Keydler

Keydler is local-first, human-supervised task memory for people working with AI agents. It keeps completed work, active rules, and rejected approaches on one page, so an agent that loses context in a new conversation does not repeat work it already finished or retry an approach that was already ruled out.

The problem

When an AI agent loses its context, a conversation summary keeps the highlights but drops the constraints: the approach already ruled out, the dependency already refused, the step already completed. Keydler keeps that memory on the page itself, in the browser's local storage, and exposes it to AI agents through WebMCP (document.modelContext.registerTool) so an agent can read and write the same state a human is looking at.

The thirteen WebMCP tools this page registers

Four read tools and nine write tools. Writes require an active task and are versioned, so a write based on stale data is refused rather than silently applied.

resume_task — the canonical task state: id, version, rules, rejections, next step.
what_changed — what was written since the version the caller holds.
read_task_detail — paginated detail: full evidence, full reasons, older work, credential names.
search_task — search one term across steps, evidence, rules and refusals.
log_step — record a completed step and its evidence.
attach_evidence — attach proof that arrived after a step was logged.
set_next_action — redirect the task without inventing a step to hang it on.
add_constraint — propose a rule to follow.
reject_approach — propose ruling out an approach, with a mandatory reason.
add_decision — record the reasoning behind a choice, before a summary loses it.
ask_human — record a blocking question instead of guessing.
request_approval — ask permission for something irreversible, and wait for a human decision.
complete_task — close the task with a hand-over summary.

Keydler runs entirely in the browser: data is stored locally in IndexedDB, with no account and no server required to use it. The source is open under the MIT license at github.com/kymrapro-del/ChatGPT-WebMCP.

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