MarketNow Registry / Developer Tools / agent-playground

agent-playground

LLM Harness for developing, debugging, and evaluating custom agents, tools, MCP servers, prompts, and memory constructs using Anthropic, OpenAI, or a local model.

Developer Tools v1.0.0 by Travis-ML

Trust score

40/100

Install risk

Runs registry code

Source

github

Indexed

2026-09-10

Install

$ pip install agent-playground

Installing via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.

How MarketNow scored this

Sentinel Index Heuristics — a security-first estimate from public signals:

Package age and release activity (stale repositories lose points)
Verified adoption: registry downloads or GitHub stars, not follower counts
Typosquat distance against the 150 most-installed MCP packages
Injection markers scanned in the package description

Heuristic, not a guarantee. For verified agent credentials and revocation, see the MarketNow Trust API.

What is agent-playground?

LLM Harness for developing, debugging, and evaluating custom agents, tools, MCP servers, prompts, and memory constructs using Anthropic, OpenAI, or a local model. Indexed by MarketNow with trust 40/100 (Runs registry code).

How do I install it?

Run $ pip install agent-playground Installing via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.

What does the trust score mean?

Security-first heuristic over public signals (age, adoption, typosquat distance, injection markers). It is not a popularity ranking and not a guarantee of safety. agent-playground scores 40/100.