rexleimo/harness-cli/contextdb-autopilot

ContextDB Autopilot

Working directory: project root. Commands assume repo root; npm run contextdb runs from mcp-server/.

Overview

Use this skill only to persist and retrieve ContextDB state. ContextDB is no longer a prompt-injection layer.

Runtime rules:

• Do not auto-inject ContextDB packets, continuity summaries, persona overlays, user overlays, route guides, or handoff prompts into model prompts.
• Interactive startup may show a short local unfinished-task summary to the user; it must not pass that summary as model input.
• One-shot mode sends only the explicit --prompt text to the selected client.
• Durable workflow constraints belong in checked-in instruction files (AGENTS.md, CLAUDE.md, GEMINI.md) and repo-local skills.

Deprecated prompt-loading flags are intentionally unsupported:

• --startup-mode inject
• --context-mode
• --limit
• CTXDB_AUTO_PROMPT

If old docs, scripts, or user requests mention these as ways to preload memory, treat them as removed behavior. Use explicit search/timeline retrieval instead.

Script path: scripts/ctx-agent.sh

When to Use

• You want cross-CLI memory continuity (codex, claude, gemini, opencode) in the same project.
• You need automatic session creation, event logging, checkpoints, and continuity/handoff artifact writes.
• You want to retrieve prior facts explicitly before continuing work.

Do not use this skill just to execute a normal coding task. Let the current Rex Capability Command select the task Provider.

Required Pattern

Use one-shot mode (--prompt) when you want automatic logging around a single explicit request. The prompt is not augmented with ContextDB state.

scripts/ctx-agent.sh --agent codex-cli --project rex-cli --prompt "继续上次任务，先列出你会读取哪些 handoff 文件"
scripts/ctx-agent.sh --agent claude-code --project rex-cli --prompt "记录这个检查点并总结下一步"
scripts/ctx-agent.sh --agent gemini-cli --project rex-cli --prompt "基于我明确给出的文件继续分析"
scripts/ctx-agent.sh --agent opencode-cli --project rex-cli --prompt "执行这个明确请求，不自动加载历史"

Session Control

• Continue same session: --session <session_id>
• Mark terminal step: --status done
• Disable auto bootstrap for current run: --no-bootstrap
• Disable checkpoint (rare): --no-checkpoint
• Disable auto bootstrap globally: export AIOS_BOOTSTRAP_AUTO=0
• CODEX_HOME can be relative; wrappers normalize it against current working directory at runtime.

Interactive wrapper behavior:

• Direct codex/claude/gemini/opencode startup routes through AIOS wrappers without prompt injection.
• Startup prints only a local unfinished-task summary when tasks/handoffs exist.
• To resume, the user must explicitly name the task/handoff to continue before any ContextDB detail is loaded.
• Route execution defaults to live for team/subagent command templates.
• Override subagent runtime for routed commands with CTXDB_ROUTE_SUBAGENT_CLIENT=<codex-cli|claude-code|gemini-cli|opencode-cli>.

Bootstrap note:

• On first run in a workspace, ctx-agent may auto-create tasks/pending/task_<timestamp>_bootstrap_guidelines/* and tasks/.current-task if both are empty.

Example:

scripts/ctx-agent.sh \
  --agent codex-cli \
  --project rex-cli \
  --session codex-cli-20260303T010101-abcd1234 \
  --status done \
  --prompt "所有改动完成，写入检查点并给最终总结"

Verification

• Session files: .aios/context-db/sessions/<session_id>/
• Continuity artifact: .aios/context-db/sessions/<session_id>/continuity.json
• Handoff artifact: .aios/context-db/sessions/<session_id>/handoff.json
• Manual report export, when requested: .aios/context-db/exports/<session_id>-context.md

Retrieval Workflow

When retrieving from ContextDB, run search first and then inspect the timeline only for the matching session. Search finds relevant events by keyword; timeline provides chronological context that explains when and why those events occurred.

1. npm run contextdb -- search --query "<term>" --project <project> — find relevant events
2. npm run contextdb -- timeline --session <session_id> --limit 30 — see chronological context

Only then drill into specific events with event:get. If retrieval returns empty, run index:rebuild once and retry both commands.

Optional semantic rerank:

export CONTEXTDB_SEMANTIC=1
export CONTEXTDB_SEMANTIC_PROVIDER=token
npm run contextdb -- search --query "issue auth" --project rex-cli --semantic

Recovery:

• If retrieval returns empty unexpectedly, run index:rebuild once.
• Source-of-truth remains .aios/context-db/sessions/*; sidecar is rebuildable cache.

Compression contract

When a session grows past its budget, compress oldest-first under these rules. Compression reshapes what you carry forward; it never deletes session history — originals stay in .aios/context-db/sessions/* for the user and for audit.

Tier per event range (you declare the tier, the harness only records it):

• FULL — keep verbatim (recent rounds, open blockers, unconsumed handoffs).
• PARTIAL — trim raw tool output, keep conclusions plus evidence refs.
• SUMMARY — one conclusion line plus evidence refs per event cluster.
• EXCLUDED — drop pure noise (heartbeats, duplicates, empty polls).

Rules:

• Protect the most recent 2 rounds: never compress them below PARTIAL.
• Summarize, don't truncate: the summary stays agent-visible with evidence

refs so the next round can retrieve the original on demand.

• Every compression writes an auditable event: which range, which tier, and

the resulting refs. Compressed content stays recallable through search.

• State the remaining budget each round; cite it when you choose to compress.
• A compression event that loses an evidence ref is malformed — re-emit it.

Manual Report Export

Use context:pack only for explicit inspection/debug export. Do not feed the report into a model prompt by default. Never paste a full ContextDB Report into a model prompt; if a model needs historical evidence, retrieve only the specific event, checkpoint, or ref the user chose.

cd mcp-server
npm run contextdb -- context:pack \
  --session <session_id> \
  --limit 60 \
  --token-budget 1200 \
  --token-strategy balanced \
  --kinds prompt,response,error \
  --refs core.ts,cli.ts

Defaults:

• Event dedupe in report view is enabled.
• --token-strategy supports legacy|balanced|aggressive (recommended: balanced).
• You can disable with --no-dedupe when needed for debugging.