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Playgent (YC S25) — Sandboxes for AI agents

When enterprise agents fail in production, the conditions that caused the failure are critical: user state, data, tool calls, and context. Without a way to recreate these conditions, teams can't fix what broke.

Playgent is a Y Combinator company in the Summer 2025 batch. Its directory entry describes it as: Sandboxes for AI agents. The founders listed are Neer Jain (Founder/CEO), Aniruddh Sriram (Founder/CTO) (Y Combinator directory entry, August 6, 2025).

6 more companies from YC Summer 2025 ↓

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Playgent

New accelerator entry · 2025-08-06 · the record

Summer 2025
batch
2
people
Early
stage
United States of America
region
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What the record says

BatchSummer 2025
Announced2025-08-06
StageEarly
StatusActive
Team size2
IndustryHealthcare
Sub-industryHealthcare -> Healthcare IT
SectorsSaaS, Infrastructure, AI
RegionsUnited States of America, America / Canada
BasedSan Francisco, CA, USA
HiringNo
Sitehttps://useplaygent.com
Previously known asPharmie AI

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Also in YC Summer 2025

Same batch, Healthcare first.

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Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

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In their words

When enterprise agents fail in production, the conditions that caused the failure are critical: user state, data, tool calls, and context. Without a way to recreate these conditions, teams can't fix what broke. Playgent provides infrastructure to create high-fidelity sandbox environments for AI agents. Our environments come packaged as a single MCP url where tool calls are mocked, authentication is abstracted away, and test data can be initialized via natural language or JSON specifications. Teams can use Playgent to reproduce production failures in safe, scoped environments that accurately reconstruct state. Finally, export runs as OTel traces from Playgent's environment to plug directly into your observability tools or RL pipelines.

Want the whole picture on Playgent?

Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

A Full Report on Playgent: verified, sourced, every claim cited, ready in a few minutes. See pricing.

What the Full Report on Playgent covers

  1. The Short Answer

  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    1 cited source found

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Sourced from the company's Y Combinator directory entry.

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Playgent: Accepted into Y Combinator Summer 2025
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Permanent URL: https://mentionfox.com/funding/yc-playgent
Last updated 2026-10-20
Primary record: Y Combinator directory entry
Playgent (YC S25) — Sandboxes for AI agents. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-playgent