@dexto/image-local

Local development image for Dexto.

This package default-exports a typed DextoImage (no side effects, no registries). Hosts (CLI/server/apps) load the image and resolve config → concrete services via @dexto/agent-config.

What’s included

• Storage factories: local filesystem blob store, SQLite database, in-memory cache (plus in-memory alternatives; Postgres/Redis factories are included but require optional deps)
• Tool factories: builtin, filesystem, process, todo, plan, agent-spawner
• Hooks: content-policy, response-sanitizer
• Compaction: reactive-overflow, noop
• Logger: core defaultLoggerFactory

CLI usage

Install the image into the Dexto image store, then reference it from YAML:

dexto image install @dexto/image-local

# agents/my-agent.yml
image: "@dexto/image-local"

systemPrompt:
  contributors:
    - type: static
      content: You are a helpful assistant.

llm:
  provider: anthropic
  model: claude-sonnet-4-5-20250514

tools:
  - type: filesystem-tools
    allowedPaths: ["."]
    blockedPaths: [".git", "node_modules"]
  - type: process-tools
    securityLevel: moderate

Notes:

• Omit tools: to use image.defaults.tools.
• Storage defaults come from image.defaults.storage (override with storage: in YAML).
• filesystem-tools.allowedPaths defines the static sandbox. In manual mode, attempts to access paths outside the sandbox trigger a directory access approval prompt; if approved, access is granted for the current session or for a single occurrence.

App usage (direct import)

import imageLocal from '@dexto/image-local';
import { DextoAgent } from '@dexto/core';
import { loadAgentConfig, enrichAgentConfig } from '@dexto/agent-management';
import {
  AgentConfigSchema,
  applyImageDefaults,
  resolveServicesFromConfig,
  toDextoAgentOptions,
} from '@dexto/agent-config';

const configPath = './agents/my-agent.yml';
const raw = await loadAgentConfig(configPath);
const withDefaults = applyImageDefaults(raw, imageLocal.defaults);
const enriched = enrichAgentConfig(withDefaults, configPath);

const config = AgentConfigSchema.parse(enriched);
const services = await resolveServicesFromConfig(config, imageLocal);

const agent = new DextoAgent(toDextoAgentOptions({ config, services }));
await agent.start();