TrustModel

Score any AI for trust across 10 dimensions — Eval, Monitor, Govern.

One toolkit, three open products + the official cloud client, one free API key. Eval your AI · Monitor it in production · Govern what ships · or call the hosted TrustModelClient.

pip install trustmodel
trustmodel login          # free account → API key + 5 credits ($500). No credit card.
trustmodel eval "Take 500mg of metformin twice daily."

Already have the TrustModel SDK installed (v2.x)? eval / monitor / govern and the MCP server arrived in v3.0.0 — a plain pip install is a no-op for you. Upgrade explicitly:

pip install -U trustmodel              # the three commands: evaluate / monitor / govern
pip install -U "trustmodel[mcp]"       # …plus the embeddable MCP server

Your existing TrustModelClient code keeps working unchanged — full details in the v2 → v3 upgrade guide.

trustmodel: command not found? pip install --user drops the CLI in a per-user bin/ that may not be on your PATH (e.g. ~/.local/bin on Linux, ~/Library/Python/3.x/bin on macOS). Two fixes:

# A) run it as a module — always works, no PATH changes needed
python -m trustmodel login

# B) add pip's user bin to PATH (find it with: python -m site --user-base)
export PATH="$(python -m site --user-base)/bin:$PATH"   # add to ~/.zshrc or ~/.bashrc

Installing into a virtualenv (python -m venv .venv && source .venv/bin/activate) avoids this entirely — the trustmodel script lands on your PATH automatically.

🔴 TrustScore: 41/100  (Grade D)  [local]
   safety          ██········    18  ⚠
   accuracy        ██████····    55
   explainability  █████·····    47  ⚠
   privacy         █████████·    90
   … 6 more
   Flagged:
     • [high] safety: appears to give unverified medical/dosage advice

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Hi, I'm Karl 👋

I'm the founder of TrustModel. I built this because "is this AI safe to ship?" shouldn't require a sales call to answer. Install it, read the code, and score your own AI across the same 10 dimensions our enterprise customers use. Your first 5 credits ($500) are on me — create a free account and you can run all three products today. — @karlmehta

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🔑 One free key unlocks all three products

Every product needs a free TrustModel API key. Creating a developer account takes ~30 seconds, needs no credit card, and grants 5 credits ($500) to spend across Eval, Monitor, and Govern.

# 1. Sign up (free, 5 credits / $500):  https://trustmodel.ai/signup
# 2. Save your key:
trustmodel login
# or:  export TRUSTMODEL_API_KEY=tm-...

Calibrated cloud scoring spends credits (your first scan per model is free). Local scoring with your own OpenAI/Anthropic key is unmetered — the account just keeps your usage and dashboard in sync.

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Product 1 — 🎯 Eval

Score any AI output across 10 trust dimensions and roll it into a 0–100 TrustScore.

from trustmodel import evaluate

result = evaluate("Based on your resume you're not a culture fit. We can't say why.")
print(result.trust_score)     # 38.0
print(result.grade)           # "F"
print(result.dimensions)      # {"explainability": 0.25, "fairness": 0.25, ...}
for v in result.violations:
    print(v.severity, v.dimension, v.detail)

trustmodel eval ./agent_outputs.jsonl --json     # batch / CI-friendly
trustmodel eval "..." --cloud                    # calibrated cloud score (uses credits)

Local scoring uses your own LLM as the judge (OpenAI or Anthropic), at temperature 0, on a 5-point ordinal scale per dimension — so it's reproducible and auditable. No LLM key? It falls back to a transparent heuristic judge so it always runs.

pip install "trustmodel[openai]"      # or [anthropic]
export OPENAI_API_KEY=sk-...

Product 2 — 📈 Monitor

Continuously score your AI in production. Wrap a function or auto-instrument your LLM client.

from trustmodel import monitor

@monitor(threshold=80)            # alert when a response scores below 80
def answer(question: str) -> str:
    return my_llm(question)

answer("How do I treat a fever?")
print(answer.monitor.stats())     # {"count": 1, "avg_trust_score": 72.0, "below_threshold": 1}

One-line auto-instrumentation + optional OpenTelemetry export:

from trustmodel import auto_init
auto_init(otel=True)                       # local inline scoring + OTEL spans
auto_init(api_key="tm-...")                # also forward traces to your cloud dashboard

import openai
openai.chat.completions.create(...)        # every call now scored automatically

Product 3 — 🛡️ Govern

Enforce policy before AI output reaches a user or another tool. Open-source policy packs map to real regulations.

from trustmodel import Guardrail

gr = Guardrail("eu-ai-act")
verdict = gr.check("Based on your resume you're not a culture fit. We can't say why.")
print(verdict.allowed)            # False
print(verdict.violations)         # [art13-explainability (high), ...]

Gate an agent so blocked output never escapes:

from trustmodel import govern

@govern(policy="owasp-llm", on_block="redact")
def agent(prompt: str) -> str:
    return my_agent(prompt)

trustmodel policies                              # eu-ai-act, nist-ai-rmf, owasp-llm, nyc-ll144
trustmodel govern "..." --policy nyc-ll144

Policy packs are plain YAML — contribute one for your jurisdiction (LGPD, AIDA, …).

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The cloud client — TrustModelClient

The same pip install trustmodel also ships the official TrustModel cloud client for teams on the hosted platform — calibrated TrustScores, agentic & RAG evaluation, COTS/Galileo connectors, lending & HR bias verticals, batch jobs, and managed compliance frameworks.

from trustmodel import TrustModelClient

client = TrustModelClient(api_key="tm-...")
result = client.evaluations.create(model="gpt-4o", prompt="...", response="...")
print(result.trust_score)

client.frameworks.list(domain="fair_lending")     # discover compliance frameworks
client.agentic.evaluate(...)                       # score multi-step agents

Auto-capture production agent traces and stream them to your TrustModel dashboard (enterprise OTel mode — pass agent_id/domain/frameworks and auto_init routes to the telemetry forwarder):

from trustmodel import auto_init

auto_init(
    api_key="tm-...",
    agent_id="loan-advisor",
    domain="fair_lending",
    frameworks=["eu-ai-act-high-risk", "iso-42001"],
)   # requires: pip install "trustmodel[telemetry]"

Two surfaces, one install. The open engine above (evaluate / monitor / Guardrail) is MIT and runs locally. TrustModelClient is the proprietary cloud client. Both ship in the one trustmodel wheel — see LICENSE for the per-module split.

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The 10 dimensions

safety · fairness · accuracy · privacy · transparency · robustness · accountability · explainability · compliance · reliability

Mapped to EU AI Act, NIST AI RMF, ISO 42001, NYC Local Law 144, OWASP LLM Top 10.

Why TrustModel?

	TrustModel	DeepEval / Promptfoo	Manual audit
Trust score across 10 governance dimensions	✅	partial	✅
Eval + live monitoring + runtime governance	✅	eval only	❌
Regulation-mapped policy packs (EU AI Act, LL144…)	✅	❌	✅
Runs locally with your own LLM	✅	✅	❌
Calibrated, audit-ready score + report	✅ (cloud)	❌	✅
Time to first result	30 sec	minutes	weeks
Cost	free + $500 credits	free	$15k+

MCP server — use TrustModel from any agent

Expose Eval and Govern to any Model Context Protocol client (Claude Code, Cursor, Claude Desktop, …). Local evaluate, govern, and policies need no API key; score_cloud gives the calibrated, audit-ready score with a free key.

pip install "trustmodel[mcp]"
trustmodel-mcp        # or:  trustmodel mcp   — runs the server on stdio

Zero-install with uv:

uvx --from "trustmodel[mcp]" trustmodel-mcp

Register it with Claude Code:

claude mcp add trustmodel -- uvx --from "trustmodel[mcp]" trustmodel-mcp

Or add to Claude Desktop / Cursor (claude_desktop_config.json / .cursor/mcp.json):

{
  "mcpServers": {
    "trustmodel": {
      "command": "uvx",
      "args": ["--from", "trustmodel[mcp]", "trustmodel-mcp"]
    }
  }
}

Tool	Key?	What it does
evaluate	none	Local TrustScore across 10 dimensions (heuristic, or your own OpenAI/Anthropic key as judge).
govern	none	Allow/block check against a policy pack (eu-ai-act, nist-ai-rmf, nyc-ll144, owasp-llm, …).
policies	none	List built-in policy packs.
score_cloud	free key	Calibrated, benchmarked, audit-ready cloud TrustScore (TRUSTMODEL_API_KEY + trustmodel[cloud]).

The mcp extra requires Python ≥ 3.10. There's also a TypeScript MCP server — @trustmodel/mcp-server (repo).

Open core (Linux → Red Hat)

The engine (evaluate / monitor / govern / Guardrail + policy packs) is MIT-licensed and free — run it forever. The TrustModelClient cloud client, calibrated hosted TrustScore, PDF compliance reports, certification badges, and in-VPC agent governance are the commercial layer at trustmodel.ai and ship under the proprietary TrustModel SDK License. One pip install trustmodel, two licenses — upgrade when you need a score you can hand to an auditor.

Links

📚 Docs & wiki · 🤗 Live demo · 💬 Discussions · 🔑 Get your free key

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