simulate-decode SKILL.md skillA
simulate-decode 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/simulate-decode@git:20260527.7059914Pins git:20260527.7059914 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- qutone/lightstim
- Path
skills/simulate-decode/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260527.7059914, committed May 27, 2026
- First version recorded
- May 14, 2026
- Size
- 6,041 bytes
- Repository stars
- 50
- License
- a license file GitHub does not identify
Run a LightStim circuit through the simulation pipeline and extract logical error rates. Use this skill whenever the user asks to simulate a circuit, get LER vs physical error rate, run PyMatching or BPOSD or MWPF decoding, sweep noise parameters, benchmark a code's threshold, plot logical error rates, configure post-selection (for state injection or distillation), or target specific logical observables in a multi-qubit 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
# Simulate and Decode
Takes a noisy `stim.Circuit` and runs it through `SimulationPipeline`.
## Step 0: Get a noisy circuit
```python
# From CircuitBuilder (custom protocol):
noisy = builder.build_noisy_circuit(NoiseConfig(p_2q=1e-3, p_meas=1e-3), "circuit_level")
# From any experiment class:
noisy = experiment.build() # already returns noisy circuit
```
## `SimulationPipeline` API
```python
from lightstim.simulation.decoder_backend import SimulationPipeline, DecoderConfig
pipeline = SimulationPipeline(
decoder_config=DecoderConfig("pymatching"), # see decoder table below
max_errors=200, # primary stopping criterion: stop after N logical errors
max_shots=1_000_000, # hard cap on total shots
batch_size=10_000, # shots per batch
num_workers=4, # parallel CPU processes
print_progress=False,
)
stats = pipeline.run(noisy_circuit)
print(stats.logical_error_rate) # errors / post_selected_shots
print(stats.ler_error_bar()) # 95% Wilson CI half-width (z=1.96)
print(stats.ler_error_bar(z=1.0)) # 1-sigma half-width
print(stats.shots) # total shots attempted
…Read the whole file at its exact version.
How to install
mdr add qutone/lightstim/simulate-decode@sha256:ef4a445e598aea5fThe line at the top of this page pins the label git:20260527.7059914, 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_nk3r5mdthgw2brn7)
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Versions
The registry has recorded 5 versions of this file, between May 14, 2026 and May 27, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260527.7059914 latest | 2026-05-27 | 7059914 | 6,041 B | A | view · diff |
| git:20260526.75df926 | 2026-05-26 | 75df926 | 4,948 B | A | view · diff |
| git:20260526.5b92aea | 2026-05-26 | 5b92aea | 4,851 B | A | view · diff |
| git:20260520.26da6bb | 2026-05-20 | 26da6bb | 2,368 B | A | view · diff |
| git:20260514.9fcb9fa | 2026-05-14 | 9fcb9fa | 2,225 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 (6041 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_nk3r5mdthgw2brn7 GET https://markdownregistry.com/api/v1/resolve?ref=qutone/lightstim/simulate-decode GET https://markdownregistry.com/api/v1/blob/ef4a445e598aea5f20e4af328589a6b90018867e78001c3c64bfc458e4998c02
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.