# x402 Bazaar Listing Monitor

> x402 Bazaar Listing Monitor, an MCP server by acjlabs.com, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Checks x402 Bazaar resource listings against the public discovery catalog and flags drops.

- Canonical: https://www.anchorterminal.com/tools/acjlabs-x402-listing-monitor
- Markdown: https://www.anchorterminal.com/tools/acjlabs-x402-listing-monitor.md (~650 tokens)
- Slim: https://www.anchorterminal.com/tools/acjlabs-x402-listing-monitor.min.md (~580 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/tools/acjlabs-x402-listing-monitor.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-04

# x402 Bazaar Listing Monitor

> Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: MCP server, by acjlabs.com (https://acjlabs.com/products)
- Category: Observability & incidents (https://www.anchorterminal.com/categories/observability.md)
- Listed because: It's published in the registry under acjlabs.com, a namespace the registry only gives to whoever proves they control that domain.
- What the official MCP registry says: Checks x402 Bazaar resource listings against the public discovery catalog and flags drops.

## Facts

- MCP registry: `com.acjlabs/x402-listing-monitor` 0.1.0
- Endpoint: https://x402-listing-monitor.acjlabs.com/mcp (streamable HTTP)
- Source: https://github.com/acjlabs/x402-listing-monitor
- Website: https://acjlabs.com/products
- GitHub stars: 1
- Registry entry updated: 2026-08-02

## Tools

- Tools it lists (1, about 177 tokens of context, `tools/list` without credentials over MCP 2025-11-25, checked 2026-10-04 22:21 UTC):
  - `check_listing_health`: Checks whether a seller's x402 Bazaar resources are currently listed under the given payTo address in the public discovery catalog. Flags each resource as…
- How its tools read to an agent (0 errors, 2 warnings, 1 note, about 177 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):
  - warn TC11 check_listing_health: none of its 2 parameters has a description
  - warn TC16 check_listing_health: no readOnlyHint or destructiveHint
  - note TC24 server: 1 of 1 tools have no outputSchema

- JSON: https://www.anchorterminal.com/api/v1/tools/acjlabs-x402-listing-monitor.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming