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AgentSIM

Give your agents a safe path through the auth challenges you own.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-23T09:04:55.911Z. Cached copy · Source on agentsim.dev

# AgentSIM

> Give your agents a safe path through the auth challenges you own.

## What It Does

AgentSIM is a control plane for agents working through authentication challenges on verified services they control. It verifies the service origin, applies policy, and returns a structured SMS verdict. Email and magic-link paths are test-only. Passkeys and CAPTCHA stop safely. Google and Stripe are refused.

When a browser agent or CI job hits an auth wall, AgentSIM runs the challenge, applies your policy, and returns a verdict so the run can continue. Agents can use it through SDKs, REST, webhooks, or MCP.

- **Owned auth, CI/QA, and agent runs.** Challenge coordination for apps you own, test harnesses, and live agent runs — not a phone shop, not a bypass.
- **Policy verdicts.** When a target is refused (Google, Stripe by denylist) or nothing arrives, the session records the outcome so the run can branch.

One live session covers a successful number assignment or extension for one verified service origin. Hobby includes 10 shared live sessions per UTC month. Builder is $99/month and includes 50 shared live sessions. Live SMS is available now for verified US service origins; Browser Access uses the same allowance when enabled. Review tax, renewal, and any existing agreement at checkout before payment.

## Authorized Use Only

AgentSIM is for **authorized testing of systems you own or are permitted to test** and for auth workflows on providers you control.

**Not for** creating accounts on third-party services you do not own, bypassing anti-abuse systems at Google, Meta, Stripe, or banks, bulk account creation, ban evasion, or any use that violates a target service's terms or applicable law. Google and Stripe are refused by policy denylist. Not a phone/OTP rental shop.

## Compatibility

Use an app you own with a real public HTTPS origin. Live SMS requires automated verification of the exact service origin in Agent control, a matching allow policy, remaining allowance, and a ready shared US line. Google and Stripe are refused by policy. Test-only injected messages do not prove carrier delivery.

Current access and channel support: https://docs.agentsim.dev/availability
Compatibility checks: https://docs.agentsim.dev/supported-services


## Quick Start

Primary published SDK (TypeScript). `openChallenge` opens an SMS challenge session. `waitForVerdict` waits for the verdict. `provision` / `waitForOtp` are aliases that still work. Timeout is seconds, not milliseconds.

```bash
bun add @agentsim/sdk
# or
pip install agentsim-sdk
```

```typescript
import { openChallenge } from "@agentsim/sdk";

// Replace this target with your owned public HTTPS origin. Requires live access.
await using num = await openChallenge({ agentId: "checkout-bot", serviceUrl: "https://staging.example.com" });
// Enter num.number in your app and request its SMS code.
const otp = await num.waitForVerdict({ timeout: 60 });
// otp.otpCode is the parsed SMS verdict on apps you own
```
…

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Claim my listing on Agent Web Map for agentsim.dev:
1. POST https://agentwebmap.com/v1/sites/agentsim.dev/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://agentsim.dev/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/agentsim.dev/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/agentsim.dev).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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