molclaw-protein-structure-retrieve

molclaw-protein-structure-retrieve is a skill for Claude Code, Codex from InternScience/MolClaw. It costs 39 tokens per session (862 once invoked), scanned A, original, MIT.

A workflow for finding and downloading a protein structure file in PDB or CIF format. It accepts a gene name, UniProt ID, or PDB ID; UniProt is a database of protein information, while PDB is a database and file format for three-dimensional structures.

In plain words
What is it for?
Retrieving a structure by gene name, including the organism and preferred sorting method, or by another supported protein identifier. The result is a path to the downloaded structure file.
Why use it?
It removes the need to search several biological databases manually before starting structure-based analysis. The chosen structure can be ranked by sequence coverage or experimental resolution.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Retrieving a structure by gene name, including the organism and preferred sorting method, or by another supported protein identifier. The result is a path to the downloaded structure file.

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Install with agentmods
npx agentmods add skills/internscience/molclaw/molclaw-protein-structure-retrieve
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add InternScience/MolClaw --skill molclaw-protein-structure-retrieve
Clone the repo
git clone --depth 1 https://github.com/InternScience/MolClaw

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for molclaw-protein-structure-retrieve

README.md
[![agentmods](https://agentmods.dev/badge/skills/internscience/molclaw/molclaw-protein-structure-retrieve/github.svg)](https://agentmods.dev/skills/internscience/molclaw/molclaw-protein-structure-retrieve)
Your own site
<a href="https://agentmods.dev/skills/internscience/molclaw/molclaw-protein-structure-retrieve"><img src="https://agentmods.dev/badge/skills/internscience/molclaw/molclaw-protein-structure-retrieve/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/internscience/molclaw/molclaw-protein-structure-retrieve"><img src="https://agentmods.dev/badge/skills/internscience/molclaw/molclaw-protein-structure-retrieve.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 862 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.00862
Opus 5 $0.00019 $0.00431
Sonnet 5 $0.00008 $0.00172
Haiku 4.5 $0.00004 $0.00086

Measured 9d ago against content hash 2ff7ce0e7956, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

molclaw-protein-structure-retrieve scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/L1_tools/molclaw-protein-structure-retrieve/SKILL.md · 102 lines

What it actually says

Retrieve Protein Structure

Note:

  • Local files are not directly accessible by the server. Please upload them to the server using molclaw-file-transfer before execution.
  • For PDB file inputs, it is recommended to preprocess them using molclaw-pdbfixer before execution.
  • Please refer to skill molclaw-scp-server to complete tool invocation.

Scene 1: If the gene name is provided, please use tool retrieve_protein_structure_by_gene_name.

The description of tool retrieve_protein_structure_by_gene_name.

Retrieve and download a protein structure (.pdb or .cif) using a standard gene name.
Args:
    gene_name (str): Input gene name (e.g., 'TP53')
    organism (str): Required species NCBI Taxonomy ID (use 9606 for human or 10090 for mouse)
    sort_by (str): Required sorting strategy: 'length' prioritizes sequence coverage; 'resolution' prioritizes structural resolution.
Return:
    status (str): success/error
    msg (str): message
    prot_structure_path (str): Path to the downloaded .pdb or .cif structure file

How to use tool retrieve_protein_structure_by_gene_name :

response = await client.session.call_tool(
    "retrieve_protein_structure_by_gene_name",
    arguments={
        "gene_name": gene_name,
        "organism": "9606",
        "sort_by": "length"
    }
)
result = client.parse_result(response)
prot_structure_path = result["prot_structure_path"]

Scene 2: If the UniProt ID is provided, please use tool retrieve_protein_structure_by_uniprot_id.

The description of tool retrieve_protein_structure_by_uniprot_id.

Retrieve and download a protein structure (.pdb or .cif) using a UniProt ID.
Args:
    uniprot_id (str): Input uniprot id (e.g., 'P04637')
    sort_by (str): Required sorting strategy: 'length' prioritizes sequence coverage; 'resolution' prioritizes structural resolution.
Return:
    status (str): success/error
    msg (str): message
    prot_structure_path (str): Path to the downloaded .pdb or .cif structure file

How to use tool retrieve_protein_structure_by_uniprot_id :

response = await client.session.call_tool(
    "retrieve_protein_structure_by_uniprot_id",
    arguments={
        "uniprot_id": uniprot_id,
        "sort_by": "length"
    }
)
result = client.parse_result(response)
prot_structure_path = result["prot_structure_path"]

Scene 3: If the PDB ID is provided, please use tool retrieve_protein_structure_by_pdb_id.

The description of tool retrieve_protein_structure_by_pdb_id.

Retrieve and download a protein structure using a PDB ID. The service tries .pdb first and automatically falls back to .cif when needed.
Args:
    pdb_id (str): Input pdb id (e.g., "2l3r", "5XYF")
Return:
    status (str): success/error
    msg (str): message
    prot_structure_path (str): Path to the downloaded .pdb or fallback .cif structure file

How to use tool retrieve_protein_structure_by_pdb_id :

response = await client.session.call_tool(
    "retrieve_protein_structure_by_pdb_id",
    arguments={
        "pdb_id": pdb_id
    }
)
result = client.parse_result(response)
prot_structure_path = result["prot_structure_path"]
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 102 lines · 39 tokens per session scan A 2ff7ce0e7956

Subscribe to this mod's changes

molclaw-protein-structure-retrieve is a skill published in the GitHub repository InternScience/MolClaw (33 stars, last pushed 1mo ago), licensed MIT. It adds 39 tokens to every session and 862 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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