Stop buying Semrush just so your agent can run once

What it does

treg is a proxy and registry that sits between your agent and roughly 2,600 endpoints from about 40 providers. You point your agent at a single base URL with one token, and treg handles authentication server-side—injecting keys, OAuth tokens, or CLI credentials so they never reach the caller. The hosted catalog covers SEO, social, enrichment, ads, and scraping tools priced per call, while a parallel system lets teams register their own private keys, CLIs, and SKILL.md recipes under the same token.

The interesting bit

The clever part is the credential ladder: if your team registered its own key for a provider, treg uses it; if not, it falls back to treg’s own account and deducts from a prepaid balance. Out of money returns an HTTP 402 with machine-readable cost fields, so an agent can top itself up without human intervention. The proxy relays requests faithfully and never models the upstream, which means it survives API changes without a rewrite.

Key highlights

• ~2,600 catalogued endpoints across ~40 providers, searchable by task rather than vendor name
• Per-call pricing from about a cent, with a small free balance for new teams
• Server-side auth injection for HTTP APIs, vendor CLIs, and OAuth connections with auto-refresh
• Team-scoped orgs with role-based access and per-member tool restrictions
• Self-hostable FastAPI server with a dashboard, OpenAPI docs, and an llms.txt onboarding file for agents

Verdict

Worth a look if you are building agents that need real-world data but refuse to juggle forty SaaS subscriptions. Skip it if you only ever call OpenAI and nothing else.