
Otr Protocol
Adds merchant trust verification through a single MCP tool that returns trust scores, safety badges, and six-dimensional risk breakdowns. Built for AI agents making purchase decisions, it queries a deterministic scoring engine that pulls from SEC filings, Wikidata, domain age, SSL configs, and Google Web Risk checks. One call to verify_merchant gives you a 0-100 score, a badge tier (BRONZE to GOLD), and evidence across verification, security, governance, transparency, data quality, and fulfillment dimensions. The protocol is designed to answer "should I trust this seller" without chaining multiple requests. Includes a search tool for querying the merchant registry. Useful when your agent needs to evaluate ecommerce sites, SaaS vendors, or any merchant before completing a transaction.
- tools
- 2
- transport
- STDIO
- last updated
- Mar 13, 2026
Tools
2 toolsPublic tool metadata for what this MCP can expose to an agent.
verify_merchantComplete merchant profile in one call: trust score (0-100), badge, 6-dimension breakdown, safety status (Google Web Risk), site classification, entity data, policy URLs, data sources.
Complete merchant profile in one call: trust score (0-100), badge, 6-dimension breakdown, safety status (Google Web Risk), site classification, entity data, policy URLs, data sources.
No parameter schema in public metadata yet.
search_registrySearch the OTR merchant registry, returning a paginated merchant list with scores, badges, and recommendations.
Search the OTR merchant registry, returning a paginated merchant list with scores, badges, and recommendations.
No parameter schema in public metadata yet.
Sponsors
Readme
OTR Protocol
The merchant trust layer for AI agent commerce
Deterministic, verifiable, open-source merchant trust scoring for the agentic economy
Protocol v4.1
Details
- Repository
- github.com/yb48666-ctrl/otr-protocol-by-orbexa
- Package
@otr-protocol/mcp-server- Transport
- STDIO
- Registry
- MCP registry, active