fast-jev-compaction
Replaces the compaction summary with Jev decisions: every tool call and result scored in one request, stale ones dropped, everything kept stays verbatim.
Context compactionSDK or client library
Home / Coding agents
Coding agents
57 entries
Claude Code
17jev-router
Routes each task to the cheapest Claude model that can handle it.
Model routingPlaygrounds and demos
winnow
Judges every tool result before it enters context, so the window fills slower instead of being cleaned later.
Context compactionPlaygrounds and demos
yoshi
Context-pruning proxy for Claude Code and Codex, with the savings measured rather than claimed.
Context compactionPlaygrounds and demos
skillranker
Rust CLI and hooks that rank installed skills for the next step using live session context, with abstention.
Playgrounds and demosTool gating and guardrails
jcm-router
Local proxy that picks model and effort per message and leaves the cached main chat alone.
Model routingPlaygrounds and demos
jev-skillful
Per-prompt router over skills, MCP servers, agents, and commands, and it measures whether the injection helped.
Context compactionMCP and agent integration
limpet
A Stop hook that keeps the agent from stopping too early, judged against plain-language rules.
Tool gating and guardrails
jevwire
MCP server, embeddable decision model, and an escalate-only plugin that can make the harness stricter but never looser.
Tool gating and guardrailsMCP and agent integration
jev-code
Command-line toolkit that coding agents hand judgment-heavy work to, one typed Jev workflow per request.
Output verificationCode review
vexjoy-agent
Agent toolkit whose `/d` command picks the specialist agent, skill, and pipeline with one Jev call, plus an optional Jev auto-compact plugin.
Tool gating and guardrailsOutput verification
save-token-jev
Compaction that asks Jev which tool calls still matter and keeps the rest verbatim, with adapters for Claude Code, Codex, OpenCode, and raw API transcripts.
Context compactionSDK or client library
jev-pruner
Trims long Bash output with Jev after the command runs and before the model sees it; short output, errors, and structured formats pass untouched.
Context compaction
jev-rules
Scores your standing rules against each prompt and delivers only the ones that apply, once per session.
Context compactionPlaygrounds and demos
jev-belay
Stop hook that blocks an unverified "done": reads the transcript for evidence and, only when files changed with no passing check since, spends one four-question Jev call; fails open on every error path.
Output verificationTool gating and guardrails
jev-use
Hands the Claude Code, Codex and pi steps that need no text output to Jev, with a typed escalation contract for everything it should not decide.
Tool gating and guardrailsContext compaction
jev-skill-router
Hook that asks Jev which installed skill fits each prompt and logs the answer; in the author's week of shadow mode, 28 of 539 suggestions were followed by a call of that skill, and the author then removed it.
Benchmarks and evalsPlaygrounds and demos
Codex
3jev-codex-router
Picks model, thinking depth, and speed mode for every Codex turn.
Model routingPlaygrounds and demos
codex-jev-router
Uses Jev to select the model and reasoning effort for Codex subagents, with confidence gates and a Sol fallback.
Model routingMCP and agent integration
Astra-Ares
Has Jev pick the reasoning effort and how long to hold it for a running Codex task, on a patched Codex CLI built from upstream source.
Playgrounds and demos
Pi
14pi-jev by y0usaf
A measured tool-call gate plus a `jev_ask` tool for typed answers inside Pi.
Tool gating and guardrailsOutput verification
pi-warden
Guardrails that steer instead of interrupt: irreversible calls, off-task calls, stuck loops, unverified done claims, about 250 ms each.
Tool gating and guardrailsOutput verification
pi-jev-auto-mode
Auto-approves bash, write, and edit calls semantically and fails closed when it cannot decide.
Tool gating and guardrailsPlaygrounds and demos
pi-jev by TheoOliveira
Semantic tool routing and typed decisions as Pi tools.
Output verificationContext compaction
pi-jev-router
Automatic model routing for Pi through the Vercel AI Gateway.
Playgrounds and demosModel routing
pi-fast-jev-compaction
The verbatim compaction idea, ported to Pi.
Context compactionPlaygrounds and demos
bicameral
Hybrid harness for Pi: an LLM writes the code, Jev reflexes gate every call as allow, confirm, block, warn, or steer.
Tool gating and guardrailsOutput verification
pi-quiet-ask
Jev as the Pi coding agent's quiet decision layer.
Tool gating and guardrailsOutput verification
pi-typesafe-jev
Pi extension exposing Jev judgments as five Pi tools.
Output verificationTool gating and guardrails
pi-typesafe
Batched evaluation tool, terminal playground, and a typed API for Pi extension authors.
Playgrounds and demosOutput verification
pi-heed
Checks every side-effecting tool call against what you said earlier in the session, so "review only" still holds after compaction.
Tool gating and guardrailsContext compaction
pi-jev-sentinel
Checks Pi tool calls, tool outputs, and replies for risky actions and prompt injection, with user approvals, context re-checks, secret scrubbing, and optional task pinning.
Tool gating and guardrailsOutput verification
pi-mcp-adapter
Opt-in typed evaluation and semantic search over MCP tool results, behind a per-server data-egress allowlist.
Context compactionOutput verification
mu
Coding agent and desktop app built on Pi that hands 38 routine decisions to Jev, from which tool output enters the context to prompt-injection screening and checking a "done", each one switchable between active, shadow and off with every verdict in a local ledger; pre-release.
Tool gating and guardrailsOutput verification
Hermes
6typesafe-skill-router
Names the one skill worth loading before the model call; stdlib only, about a tenth of a cent per turn.
Context compactionPlaygrounds and demos
jev-agent-skill-router
Confidence-aware skill routing with an abstain path.
Model routingTool gating and guardrails
hermes-jev
Typed decisions, ranking, verification, and an opt-in tool gate.
Tool gating and guardrailsOutput verification
ask-jev-skill
Lets Hermes and similar agents ask Jev directly.
Output verificationTool gating and guardrails
hermes-jev-plugin
Four Hermes tools for atomic checks, routing, and rubric scoring; listed in the Hermes plugin catalog.
Output verificationTool gating and guardrails
hermes-jev-approvals
Approves, denies, or escalates flagged shell commands before they run; vendor-reported speedups.
Tool gating and guardrailsCommand line tooling
Agent Zero
1a0-typesafe-ai
Typed tools and probability cards for Agent Zero.
Output verificationPlaygrounds and demos
Any agent
7skillbox
Self-hosted, versioned skills library served over MCP, with Jev recommending which skill to load.
MCP and agent integrationPlaygrounds and demos
jev-mcp by jkudish
The first MCP server for Jev, and still the most linked.
Output verificationMCP and agent integration
jev-mcp by blakestone-x
Classify, score, check, match, and screen, with confidence on every answer.
MCP and agent integrationOutput verification
Jevbridge
ACP and MCP adapter that pairs Jev with any LLM for computer use and typed decisions.
MCP and agent integrationTool gating and guardrails
jev-eval-mcp
Eval-first MCP server: prototype a question, map it over many items, then measure variants against labeled examples with a threshold sweep.
Benchmarks and evalsOutput verification
azdaja
Recursive language model layer for Claude Code, Codex, Gemini, and OpenCode that keeps full sources in a local evaluator; Jev is an optional leaf for reranking, verification, classification, and semantic joins, with budgeted, checkpointed batches.
Output verificationClassification and extraction
Skills for writing Jev code
9building-with-jev-skill
Skill for writing and improving programs that call Jev.
SDK or client libraryOutput verification
jev-system-architect
Finds the fuzzy judgment in a system and turns it into small Choice, Score, and Noul primitives.
Classification and extractionOutput verification
jev-judgment
Sends a coding agent's closed judgments to Jev instead of the chat model.
Output verificationTool gating and guardrails
skills by fabricioctelles
Agent-skill directory that can score subjective evaluation criteria with Jev.
Output verificationPlaygrounds and demos
Augustus
Skill for deciding where a typed judgment belongs at all and what stays in code; a companion to the official skill, not a replacement.
Benchmarks and evalsTool gating and guardrails
hermes-jev-skills
Hands an agent's small decisions to Jev: which model answers the turn, which skills to load, which passages matter, which turns survive compaction.
Context compactionModel routing
Stanley
Coding CLI where Jev routes a plain-language request to one deterministic workflow, and that workflow asks Jev fixed-choice questions about the evidence it gathered.
Code reviewOutput verification
JevHarness
Has an LLM write a task-specific harness that turns observations into Jev questions, then freezes it and improves it from rewards and full execution traces.
Playgrounds and demosBenchmarks and evals
building-with-typesafe-jev
Skill that packs the Choice, Score, and Noul API shapes, confidence thresholds, and 150+ community projects with a code sketch each, so an agent can design without fetching the docs.
Classification and extractionPlaygrounds and demos