robot-shop
https://robotshop-production.up.railway.app/mcp ↗
Description
Machine-first AI Agent digital goods marketplace enabling autonomous purchases of APIs, Datasets, Prompts, and Tools via the x402 Payment Protocol on Base and Remote MCP.
What our measurements say
robot-shop is a remote MCP server published at robotshop-production.up.railway.app. It has been probed 6 times since 9/10/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 556 ms, a delay an agent will notice. It exposes a broad tool surface of 21 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Some tool names (e.g., 'buy_product', 'get_product') clearly indicate their purpose.
- Descriptions for payment-related tools (e.g., 'buy_product') include specific error handling details.
Weaknesses
- Several tool descriptions are vague about use cases (e.g., 'use_message_relay_tool')
- No input schema details provided for parameter requirements or types
- Overlapping functions between 'inscribe_chronicle_line' and 'use_message_relay_tool'
use_message_relay_tool— Ambiguous description without clear use case boundariesinscribe_chronicle_line— Overlapping functionality with 'use_message_relay_tool'repair_and_validate_json— No explicit parameter schema for input/output formatsrun_sandboxed_code— No mention of allowed/forbidden code types in description
Verdict
Event narrative
Risk: medium
- 2026-09-10T21:16:35.016Z — era changed from 'auth-gated' to 'legacy' · indicates system reconfiguration or policy update
- 2026-09-11T07:35:54.413Z — complianceScore increased from null to 100 · signals successful compliance validation
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 34ms → warm 42ms (penalty 0ms)
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Server build: — → 1.0.0
- Supported versions: — → 2024-11-05
- Era changed: Auth-gated → Legacy
- Added to watch — era: Auth-gated
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