuit_level / circuit_level_with_idling / phenomenological / code_capacity / XZ_biased noise, biased noise for neutral atom or trapped ion hardware, or wants to understand how noise is applied to a circuit. Also trigger when the user asks "what p should I use?" or "how do I add noise to my circuit?".
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Custom Noise Model
LightStim separates circuit construction from noise injection. Build the
noiseless circuit first (via `builder.build_noisy_circuit`), then inject noise
as a post-processing step. The clean circuit remains available in `builder.circuit`.
## The injection API
```python
noisy_circuit = builder.build_noisy_circuit(
noise_params, # NoiseConfig instance
noise_model, # str — strategy name, see table below
)
# Returns a new stim.Circuit. Does NOT modify builder.circuit in place.
```
## `NoiseConfig` fields
```python
from lightstim.noise.config import NoiseConfig
noise = NoiseConfig(
p_1q=1e-3, # Depolarizing after single-qubit gates (H, S, ...)
p_2q=1e-3, # Depolarizing after two-qubit gates (CX, CZ, ...)
p_meas=1e-3, # Measurement bit-flip probability
p_reset=1e-3, # State-preparation bit-flip probability
p_idle=0, # Placement depends on the selected noise model
custom_params={}, # Arbitrary extra rates for XZ_biased or custom rules
)
```
Unused fields default to 0. Set only the fields the target noise model uses.
## Noise model strategies
| Strategy | Injects | Relevant params | Use for |
…Read the whole file at its exact version.
How to install
mdr add qutone/lightstim/custom-noise@sha256:cf6772ee967bf3a8The line at the top of this page pins the label git:20260902.f3fe164, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_l7hzbwgkwqb4wxs6)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 14, 2026 and Sep 2, 2026, about one every 28 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260902.f3fe164 latest | 2026-09-02 | f3fe164 | 5,003 B | A | view · diff |
| git:20260902.93b408e | 2026-09-02 | 93b408e | 5,003 B | A | view · diff |
| git:20260526.75df926 | 2026-05-26 | 75df926 | 4,274 B | A | view · diff |
| git:20260526.5b92aea | 2026-05-26 | 5b92aea | 4,123 B | A | view · diff |
| git:20260514.9fcb9fa | 2026-05-14 | 9fcb9fa | 2,290 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5003 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
qutone/lightstim · 50 stars · license a license file GitHub does not identify · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_l7hzbwgkwqb4wxs6 GET https://markdownregistry.com/api/v1/resolve?ref=qutone/lightstim/custom-noise GET https://markdownregistry.com/api/v1/blob/cf6772ee967bf3a800682f002c0b41dc8314cda9310ac06f565d7af91f6c817a
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.