classifier.dev MCP
Two Streamable HTTP MCP endpoints from classifier.
Overview
The classifier.dev MCP server exposes the same classification backend as the HTTP API through streamable HTTP tools such as classify_texts. Setup documentation lives on classifier.dev/mcp-setup.
Problem: Agents need classify tools that return structured probabilities instead of markdown tables in chat.
Built for: MCP hosts wiring streamable HTTP tools for moderation, routing, and analytics agents.
First indexed on Jev Directory: 2026-09-19
Creator and team
- Name
- Michael Chomsky
- Organization
- classifier.dev
- Handle
- @michael_chomsky
How Jev is used
- Role in the product flow
- Agent tool transport to the same Jev classification core as classifier.dev
- Primitives
- ChoiceScore
- State in
- Tool payloads with texts and label dimensions (per MCP tool schema on classifier.dev).
- Decision out
- Same probability vectors as the HTTP API; MCP is transport only.
- Agent calls MCP classify_texts (or related tools)
- Server forwards to classifier.dev Jev tiers
- Agent thresholds probabilities in code
MCP does not change the System One question shapes: tools call into the classifier.dev Worker stack documented in the main repository. Agents should still think in terms of fast Jev probabilities and optional smart-tier escalation rather than parsing model prose from tool results.
Features and stack
Features
- Streamable HTTP MCP documented on classifier.dev/mcp-setup
- Free tier without API key for light experiments (catalog listing)
- Multi-label and dimension aware tools
- Pairs with the classifier.dev HTTP product profile
Stack
- MCP streamable HTTP
- classifier.dev Worker
- TypeSafe System One
Pricing: Matches classifier.dev tier limits.
Links
FAQ
- Do MCP tools use a different model than curl?
- No. They hit the same classifier.dev backend described in the main repository.
Related learn guides
Original Jev guidance that pairs with this product pattern.
- Jev & TypeSafe
A primer for builders who need to know what Jev is, who it is for, and when TypeSafe docs should take over from this directory.
- Jev use cases
The patterns builders actually search for: moderation, routing, triage, RAG verify, and agent gates.
Related products
Hand-picked neighbors with rich profiles or overlapping tags.