# sympy_ratsimp

Simplify rational expressions.

Agent View of the PolicyLayer registry record for `sympy_ratsimp`. HTML page: https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-ratsimp

## Facts

- Tool: `sympy_ratsimp`
- Server: Pypi:mcp Sympy (`pypi:mcp-sympy`) — https://policylayer.com/tools/io-github-daedalus-mcp-sympy.md
- Install: `npx -y pypi:mcp-sympy`
- Homepage: https://github.com/daedalus/mcp-sympy
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why sympy_ratsimp is rated High

This tool executes a symbolic computation (rational simplification) via SymPy. It does not read from or write to external data stores, and has no destructive or financial effects. It runs mathematical processing on the provided expression, making Execute the most appropriate category. Severity is low since it only performs local math computations with no external side effects.

From the tool's own definition: "Simplify rational expressions"

## Use case

AI agents invoke sympy_ratsimp to trigger actions in Pypi:mcp Sympy. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Pypi:mcp Sympy:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "sympy_ratsimp": {
      "limits": [
        {
          "counter": "sympy_ratsimp_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Pypi:mcp Sympy (170)

- `sympy_cancel` — Destructive — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-cancel.md
- `sympy_abs` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-abs.md
- `sympy_And` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-and.md
- `sympy_apart` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-apart.md
- `sympy_asin` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-asin.md
- `sympy_cbrt` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-cbrt.md
- `sympy_cosh` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-cosh.md
- `sympy_derivative` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-derivative.md
- `sympy_diff` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-diff.md
- `sympy_dsolve` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-dsolve.md
- `sympy_erf` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-erf.md
- `sympy_evalf` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-evalf.md
- `sympy_evaluate` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-evaluate.md
- `sympy_exp` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-exp.md
- `sympy_expand` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-expand.md
- `sympy_expand_complex` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-expand-complex.md
- `sympy_factor` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-factor.md
- `sympy_factorial` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-factorial.md
- `sympy_factorint` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-factorint.md
- `sympy_finiteset` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-finiteset.md
- `sympy_float` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-float.md
- `sympy_gamma` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-gamma.md
- `sympy_gcd` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-gcd.md
- `sympy_groebner` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-groebner.md
- `sympy_horner` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-horner.md
- `sympy_integrate` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-integrate.md
- `sympy_lcm` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-lcm.md
- `sympy_limit` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-limit.md
- `sympy_log` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-log.md
- `sympy_log_base` — Execute — https://policylayer.com/tools/io-github-daedalus-mcp-sympy/sympy-log-base.md
- …and 140 more: https://policylayer.com/tools/io-github-daedalus-mcp-sympy.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=io-github-daedalus-mcp-sympy · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-daedalus-mcp-sympy