# deepseek-ai/deepseek-harness

DeepSeek Harness: Everything is a Plugin.

Repository: https://github.com/deepseek-ai/deepseek-harness
Canonical: https://ross.abutalabs.com/products/deepseek-harness
Homepage: https://deepseek.com/harness
Language: TypeScript
License: MIT
License Family: permissive
Topics: cordis, dsh, dsh-plugin, ai-agents
Last push: 2026-08-21T12:35:08+00:00

## Health v2 (maintenance only)
Score: 65/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 60, longevity 1
- inputs: {"age_days": 20, "days_push": 12, "days_rel": 12, "gap_med": 1, "n_releases_24m": 4}
- flags: prerelease_only, young
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 197984, forks 22502 (observed 2026-08-28T04:12:28.423653+00:00)

## What it is
DeepSeek Harness (dsh) is an open-source agent harness by DeepSeek AI built on the Cordis plugin kernel, where every agent capability (models, tools, skills, sessions, sandboxes, storage, scheduling, UI) is a swappable plugin. It ships with a Web UI and multiple run modes (standard coding agent, PTC code-mode, minimal, and creative preset-building mode).

## Use cases
- run a local coding agent with file editing and shell tools
- build custom agent presets by composing plugins
- compose multi-step tool calls as a single TypeScript program
- replay and inspect agent trajectories and tool call logs
- benchmark models in a minimal two-tool environment
- self-host an agent harness with a web UI

## When to avoid
- you need a stable API - it is a developer preview with breaking changes expected
- you want a turnkey hosted agent product rather than a self-run harness

## Facets
- artifact type: framework
- maturity: experimental
- function: agent-framework, plugin-system, chat-interface, webhook, mcp
- domain: large-language-models, developer-tools
- platform: cross-platform, cli, self-hosted
- tags: agent-harness, cordis, dsh, everything-is-a-plugin, coding-agent, trajectory-logging, developer-preview, ai-agents, automation, nodejs, web-server

## Member repositories
- deepseek-ai/deepseek-harness (main) score 65

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:12:28.423653+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:10:30.751733+00:00, confidence not recorded.
  - readme: https://github.com/deepseek-ai/deepseek-harness (fetched 2026-08-28T04:12:28.423653+00:00, sha cd7f5d59b4e9)
  - homepage: https://deepseek.com/harness (fetched 2026-08-28T17:22:18.576552+00:00, sha 7cdd55d98509)
- Data as of 2026-08-30T08:39:29.467469+00:00.