// solutions.agentic_sdlc
Coding agents that verify their ownpayment flowbefore the PR.
Veris is a stateful dependency sandbox for coding agents. Every outbound call, whether to a database, an internal service, or a third-party API, hits a live, stateful simulated instance instead of the real system.
- stateful services, not static mocks: write a row, read it back
- one full stack per agent, thousands in parallel
- spin up, use, reset, tear down, all inside the agent loop
// the_problem
Coding agents write code faster than anyone can integration-test it. Static mocks return canned responses, and a shared staging environment can't serve a fleet of agents mutating it concurrently.
Before
The agent's tests pass against mocks that always say 200 OK. The state-dependent bugs surface in review, or worse, in production: the dropped webhook, the stale balance, the race on the queue.
With Veris
Every agent gets the entire stack, simulated and stateful. It runs real integration tests, watches state change, fixes what broke, and opens a PR that already proved it works.
// with_veris_you_get
Better dependency access changed what the agent caught, and what it cost to get there.
// how_it_works
The Veris loop
The same four moves on every Veris page, voiced for this job.
// the_engine_underneath
One engine. Simulated worlds.
Every Veris solution runs on the same simulation engine. Compose an environment by listing the systems in your stack (databases, APIs, MCPs, and the humans in the loop) and describe a scenario in plain language. The engine simulates that world: actors stay on goal and behave like people, services stay consistent and high-fidelity, and every run is isolated and repeatable.
Runs in your VPC · SOC 2 Type II · Thousands of concurrent agents · Synthetic data or your own
Explore the platform →…and dozens more, from banking cores to ERPs — or bring an API spec and Veris builds the simulator
// what_you_get
What you get
01Stateful, not mocked
A mock returns the same canned response forever. A Veris service holds state: write a row, read it back, watch a webhook fire. The failure modes that actually reach production are the ones your agent now catches.
02More than an empty sandbox
E2B, Daytona, or your own containers answer “where does my code run?” Veris answers “what does my code run against?” An empty compute sandbox has no dependency environment: the agent must invent its own fakes, and whether those fakes match vendor reality is a coin flip. Veris fills the sandbox you already use with stateful, vendor-true dependencies.
| empty sbx | veris | |
|---|---|---|
| compute + filesystem | ✓ | ✓ |
| stateful deps: DB, APIs, queues | ✕ | ✓ |
| vendor-true failure modes | ✕ | ✓ |
| failure injection on cue | ✕ | ✓ |
| verifiers on end state | ✕ | ✓ |
| dependency reset between runs | ✕ | ✓ |
03A full stack per agent
Each sandbox is isolated with its own per-service endpoints, so a hundred agents can run destructive tests concurrently without sharing a staging environment. Nobody waits, nobody collides.
04Spin up, reset, tear down
Sandbox lifecycle is an API call: create one, get endpoints, reset state between test runs, destroy it when the branch merges. Built to sit inside an agent loop, not a ticket queue.
05Any agentic stack
Claude Code, Codex, Cursor, or your own harness, running on your laptop, in an E2B or Daytona sandbox, or on your CI runners. The agent just points its config at Veris endpoints. No framework to adopt, no SDK lock-in, nothing new to teach the agent.
// before_you_ask
Questions engineers ask first
$Does Veris replace E2B, Daytona, or the sandboxes we already run?
No, it fills them. E2B, Daytona, Docker, or your own Kubernetes give the agent compute: a filesystem and a shell. Veris provides what that compute talks to: the stateful databases, payment APIs, CRMs, and queues the code under test depends on. Point the sandbox's environment variables at Veris endpoints and keep everything else exactly as it is. Bring your own compute; Veris supplies the dependency environment.
$How is this different from mocks or the vendor's own test mode?
A mock returns canned responses and holds no state: write a row, and there's nothing to read back. Vendor test modes are real but limited: you can't trigger an outage on cue, async failure paths often depend on webhooks, and the shared account accumulates state across runs. A Veris Dependency Sandbox is stateful and vendor-true, with failure states configurable as data, and every run starts from a fresh reset. In our benchmark, agents with Veris caught every planted integration bug in every run; no other environment achieved full coverage.
$How is this different from having a staging environment?
Staging is one shared environment: it drifts from production, accumulates state, and usually still touches something real, so a fleet of agents mutating it concurrently is a non-starter. Veris gives every agent its own stack: stateful, isolated, reset in milliseconds, destroyed when the branch merges. Nobody queues, nobody collides, and a destructive test costs nothing.
$How does an agent actually connect?
Environment variables or MCP. A sandbox is an API call: create it, get per-service endpoints back, export them as DATABASE_URL / STRIPE_API_BASE / whatever your code already reads. The agent's own loop can create, reset, and destroy sandboxes as it works. No SDK to embed, no proxy to install in your app.
$Can you simulate my internal services?
Yes. Hand Veris an API spec, or point it at the repo, and it builds a stateful simulator of the service: endpoints that hold state between calls, respond like the real implementation, and fail on cue when you want the unhappy paths tested. That gives your agents an integration target for systems that have no vendor test mode at all, without touching the real deployment.
$What about third-party services Veris doesn't have yet?
More than 70 twins are ready today: CRMs, billing, ticketing, databases, queues, clouds. For anything else, hand Veris an API spec and it builds the simulator, the same way it does for your internal services.
$How realistic are the simulated services?
Twins are built vendor-true: the same endpoints, status codes, webhook timing, and edge-case behavior as the service they mirror, and they're maintained centrally, so when a vendor ships a change your tests track the service rather than a snapshot of it.
$How do sandboxes get realistic data?
Every service starts from a seed you control: bring your own fixtures, or let Veris compose production-shaped synthetic data for you, drawing on your product descriptions and docs, subject-matter-expert input, schemas, and exploration of your code. The seed is part of the sandbox definition, so every reset returns to the same known baseline, which is what makes a failing run reproducible instead of a flake.
$Is this only for coding agents, or can CI and developers use it too?
The sandboxes don't care who calls them. The same veris.yaml serves three consumers: agents verifying their work in-loop, CI running the integration suite on every pull request, and developers pointing a local .env at a personal stack instead of a shared staging environment. Most teams start with one and end up using all three.
$Do agents ever see live credentials?
No. Every endpoint is simulated, so there is nothing real to leak: zero live keys handed to any agent. Compare that with testing against a vendor's real test mode, where the agent needs an actual key with actual permissions. Destructive tests, injected outages, and hostile inputs all stay inside a disposable Dependency Sandbox.
$Can a fleet of agents run destructive tests at the same time?
Yes, that's the point of one full stack per agent. Each sandbox is isolated with its own endpoints and its own state, so a hundred agents can drop tables and refund charges concurrently without sharing a staging environment. Sandboxes spin up in seconds and reset in milliseconds, inside the agent loop rather than a ticket queue.