capability-evolver

# Capability Evolver This plugin gives the agent a **persistent, auditable evolution memory** built on the Genome Evolution Protocol (GEP). The goal is simple: stop re-solving the same problem from scratch. Past outcomes — what worked, what failed — are carried forward into future sessions. ## How it works (automatic) Three hooks run on their own; you don't invoke them: - **`SessionStart`** — injects a short summary of recent **successful** outcomes for *this workspace* (filtered to score ≥ 0.5, < 7 days old, max 3) as context. The agent sees "here's what worked recently" before it starts. - **`PostToolUse`** (Write/Edit) — scans edits for improvement signals (`log_error`, `perf_bottleneck`, `capability_gap`, `test_failure`, …) and nudges the agent to record the outcome when relevant. - **`Stop`** — at the end of a task, collects the git diff, classifies the outcome, and appends it to the evolution memory graph (scoped to the workspace so other projects' memory never leaks in). Memory is written to a local JSONL graph. With no extra setup it lands in `~/.evolver/memory/evolution/memory_graph.jsonl`; inside an evolver-managed project it lands under that project's `memory/evolution/`. ## What you (the agent) should do For any **substantive** task — a feature, a non-trivial fix, a refactor: 1. **Before starting**, check the injected evolution memory (it arrives as session-start context). If a recent successful outcome matches the task, reuse that approach. If a recent *failure* matches, avoid repeating it. 2. **Do the work.** 3. **After finishing**, the `Stop` hook records the outcome automatically. You don't need to call anything — but if the task had a clear lesson worth a one-line note, say so in your final message so it's captured in the diff context the hook reads. Trivial or purely conversational turns don't need this — skip it. ## Signals The hooks classify work by signal. Knowing the vocabulary helps you describe outcomes in terms the memory graph indexes well: | Signal | Fires on | |---|---| | `log_error` | errors, exceptions, failures in the diff | | `perf_bottleneck` | timeout / slow / latency / OOM | | `capability_gap` | "not supported" / "not implemented" | | `user_feature_request` | adding a feature / new module | | `test_failure` | failing tests / assertions | | `deployment_issue` | build / CI / pipeline / rollback | ## Full pipeline (optional) The bundled hooks record outcomes and recall them — that works on its own. To get the **full evolution engine** (automated log analysis, the review-and-solidify cycle that proposes and applies code improvements), install it: ```bash npm install -g @evomap/evolver ``` This gives you the engine's CLI (e.g. `evolver run`, surfaced by the `/evolver:run` command) to run that pipeline separately — the hooks do not auto-detect or invoke it. The memory the hooks record is what the pipeline consumes. See the plugin README for connecting an EvoMap Hub node for community strategies. ## MCP tools This plugin bundles a lightweight MCP bridge (`evolver-proxy`) exposing the local EvoMap Proxy mailbox: - `evolver_recipe_search` — default first step: find Hub Recipes (ordered Gene/Capsule DNA). **Call this before substantive networked work.** - `evolver_recipe_express` — express a Recipe by id. Hub unfolds Gene then Capsule steps; do not parse recipe JSON locally. - `evolver_search_assets` — Fallback: find genes/capsules by free-text `query` and/or signal keywords when no Recipe matches. - `evolver_status` — Proxy state (node id, pending counts, last sync). - `evolver_fetch_asset` / `evolver_publish_asset` / `evolver_distill_conversation` / `evolver_poll`. Use `evolver_distill_conversation` only when the current conversation produced a concrete reusable capability. Include a summary, strategy steps, artifact paths/links, and validation evidence so the Proxy can reject weak or noisy candidates. The tools degrade gracefully when the Proxy isn't running (the local memory hooks still work). The richer, full `gep_*` surface is the separate [`@evomap/gep-mcp-server`](https://github.com/EvoMap/gep-mcp-server) — add it to your MCP config if you want it; the two compose.