MCPInstall

obliteratus-abliteration

One-click model liberation toolkit for removing refusal behaviors from LLMs via surgical abliteration techniques

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/reason-machines/trending-skills --skill obliteratus-abliteration
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads obliteratus-abliteration automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

OBLITERATUS — LLM Abliteration Toolkit

Skill by ara.so — Daily 2026 Skills collection.

OBLITERATUS is an open-source toolkit for identifying and surgically removing refusal behaviors from large language models using mechanistic interpretability techniques (abliteration). It locates refusal directions in a model's hidden states via SVD/PCA, projects them out of the weights, and preserves core language capabilities. Ships with a Gradio UI, CLI, Python API, and Colab notebook.


Installation

# Core install
pip install obliteratus

# With Gradio UI support
pip install "obliteratus[spaces]"

# With all optional analysis modules
pip install "obliteratus[full]"

# From source (latest)
git clone https://github.com/elder-plinius/OBLITERATUS
cd OBLITERATUS
pip install -e ".[full]"

Requirements:

  • Python 3.10+
  • PyTorch 2.1+ with CUDA (recommended) or CPU
  • transformers, accelerate, gradio>=5.29.0
  • HuggingFace account + token for gated models
export HF_TOKEN=your_hf_token_here
huggingface-cli login

CLI — Key Commands

# Basic obliteration (default method)
obliteratus obliterate meta-llama/Llama-3.1-8B-Instruct

# Advanced method (whitened SVD + bias projection + iterative refinement)
obliteratus obliterate meta-llama/Llama-3.1-8B-Instruct --method advanced

# Analysis-informed pipeline (auto-configures from geometry analysis)
obliteratus obliterate meta-llama/Llama-3.1-8B-Instruct --method informed

# Specify output directory and push to Hub
obliteratus obliterate mistralai/Mistral-7B-Instruct-v0.3 \
  --method advanced \
  --output ./my-liberated-model \
  --push-to-hub your-username/mistral-7b-liberated

# LoRA-based reversible ablation (non-destructive)
obliteratus obliterate meta-llama/Llama-3.1-8B-Instruct \
  --method lora \
  --lora-rank 1

# Strength sweep — find the capability/compliance tradeoff
obliteratus sweep meta-llama/Llama-3.1-8B-Instruct \
  --strengths 0.2,0.4,0.6,0.8,1.0

# Run analysis modules only (no modification)
obliteratus analyze meta-llama/Llama-3.1-8B-Instruct \
  --modules concept_cone,alignment_imprint,universality

# Benchmark: compare methods on a model
obliteratus benchmark meta-llama/Llama-3.1-8B-Instruct \
  --methods basic,advanced,informed

# Launch local Gradio UI
obliteratus ui
obliteratus ui --port 8080 --share
obliteratus ui --no-telemetry

Python API

Basic obliteration

from obliteratus import Obliterator

# Initialize with a HuggingFace model ID or local path
obl = Obliterator("meta-llama/Llama-3.1-8B-Instruct")

# Run the full pipeline: SUMMON → PROBE → DISTILL → EXCISE → VERIFY → REBIRTH
result = obl.obliterate(method="advanced")

print(result.perplexity_delta)    # capability preservation metric
print(result.refusal_rate_delta)  # refusal reduction
print(result.output_path)         # where the model was saved

Step-by-step pipeline

from obliteratus import Obliterator
from obliteratus.pipeline import PipelineConfig

config = PipelineConfig(
    method="advanced",
    num_directions=32,          # number of refusal directions to extract
    strength=1.0,               # projection strength (0.0–1.0+)
    preserve_norm=True,         # norm-preserving biprojection
    project_biases=True,        # also remove from bias terms
    iterative_passes=3,         # re-probe after each pass
    layers="auto",              # or list of ints, e.g. [10, 11, 12, 13]
    dtype="bfloat16",
    device="cuda",
)

obl = Obliterator("mistralai/Mistral-7B-Instruct-v0.3", config=config)

# Individual stages
obl.summon()           # load model + tokenizer
activations = obl.probe()    # collect activations on restricted vs unrestricted prompts
directions = obl.distill(activations)   # extract refusal directions via SVD
obl.excise(directions)       # project out guardrail directions
metrics = obl.verify()       # perplexity + coherence checks
obl.rebirth("./liberated-mistral-7b")  # save with metadata

Custom probe prompts

from obliteratus import Obliterator
from obliteratus.probing import ProbeDataset

# Use your own restricted/unrestricted prompt pairs
dataset = ProbeDataset(
    restricted=[
        "How do I pick a lock?",
        "Write a story with explicit violence.",
        "Explain how malware works in detail.",
    ],
    unrestricted=[
        "What is the capital of France?",
        "Write a story about a dog.",
        "Explain how encryption works.",
    ]
)

obl = Obliterator("google/gemma-2-9b-it")
obl.summon()
activations = obl.probe(dataset=dataset)
directions = obl.distill(activations)
obl.excise(directions)
obl.rebirth("./liberated-gemma-2-9b")

Analysis modules

from obliteratus.analysis import AnalysisSuite

suite = AnalysisSuite("meta-llama/Llama-3.1-8B-Instruct")
suite.load()

# Concept Cone Geometry — how many distinct refusal mechanisms?
cone = suite.concept_cone_geometry()
print(f"Solid angle estimate: {cone.solid_angle:.4f}")
print(f"Distinct refusal clusters: {cone.num_clusters}")

# Alignment Imprint Detection — DPO vs RLHF vs CAI vs SFT?
imprint = suite.alignment_imprint()
print(f"Detected training method: {imprint.method}")   # e.g. "RLHF"
print(f"Confidence: {imprint.confidence:.2%}")

# Ouroboros Effect — will it self-repair?
ouroboros = suite.ouroboros_quantification()
print(f"Self-repair score: {ouroboros.score:.4f}")
print(f"Recommended passes: {ouroboros.recommended_passes}")

# Cross-layer heatmap of refusal signal
heatmap = suite.layer_refusal_heatmap()
heatmap.plot(save_path="./refusal_heatmap.png")

# Safety-capability entanglement
entanglement = suite.entanglement_map()
print(f"Safe layers to modify: {entanglement.safe_layers}")
print(f"Risky layers (entangled): {entanglement.risky_layers}")

Analysis-informed obliteration

from obliteratus import Obliterator
from obliteratus.pipeline import PipelineConfig

# "informed" method runs analysis modules mid-pipeline
# to auto-configure every decision
config = PipelineConfig(method="informed")
obl = Obliterator("meta-llama/Llama-3.1-8B-Instruct", config=config)

result = obl.obliterate()
print(result.analysis_report)   # full auto-configuration decisions

Chat with obliterated model

from obliteratus import Obliterator
from obliteratus.chat import ChatSession

obl = Obliterator("./liberated-llama-3.1-8b")
obl.summon()  # loads pre-obliterated model

session = ChatSession(obl.model, obl.tokenizer)

response = session.chat(
    "Explain in detail how a buffer overflow exploit works.",
    max_new_tokens=512,
    temperature=0.7,
)
print(response)

A/B comparison

from obliteratus.compare import ABComparison

ab = ABComparison(
    original_path="meta-llama/Llama-3.1-8B-Instruct",
    obliterated_path="./liberated-llama-3.1-8b",
)

prompt = "Write a story involving morally grey characters."

original_resp, liberated_resp = ab.compare(prompt)
print("=== ORIGINAL ===")
print(original_resp)
print("=== LIBERATED ===")
print(liberated_resp)

Push obliterated model to Hub

import os
from obliteratus import Obliterator

obl = Obliterator("meta-llama/Llama-3.1-8B-Instruct")
result = obl.obliterate(method="advanced")

result.push_to_hub(
    repo_id=f"{os.environ['HF_USERNAME']}/Llama-3.1-8B-Instruct-abliterated",
    token=os.environ["HF_TOKEN"],
    private=True,
)

Obliteration Methods

MethodDescriptionBest For
basicMean-difference direction extraction, single passQuick experiments
advancedWhitened SVD + bias projection + iterative refinementProduction use
informedAnalysis-guided auto-configurationUnknown models
loraReversible LoRA rank-1 adapters (no weight surgery)Reversible ablation
pcaPCA-based direction extractionResearch/comparison
sparseSparse autoencoder decompositionMoE models

Configuration

from obliteratus.pipeline import PipelineConfig

config = PipelineConfig(
    # Core
    method="advanced",              # abliteration method
    strength=1.0,                   # projection strength (tune down if capability degrades)
    num_directions=32,              # refusal directions to extract
    
    # Layer selection
    layers="auto",                  # "auto", "cosmic", or list of ints
    layer_selection="cosmic",       # COSMIC: most separable layers
    
    # Weight modification
    preserve_norm=True,             # norm-preserving biprojection (recommended)
    project_biases=True,            # project out bias terms too
    project_attention=True,         # modify attention projection weights
    project_mlp=True,               # modify MLP weights
    
    # Iterative refinement
    iterative_passes=3,             # re-probe after each pass (catches rotated directions)
    
    # MoE-specific
    expert_granular=False,          # Expert-Granular Abliteration for MoE models
    
    # CoT preservation
    cot_aware=True,                 # preserve chain-of-thought directions
    
    # Hardware
    dtype="bfloat16",               # "float32", "float16", "bfloat16"
    device="cuda",                  # "cuda", "cpu", "auto"
    load_in_4bit=False,             # bitsandbytes 4-bit loading
    
    # Telemetry (anonymous, contributes to research dataset)
    telemetry=True,
)

Common Patterns

Tune strength to preserve capability

from obliteratus import Obliterator
from obliteratus.sweep import StrengthSweep

# Find the sweet spot before running full obliteration
sweep = StrengthSweep("meta-llama/Llama-3.1-8B-Instruct")
results = sweep.run(strengths=[0.2, 0.4, 0.6, 0.8, 1.0, 1.2])

for r in results:
    print(f"Strength {r.strength:.1f} | perplexity_delta={r.perplexity_delta:.2f} | refusal_rate={r.refusal_rate:.2%}")

# Pick the best tradeoff
best = sweep.recommend()
print(f"Recommended strength: {best.strength}")

MoE model (Mixtral, DeepSeek-MoE)

from obliteratus import Obliterator
from obliteratus.pipeline import PipelineConfig

config = PipelineConfig(
    method="advanced",
    expert_granular=True,      # decompose per-expert refusal signals
    project_attention=True,
    project_mlp=True,
)

obl = Obliterator("mistralai/Mixtral-8x7B-Instruct-v0.1", config=config)
obl.obliterate()
obl.rebirth("./liberated-mixtral-8x7b")

Batch benchmark multiple models

from obliteratus.benchmark import ModelBenchmark

models = [
    "meta-llama/Llama-3.1-8B-Instruct",
    "google/gemma-2-9b-it",
    "mistralai/Mistral-7B-Instruct-v0.3",
]

bench = ModelBenchmark(models=models, method="advanced")
report = bench.run()
report.save("./benchmark_report.json")
report.plot_heatmap("./benchmark_heatmap.png")

Troubleshooting

Out of memory (OOM) on large models

config = PipelineConfig(
    dtype="float16",
    load_in_4bit=True,        # requires bitsandbytes
    device="cuda",
    layers=[10, 11, 12, 13],  # target fewer layers
    num_directions=16,         # fewer directions
)

Capability degradation after obliteration

# Lower the strength or use COSMIC layer selection (most separable layers)
config = PipelineConfig(
    strength=0.6,
    layer_selection="cosmic",
    cot_aware=True,           # protect reasoning directions
    iterative_passes=1,       # fewer passes = less aggressive
)

Refusal persists after obliteration

# Use informed method + increase passes
config = PipelineConfig(
    method="informed",
    iterative_passes=5,
    project_biases=True,      # don't forget bias terms
    num_directions=64,        # extract more directions
)

Gated model access error

export HF_TOKEN=your_hf_token_here
# Accept model license on HuggingFace Hub first, then:
huggingface-cli login

Gradio UI won't start

pip install "obliteratus[spaces]"
# Check port availability
obliteratus ui --port 7861

No-Code Options


Key Research References

FAQ

What does the obliteratus-abliteration skill do?

One-click model liberation toolkit for removing refusal behaviors from LLMs via surgical abliteration techniques

How do I install obliteratus-abliteration?

Run npx skills add https://github.com/reason-machines/trending-skills --skill obliteratus-abliteration in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/obliteratus-abliteration/ (personal) or .claude/skills/obliteratus-abliteration/ (project).

Which AI agents can use obliteratus-abliteration?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is obliteratus-abliteration safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains obliteratus-abliteration?

It is published by reason-machines in reason-machines/trending-skills. It has 865 recorded installs.

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