Nythrex

Service · Agentic AI

AI agents that do real work. With a kill switch.

An agent is an LLM that can use tools: search a database, update a CRM record, send an email, open a ticket. That makes agents far more useful than chatbots — and far riskier. We build agents that act within explicit limits, ask a human before anything irreversible, and leave an audit trail you can actually read.

Guardrails · scopes · budgetsTask: resolve ticketPlanActObserveCRM lookupOrder systemRefund (≤ limit)Email draftKnowledge baseHuman approvalAudit log of every step
The agent loops through plan → act → observe inside hard limits; risky actions route to a person.

What agents are good at today

Agents work best on tasks that are multi-step, rule-guided and tolerant of review: a human used to do them by looking things up in several systems, applying judgement, and taking one of a few possible actions. They are still a poor fit for open-ended goals with no clear finish line, or for actions where a single mistake is catastrophic and can’t be reviewed.

Support triage & resolution

Classify, gather order and account context, propose or execute standard resolutions within limits.

Back-office operations

Reconcile invoices against orders, chase missing documents, update records across systems.

Sales operations

Enrich leads, update the CRM after calls, draft follow-ups for a rep to approve.

IT & internal requests

Access requests, password resets, provisioning — with approvals and logs.

Research & reporting

Collect data from internal sources, compile a draft report, cite every number.

Data quality

Find duplicates, inconsistencies and missing fields; propose fixes for review.

Choose the level of autonomy deliberately

We usually start at level 2 and move up only when evaluation and production data justify it.
LevelWhat the agent doesGood for
1 · AssistantSuggests the next step; a person does everythingNew processes, high-risk domains, first rollout
2 · DraftsPrepares actions (emails, updates) for one-click approvalMost business workflows — the sweet spot
3 · Acts within limitsExecutes low-risk actions itself, escalates the restHigh-volume, well-understood tasks with clear limits
4 · AutonomousRuns end-to-end, humans review samplesRarely justified; only with strong evaluation history

The safety model

01Least-privilege tools

Each tool has a narrow purpose and its own credentials scope. “Run any SQL” is never a tool.

02Hard limits in code

Refund caps, rate limits, allowed recipients and step budgets are enforced by the system, not by the prompt.

03Human approval for irreversible actions

Payments, deletions and external communication wait for a person until you decide otherwise.

04Prompt-injection defence

Content from emails, web pages and documents is treated as data, never as instructions; sensitive tools are gated.

05Full audit trail

Every thought, tool call, input and output is logged with a correlation ID you can search.

06Cost and loop budgets

Maximum steps, tokens and time per task; runaway loops are stopped and reported.

How we test agents

  1. 1

    Scenario library

    We write realistic tasks with the expected end state: which records should change, which shouldn’t, what message should go out.

  2. 2

    Sandboxed tools

    Agents run against test copies or mocks of your systems, so scenarios can be replayed safely on every change.

  3. 3

    Outcome checks

    We score the final state, not the wording: correct action taken, nothing extra touched, limits respected.

  4. 4

    Trajectory review

    For failures, we inspect the step-by-step trace to decide whether the fix belongs in tools, instructions or limits.

Stack and standards

We build agents with plain, testable code around the model’s tool-calling API, adding frameworks only where they earn their keep. For connecting agents to many internal systems we use the Model Context Protocol (MCP), which gives each system a standard, permissioned interface. Everything runs in your cloud, with secrets in your vault.

Frequently asked questions

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