Alpha implementation of the ECC-V1.0 specification. Source code now
exists (see below); the normative contract remains ECC-V1.0.md.
DSH Lattice is a planned DeepSeek Harness (dsh) plugin that adds a provider-neutral multi-agent orchestration facade: declarative teams, durable task graphs, addressable rooms/groups, and stable result envelopes. It is intended to sit on top of the existing Harness subagent seam (ctx.subagents, send_message, report, session log, fork/resume) without reimplementing the agent loop, persistence store, or a second runtime.
This project is an independent community design. It is not affiliated with, endorsed by, or maintained by DeepSeek AI. "DeepSeek", "DeepSeek Harness", and "dsh" are trademarks of DeepSeek AI.
pnpm install
pnpm build && pnpm typecheck && pnpm test
pnpm example # runs examples/run-example.mjs
The example mounts the plugin on a minimal Cordis-like context, runs a
three-member coordinate orchestration with the built-in local provider,
and prints the deterministic result envelope, agent list, engine status and
a shim demo.
Security
See SECURITY.md. Highlights: one-tool-per-caller
(lattice.uto_run), override authorization with authorization_denied
(never silent degradation), REQUIRED tenantId with cross-tenant rejection,
credentialRef-only secrets with redaction and leak scan, shell: false
local execution, at-least-once delivery with deterministic dedup, hop-count
loop suppression, and no exactly-once / no guaranteed provider KV-cache-hit
claims.
Correct known facts (preserved from the design stage)
DeepSeek Harness currently ships an MCP client, not a public MCP
server.
Existing send_message/report are parent-child limited; the shim
preserves that constraint.
One-shot provider capabilities vary widely; the capability matrix
documents required-vs-observed per provider.
No exactly-once or guaranteed provider KV-cache-hit claims are made.
License
Licensed under the Apache License, Version 2.0. See LICENSE.