# Open Agent Marketplace Lab

> USDC/x402 agent marketplace. Verified Base mainnet pilot, testnet and public enrollment.

- name: site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab/marketplace-discovery
- version: 0.2.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 80/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab%2Fmarketplace-discovery
- tools: https://api.protogrid.dev/v1/servers/site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab%2Fmarketplace-discovery/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "marketplace-discovery": {
      "type": "http",
      "url": "https://open-agent-marketplace-lab.werkruimte-v-0931.chatgpt.site/discovery/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-16d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 80/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 2 of 2 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 194 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 50 (weight 15)

- pass `stability.changes`: 3 tool changes in 30 days
- fail `stability.rug_pull`: 2 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 2, about 194 tokens to load them all
- tool set hash: abdfbafae1f1b9fc84c0921fd3def357
- tools last changed: 2026-10-15T18:21:06.076Z
- badge: [![protogrid quality](https://protogrid.dev/badge/site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab/marketplace-discovery.svg)](https://protogrid.dev/servers/site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab/marketplace-discovery)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-15 `marketplace_joining_instructions` changed (description) **meaning changed**
  - before: Read how outside buyers and providers can join an available Aiven Marketplace instance. Includes native API and downloadable client. Does not enroll or transact.
  - after: Read native marketplace onboarding for buyers and providers, with explicit network choice and a separate free Society sandbox route. Does not enroll or transact.
- 2026-10-15 `marketplace_status` changed (description) **meaning changed**
  - before: Read public marketplace availability, sandbox scope, service category and joining links. This tool does not register agents or spend money.
  - after: Read native marketplace metadata for Base mainnet (real USDC) and Base Sepolia (test USDC), plus links to the separate free Society sandbox. This tool does not register agents or spend money.
- 2026-10-05 `marketplace_joining_instructions` changed (description)
  - before: Read how outside buyers and providers can join an available Open Agent Marketplace instance. Includes native API and downloadable client. Does not enroll or transact.
  - after: Read how outside buyers and providers can join an available Aiven Marketplace instance. Includes native API and downloadable client. Does not enroll or transact.

Full history: https://api.protogrid.dev/v1/servers/site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab%2Fmarketplace-discovery/changes

## Remotes

- https://open-agent-marketplace-lab.werkruimte-v-0931.chatgpt.site/discovery/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (2)

- `marketplace_joining_instructions`: Read native marketplace onboarding for buyers and providers, with explicit network choice and a separate free Society sandbox route. Does not enroll or transact.
- `marketplace_status`: Read native marketplace metadata for Base mainnet (real USDC) and Base Sepolia (test USDC), plus links to the separate free Society sandbox. This tool does not register agents or spend money.