MoleculeSAFE
A model-context-protocol server for molecules.
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
Molecule-MCP: A model-context-protocol server for molecules. Molecule-MCP connects molecule science releated tools to Claude AI through the Model Context Protocol (MCP), allowing Claude to directly interact with and control these tools and act as a co-scientist. This integration enables prompt assisted molecule modeling.
Installation
⚠️ Note: Molecule-MCP requires Claude Desktop to be installed and running.
- Go to Claude > Settings > Developer > Edit Config > claudedesktopconfig.json to include the following:
{
"mcpServers": {
"pymol": {
"command": "/path/to/mcp",
"args": [
"run",
"/path/to/molecule-mcp/pymol_server.py"
]
},
"chimerax": {
"command": "/path/to/mcp",
"args": [
"run",
"/path/to/molecule-mcp/ChimeraX_server.py"
]
},
"gromacs_copilot": {
"command": "/path/to/mcp",
"args": [
"run",
"/path/to/molecule-mcp/mcp_server.py"
]
}
}
}- Install mcp and get the script
pip install "mcp[cli]" chatmol pip install git+https://github.com/ChatMol/gromacs_copilot.git # optional, for running gromacs_copilot which mcp
the path to mcp will be displayed. Copy this path for the next step and replace /path/to/mcp with the path to mcp.
git clone https://github.com/ChatMol/molecule-mcp.git cd molecule-mcp pwd
the path to molecule-mcp will be displayed. Copy this path for the next step and replace /path/to/molecule-mcp with the path to molecule-mcp.
Disclaimer
Molecule-MCP is provided "as is" without warranty of any kind, express or implied. The authors and contributors disclaim all warranties including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Users employ this software at their own risk.
The authors bear no responsibility for any consequences arising from the use, misuse, or mi
57fe67d7ed5bOBSERVED · 2026-10-07Exposed tools (29)
15 read · 14 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
add_ions | write | |
analyze_gyration | read | |
analyze_ligand_rmsd | read | |
analyze_protein_ligand_contacts | read | |
analyze_rmsd | read | |
analyze_rmsf | read | |
check_for_ligands | read | |
check_gromacs_installation | read | |
create_mdp_file | write | |
create_mmpbsa_index_file | write | |
define_simulation_box | read | |
generate_topology | read | |
get_workspace_info | read | |
init_gromacs_copilot | read | |
open_chimerax | read | open chimerax with remote control enabled |
open_pymol | read | open pymol |
run_chimerax_command | write | run chimerax command |
run_energy_minimization | write | |
run_npt_equilibration | write | |
run_nvt_equilibration | write | |
run_production_md | write | |
run_pymol_command | write | run pymol command |
run_shell_command | write | |
save_imgae | write | save current view of pymol session to a file, perferably .png |
set_ligand | write | |
set_protein_file | write | |
set_simulation_stage | write | |
solvate_system | read | |
switch_agent_protocol | read |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | WARN |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- declared (1 observation(s))
- Shell
- declared (1 observation(s))
- Dependencies
- pinned
- Secrets in source
- none-found
Findings (2)
s = ServerProxy(uri="http://127.0.0.1:%d/RPC2" % xmlrpc_port)
assets/chimerax.jpg
Gates applied: no_behavioural_pass.
57fe67d7ed5bfull audit observations/trust-audit/mcp-server/chatmol__molecule.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-07 | 57fe67d7ed5b | SAFE | B | 89 | first audit |
Questions
What is the Molecule MCP server?
A model-context-protocol server for molecules.
What tools does Molecule expose?
29 in total: 15 read-only, 14 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is Molecule safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does Molecule need?
No credential environment variables were found in its source, so it appears to need none.
How current is this page?
The grade is for one exact copy of the source (57fe67d7ed5b), read on 2026-10-07. The repository is watched and re-audited when it changes.