# weighted_average_gas_sg

A read tool on the pyResToolbox MCP Server MCP server.

Agent View of the PolicyLayer registry record for `weighted_average_gas_sg`. HTML page: https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/weighted-average-gas-sg

## Facts

- Tool: `weighted_average_gas_sg`
- Server: pyResToolbox MCP Server (`gabrielserrao/pyrestoolbox-mcp`) — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp.md
- Homepage: https://github.com/gabrielserrao/pyrestoolbox-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "weighted_average_gas_sg",
    "arguments": {}
  }
}
```

## Why weighted_average_gas_sg is rated Low

The tool name implies a mathematical calculation (weighted average) of gas specific gravity, which is a read-only computation. No description is provided, which lowers confidence. Based on the server context (petroleum engineering calculations) and sibling tools that perform PVT analysis and similar calculations, this tool likely computes a value without modifying any data.

From the tool's own definition: "Tool name 'weighted_average_gas_sg' suggests a calculation/computation of a weighted average specific gravity for gas, which is a read/query operation with no side effects."

## Use case

AI agents call weighted_average_gas_sg to retrieve information from pyResToolbox MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches pyResToolbox MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "weighted_average_gas_sg": {}
  }
}
```

## Other tools on pyResToolbox MCP Server (107)

- `arps_rate` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/arps-rate.md
- `decline_forecast` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/decline-forecast.md
- `duong_rate` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/duong-rate.md
- `fit_decline` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/fit-decline.md
- `fit_decline_cumulative` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/fit-decline-cumulative.md
- `fit_relative_permeability` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/fit-relative-permeability.md
- `flowing_bhp` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/flowing-bhp.md
- `gas_pseudopressure` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/gas-pseudopressure.md
- `gas_rate_radial` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/gas-rate-radial.md
- `geomech_breakout_stress_inversion` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/geomech-breakout-stress-inversion.md
- `geomech_critical_mud_weight_collapse` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/geomech-critical-mud-weight-collapse.md
- `geomech_fault_stability` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/geomech-fault-stability.md
- `geomech_hydraulic_fracture_width` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/geomech-hydraulic-fracture-width.md
- `geomech_reservoir_compaction` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/geomech-reservoir-compaction.md
- `geomech_sand_production` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/geomech-sand-production.md
- `oil_material_balance` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/oil-material-balance.md
- `oil_rate_radial` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/oil-rate-radial.md
- `operating_point` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/operating-point.md
- `parameter_sweep` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/parameter-sweep.md
- `rachford_rice_flash` — Execute — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/rachford-rice-flash.md
- `beta_to_lorenz` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/beta-to-lorenz.md
- `create_oil_pvt` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/create-oil-pvt.md
- `evaluate_jerauld` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/evaluate-jerauld.md
- `evolved_gas_sg` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/evolved-gas-sg.md
- `fit_ratio` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/fit-ratio.md
- `gas_fws_sg` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/gas-fws-sg.md
- `generate_aquifer_influence` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/generate-aquifer-influence.md
- `generate_black_oil_table` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/generate-black-oil-table.md
- `generate_black_oil_table_og` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/generate-black-oil-table-og.md
- `generate_layer_distribution` — Other — https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp/generate-layer-distribution.md
- …and 77 more: https://policylayer.com/tools/gabrielserrao-pyrestoolbox-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=gabrielserrao-pyrestoolbox-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/gabrielserrao-pyrestoolbox-mcp