Crispr guide design

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name: crispr-guide-design description: Guide foundry keywords:

• CRISPR
• sgRNA
• Doench
• off-target
• oligos measurable_outcome: Return the requested number of guides (default ≥4) with efficiency + specificity scores, coordinates, and cloning oligos within 10 minutes per gene. license: MIT metadata: author: CRISPR-GPT Team version: "1.0.0" compatibility:
• system: Python 3.10+ allowed-tools:
• run_shell_command
• read_file

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CRISPR Design Agent

Automate sgRNA selection, scoring, off-target evaluation, and oligo generation for CRISPR experiments using the documented workflow.

When to Use

• Designing CRISPR knockout/knock-in experiments that need validated guides.
• Locating all PAM-compatible target sites in a gene or locus.
• Filtering guides by efficiency/off-target metrics before cloning.

Core Capabilities

1. Target discovery: Scan sequences for PAM motifs (e.g., NGG).
2. Efficiency scoring: Evaluate GC content, homopolymers, Doench/DeepCRISPR/CFD scores.
3. Filtering & ranking: Remove risky guides (SNP overlap, off-target hits) and output the best candidates.

Workflow

1. Resolve gene symbol + organism to canonical transcript coordinates and target region.
2. Enumerate PAM-compatible sites; extract spacers for the chosen Cas variant.
3. Score guides (efficiency + specificity) and compute GC metrics.
4. Run off-target search (≤3 mismatches) to flag problematic loci.
5. Filter/rank guides, generate cloning oligos/primers, and emit JSON/CSV outputs with coordinates.

Example Usage

python3 Skills/Genomics/CRISPR_Design_Agent/crispr_designer.py \
    --sequence "ATGGAGGAGCCGCAGTCAGATCCTAGCGTCGAGCCCCCTCTGAGTCAGGAAACATTTTCAGACCTATGGAAACTGTGAGTGGATCCATTGGAAGGGC" \
    --output guides.json

Guardrails

• Always state genome build and Cas variant assumptions.
• Avoid guides overlapping common SNPs when avoid_variants is true.
• Flag high off-target density near coding regions for manual review.

References

• See README.md and prompt.md for detailed schema plus supporting literature.

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