404.directory
Server Details
Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks.
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- Status
- Unhealthy
- Uptime
- 74.4% over 40 days
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- Streamable HTTP
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- Repository
- MM-sheng/404-directory
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- 404.directory
TDQS
Scored across 16 tools
Most tools have clearly distinct catalog, risk-evaluation, and web-verification roles. Minor overlap exists between get_tool (which already includes trust profile data) and get_trust_score, and between list_capabilities and get_capability_graph, though the detailed descriptions help resolve most ambiguity.
All tool names follow a consistent snake_case verb_noun pattern (compare_, evaluate_, get_, inspect_, invoke_, list_, recommend_, report_, search_, understand_, verify_). Retrieval, evaluation, and action verbs are used predictably throughout the set.
At 16 tools, the count is just above the ideal 3-15 band but still feels reasonably scoped for a directory/trust/recommendation service. The inclusion of search_official_docs, understand_webpage, and verify_web makes the set slightly broader than the core catalog purpose.
The set covers catalog discovery, comparison, tool inspection, invocation, risk evaluation, and behavioral feedback loops well. Minor gaps exist, such as no obvious browse-all-tools operation and no catalog registration/update path, but the core agent workflows have no critical dead ends.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
1 tool update
- Changed
search_tools6 fields changed- added
Input schema / properties / capability / descriptionAdded value: +"Case-insensitive literal capability substring, e.g. 'documentation-search'. Get available labels from list_capabilities; SQL wildcard syntax is not supported." - added
Input schema / properties / category / descriptionAdded value: +"Exact catalog category, e.g. 'developer-tools'." - added
Input schema / properties / limit / descriptionAdded value: +"Maximum results after relevance ranking and all filters, from 1 to 50." - added
Input schema / properties / protocol / descriptionAdded value: +"Required protocol family when supplied; never relaxed automatically." - added
Input schema / properties / q / descriptionAdded value: +"Short keywords or an exact catalog name, e.g. 'official documentation' or 'openai_docs_mcp'. Keyword order is flexible; docs/doc map to documentation. Omit for filtered browsing. No arbitrary semantic inference." - added
Input schema / properties / trust_threshold / descriptionAdded value: +"Minimum existing catalog trust score. Not a calibrated safety probability; never lowered automatically."
4 tool updates
- Added
evaluate_prediction_market - Added
evaluate_tool_risk - Added
report_prediction_market_outcome - Added
report_tool_outcome
1 tool update
- Added
search_official_docs
2 tool updates
- Added
inspect_tool_server - Added
invoke_registered_tool
7 tool updates
- Added
compare_tools - Added
get_capability_graph - Added
get_tool - Added
get_trust_score - Added
list_capabilities - Added
recommend_tools - Added
search_tools
2 tool updates
- First observed
understand_webpage - First observed
verify_web
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