# AgentSIM (agentsim.dev)

Runs SMS, email and passkey auth challenges on apps you own and returns a verdict to a coding or browser agent.

- Atlas card: https://inite.ai/en/atlas/agentsim.dev
- Site: https://agentsim.dev
- For: Builders running AI agents against apps they own, in staging, CI, or live runs
- Categories: dev
- Use 0/100 · alive 100/100

## Used for

- Run auth challenges inside CI pipeline tests
- Return SMS verification codes to a running agent
- Stop agent runs safely at refused auth walls

## Price

- from 99 USD/month (read 2026-10-21 on https://agentsim.dev/#pricing)

## For developers

- OpenAPI: https://docs.agentsim.dev/openapi.json (9 paths)
- API docs: https://docs.agentsim.dev/api-reference/overview
- MCP server: dev.agentsim/mcp (namespace; auth on 2026-10-21)
- Read 2026-10-21

## MCP server, measured daily

Server: https://mcp.agentsim.dev/mcp, checked every day since 2026-10-21 (6 checks).

- Answered: measuring, 6 daily checks so far
- Median first answer: 115 ms
- Sign-in: a pasted key
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-21

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Source: INITE Atlas, https://inite.ai/en/atlas/agentsim.dev. JSON: https://inite.ai/api/atlas/agentsim.dev. MCP: https://inite.ai/api/mcp (atlas_lookup).