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Nethermind/Mpt-Instruct-DotNet-XS warn

Weights only ship in a format that can run code when loaded; loading it runs custom code from the repo; glitch tokens that can silently corrupt ordinary input. Plus 1 minor note.

downloads 35likes 0license cc-by-sa-3.0arch mosaic_gptupdated 2023-09-11

chat template: not found · view on Hugging Face ↗

Scan coverageStatic battery2026-08-27Weights battery2026-08-27Behavioral batterynot rundetails
BatteryLooks atStatus
Static batteryMetadata & packagingcomplete 2026-08-27
Weights batteryWeights forensics: no GPU, no downloadcomplete 2026-08-2750,432-token embedding scanned · 2009 undertrained · pickle audit clean
Behavioral batteryLive-inference differentialsnot run

Ingot runs three batteries against a model. What each one checks →

Findings

Scanned 2026-08-27 · published from a community scan.

medium Pickle-serialized weights, no safetensors

Weights ship only as pickle-based files (ggml-model-f16.bin, ggml-model-q8_0.bin, pytorch_model.bin). Loading pickle executes arbitrary code from the file — prefer a safetensors release or load in a sandbox.

How to fix

Convert the weights to safetensors before loading them anywhere that matters.

  1. Do not load the pickle files in-process — pickle deserialization executes arbitrary code from the file.
  2. Convert locally in a sandbox: `pip install safetensors` and use `safetensors.torch.save_file` on a state dict loaded with `torch.load(..., weights_only=True)` (refuses most code-execution payloads), or use Hugging Face's `convert.py` space/script.
  3. Pin the exact revision hash you converted from, and load only your converted safetensors artifact from then on.

medium Repo ships executable Python (trust_remote_code)

The repository contains custom code files that run in-process when loaded with trust_remote_code=True. Pin the revision hash and review the code before loading.

How to fix

Review and pin the custom code; never float on `main` with trust_remote_code=True.

  1. Read every `.py` file in the repo before first load — this code runs in your process.
  2. Pin the revision: `from_pretrained(model_id, revision="<commit sha>", trust_remote_code=True)` so a later push can't swap the code under you.
  3. Prefer a version of the architecture already in `transformers` if one exists, which removes the remote-code requirement entirely.

medium Undertrained (glitch) token surface in vocabulary

Embedding-norm scan flagged 2009 undertrained tokens (norm < 0.3× the vocabulary median of 7.896), including 214 plain-ASCII strings that can appear in ordinary input as identifiers — e.g. "amssymb", "columnwidth", "gtrsim", "mathtt", "lVert", "mathit", "xrightarrow", "lceil". In models where this class was tested behaviorally, such tokens silently rewrote user input into confident, schema-valid, wrong output. These are candidates from the weights alone; behavioral confirmation requires the behavioral battery.

How to fixruntime guardweight-level

Keep the affected token strings out of the model's input — the scan-derived runtime guard carries this model's exact blocklist.

  1. Fetch this model's guard artifact (`/api/v1/guard/<owner>/<model>`): the confirmed corrupting tokens and the low-norm candidate list, derived from the published scan.
  2. Screen inbound text with it (the `@ingotai/guard` package is a reference implementation) and route flagged records to a different model or human review — verbatim-copy tasks on flagged strings are the failure mode.
  3. The underlying cause is undertrained embeddings in the weights; a true fix is weight-level (continued pretraining on the affected tokens) — that is not a patch, it's a training job.

info Pickle static analysis clean

Opcode-level parse of pytorch_model.bin, ggml-model-f16.bin, ggml-model-q8_0.bin (no code executed) found only standard serialization globals (3 distinct, all torch/collections/numpy). Pickle remains an executable format — this verifies the current bytes, not future uploads; prefer a safetensors release.

low Pickle checkpoint only partially analyzable

Static analysis could not fully parse: ggml-model-f16.bin: legacy parse stopped after 0 pickle(s): pickle: no MARK, ggml-model-q8_0.bin: legacy parse stopped after 0 pickle(s): pickle: no MARK. Unparsed content is unverified.

Remediation guidance addresses the documented findings only. It is evidence-driven repair, not a safety certification of the model.

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The durable profile of this model: measured weights-and-metadata facts, rebuilt on every scan and battery run. Updated 2026-08-27.

architecturemosaic_gpt · 2048-dim
vocabulary50,432 tokens
licensecc-by-sa-3.0
serializationno safetensors pickle custom code
chat templatenone
glitch-token surface2,009 undertrained candidates, 214 plain-ASCII
Full measured fingerprint
architecturesMosaicGPT
librarytransformers
pipelinetext-generation
repo files16 — pickle: ggml-model-f16.bin, ggml-model-q8_0.bin, pytorch_model.bin
revision56d7c99e63cd
HF snapshot12 downloads · 0 likes · updated 2023-09-11 · captured 2026-08-25
pickle auditpytorch_model.bin, ggml-model-f16.bin, ggml-model-q8_0.bin — 3 standard global(s) · legacy (pre-1.6) format, head-scan only
embedding tensortransformer.wte.weight · BF16 · 50,432×2048
embedding normsmedian 7.8964 · mean 7.4753
lineage checkno claimed base model
glitch-token samples"amssymb", "columnwidth", "gtrsim", "mathtt", "lVert", "mathit", "xrightarrow", "lceil", "overrightarrow", "geqslant", "biggl", "usepackage"
Battery runs (1)the run trace behind the findings — what each job measured
batterystatusqueueddurationattempts
weightscomplete2026-08-25 22:4419s1
weights run 2026-08-25 — measurements
probes runglitch-norm-scan, zero-template-token-scan, pickle-static-analysis, lineage-norm-correlation
embedding tensortransformer.wte.weight · BF16 · 50,432×2048
glitch surface2,009 undertrained, 214 plain-ASCII
lineage checknot checked (no claimed base model)

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Ingot verdict: warn

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