Use Case

Browser Harness for Agents

Adaptive's Stratos is a browser plugin that gives agents just-in-time sessions — every navigation, click, form fill, and download brokered by policy. You write the prompts and workflows; Adaptive's Stratos provides the harness, tools, networking, and guardrails. Allow-listed origins, ephemeral profiles, masked PII, and a full session replay keyed to the harness id.

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RoadmapAdaptive·h-5340

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FLY-1App basics

FLY-2Basic trip booking

FLY-3Invite and share

FLY-4My Trips overview

FLY-5Notifications

The problem

Modern agents need a real browser to do real work — triage tickets in Jira, enrich accounts in Salesforce, file expense reports in Concur, screenshot a flaky dashboard for a bug report. The moment you hand an agent a browser, it inherits the same trust boundary as an employee laptop: cookies, SSO sessions, autofill, downloads, and unrestricted egress to the open web. A misbehaving prompt or a single redirect to a hostile origin is enough to leak credentials, wire money, or stamp through a confirmation dialog the human would have caught.

68%

of agent incidents observed in 2025 involve a browsing step — wrong tab, wrong button, wrong domain, or a session token reused across tools

3.4×

more egress destinations touched by an agent's browser than a human's during equivalent tasks, often to ad-tech, telemetry, or unlisted third parties

$28k

median direct loss from a single agent-driven browser action that completed an unintended payment, refund, or share-link operation

Headless browsers behind a VPN do not fix this. The risk is not at the network layer — it is at the action layer. Without a browser that is itself a policy boundary, every prompt is one click away from an irreversible operation, and every session leaves credentials and cookies behind for the next run to inherit.

The solution

A browser that is itself a policy boundary — scoped to one harness, recorded, and torn down on exit

Adaptive's Stratos gives every agent run its own isolated browser instance — fresh profile, ephemeral storage, allow-listed origins, DLP on inputs and outputs, full session replay, and credentials provisioned just-in-time and revoked when the harness tears down. The browser, the credentials, the network egress, and the tools are all bound to a single harness id, so an agent literally cannot reach anything its policy did not authorize.

Benefits

How Adaptive helps

Just-in-Time Browser Sessions

Every agent run gets a fresh browser profile with credentials provisioned for the job and revoked on teardown. No cookies, no SSO session, no autofill from the previous run — and no standing browser identity for the next prompt to inherit.

Write the prompts and workflows that drive the agent. Adaptive's Stratos browser plugin provides the harness, the tool surface, and the credentials — bound to the harness id with a TTL, scoped to what the run actually needs, and discarded with the profile when the harness exits.

Origin Allow-List Per Harness

Each harness declares the origins its agent is permitted to navigate. Anything off-list — ad networks, link-shorteners, lookalike domains, hostile redirects — is blocked at the browser layer, before a single byte is sent.

Bind allow-listed origins to the run's policy: jira.acme.com and salesforce.acme.com for support agents, sec.gov and the company KB for research agents, payments.acme.com only when a payments role is explicitly scoped in.

DLP on Inputs and Outputs

Adaptive's Stratos inspects what the agent types into a form and what the page sends back. PII, secrets, and regulated identifiers are masked before they leave the harness, and screenshots, downloads, and clipboard reads are filtered against the same policy.

Apply the same DLP rules used for databases and APIs to the browser surface — mask SSNs and PHI in form fields, redact card numbers in screenshots, block downloads of files matching credential patterns.

Action Confirmation for Irreversible Steps

High-impact actions — wires, refunds, role changes, share-link creation, destructive admin operations — pause the agent and require a typed confirmation or human approval. Reversible actions stay autonomous; irreversible ones get a guardrail.

Tag origins and DOM patterns as irreversible (e.g. PayPal checkout, Salesforce "Send to all", Okta role grants). The harness intercepts the action and blocks until policy is satisfied.

Full Session Replay

Every page visited, every click, every keystroke, and every network request is recorded with the harness id. Replay a run pixel-for-pixel to debug a flaky agent, prove what data was seen, or hand a tamper-evident artifact to compliance.

Stream session recordings into your SIEM or evidence store keyed by harness id. Attach the replay link to the agent's PR, ticket, or audit record so the work and its proof ship together.