dsh-swarm-router

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A DeepSeek Harness bundle that turns a batch of heterogeneous tasks into a sub-agent matrix swarm: it routes each task to the most suitable model from an OpenRouter-like gateway plus the cfgpu.com/llm/square catalog, then dispatches each assignment in parallel as a real in-process subagent (or a direct ctx.llm call) pinned to that model — quick tasks land on fast/cheap models, hard tasks on strong reasoning models. A formal design write-up lives in docs/PAPER.md.

子智能体矩阵蜂群：任务是行、候选模型是列，路由器为每一行选中一格，再通过 DSH 的 ctx.subagents 把每格变成一个绑定到所选模型的子智能体并行下放，按任务难度匹配模型、省时提效。论文见 docs/PAPER.zh.md。

The four contributions

Tools

The router rules (how a task becomes a model)

A task is { id, kind, prompt, maxTokens? } where kind ∈ {reasoning, coding, longcontext, fast, general}. The router is pure and O(1) per task — it spends zero model-time deciding which model; the saving goes into parallel dispatch.

Step 1 — infer the kind. An explicit kind wins; otherwise the first truthy hint among {reasoning, coding, longContext, fast} is used, defaulting to general.

Step 2 — capability gate (hard filter). Each kind requires a capability tag; a model lacking it scores -∞ and is dropped:

• reasoning requires reasoning; coding requires coding; longcontext requires longContext; fast/general require nothing.

Step 3 — effort-matched weighted score. For the surviving models, a kind-specific linear score is computed from the catalog's 1–10 ranks (strength, speed, cost) and capacities (contextWindow, maxTokens):

Step 4 — penalties (the effort-matching core).

• kind ≠ fast and model.fast → −2.0 (a fast/cheap tier is under-powered for quality work).
• kind = general and model.reasoning → −2.0 (a reasoning flagship is overkill — slower, pricier — for general work).
• kind = coding and model.reasoning → −0.5 (reasoning helps code but is not required; slight demotion vs. a pure coding-strong peer).
• model.unstable → −4 (route was flaky during catalog capture).
• model.available = false → −1000 (e.g. OpenRouter without a key).
• Ranking feedback boost (when useRankings: true): successRate ≥ 0.9 over ≥ 3 trials → +1.5; successRate ≤ 0.4 → −3.0. Real outcomes override the static catalog.

Step 5 — pick & explain. Highest score wins; ties broken by strength, then lexicographic id (deterministic). The tool returns the winner plus top-5 candidates with scores and a human-readable rationale.

Why these numbers. The penalties are asymmetric on purpose: rewarding cheapness on quality tasks is the failure mode this design exists to avoid, so the fast-model penalty (−2.0) and the reasoning-overkill penalty (−2.0) are large enough to flip a tie but small enough that a genuinely-strong cheap model can still win general when it earns it. The ranking boost (±1.5/−3.0) is smaller than the static penalties so a model must clear a real quality bar before feedback can override the catalog.

Why the design

• Matrix, not a single pipeline. A diverse batch fans out across several models — the distinctModels summary is the signal that routing is doing something rather than collapsing to one model.
• Distinct LLM routes (cfgpu-swarm, openrouter), not the machine's cfgpu. llm-pi-ai merges provider routes by key (composition base ∪ settings); distinct keys union without clash, so the swarm's catalog never disturbs the orchestrator's own model. A patch replaces a row's whole config, so we add routes rather than editing settings.
• Pure router, then dispatch. Separating "decide" from "do" makes routing free, testable, and preview-able (swarm_route_preview), and lets dispatch (direct vs subagent) be chosen per task.
• direct mode for token truth. A one-shot ctx.llm.stream reads the usage chunk directly — exact per-call accounting including cfgpu's reasoning_tokens (when the adapter emits it). subagent mode is for tasks needing the agent loop; its usage is captured via a global llm/stream listener attributed by sessionId == child run.id (the only mechanism that catches child calls without scope filtering — confirmed by source research).
• Feedback closes the loop. Static catalog ranks are author guesses; real task outcomes, persisted and folded into a boost, let a model that looks strong but fails in practice get demoted, and a sleeper get promoted.

Install & run

# against the default DSH_HOME (~/.dsh — needs the cfgpu credential there)
dsh plugin --profile headless add github:r600a-code/dsh-swarm-router
dsh --profile headless --dump-config | grep -E 'cfgpu-swarm|swarm-router'

# sandboxed away from ~/.dsh: a workspace-local DSH_HOME seeded with the credential
export DSH_HOME=/path/to/.dsh-home   # put .credentials.yaml (CFGPU_API_KEY) + settings.yaml there
dsh plugin --profile headless add /path/to/dsh-swarm-router

The cfgpu route needs CFGPU_API_KEY in $DSH_HOME/.credentials.yaml (or env). The OpenRouter route needs OPENROUTER_API_KEY; without it the router reports it unavailable and never dispatches to it, so the profile still boots.

Benchmark

benchmark/benchmark.json is the minimal subset: 5 cheap, heterogeneous tasks across fast/reasoning/coding/general. Success is judged by content (expected answer substring / CJK), not by the run merely completing.

dsh --profile headless "$(cat benchmark/benchmark_prompt.txt)"          # subagent mode, 5 tasks
node benchmark/verify_benchmark.mjs                                     # 27/27 green
dsh --profile headless "$(cat benchmark/benchmark_direct_prompt.txt)"   # direct mode, 3 tasks
node benchmark/verify_benchmark.mjs benchmark_direct_RESULT.json        # 31/31 green

Recorded: subagent 5 tasks → 4 distinct real cfgpu models, all correct (17×23=391, bat-ball=0.05, real is_prime, CJK translation, widgets=5). Direct 3 tasks → exact token capture per task.

Files

• package.json — dsh.bundle manifest.
• cordis.patch.yml — cfgpu-swarm + openrouter routes, swarm-router plugin row.
• index.js — the plugin: service + 6 tools.
• catalog.js — registry loader + catalog builder.
• router.js — the pure, effort-matched router.
• ranking.js — feedback → ranking + routing boost.
• store.js — rankings.json + usage.json persistence.
• models/registry.json — the model aggregation registry.
• scripts/validate-registry.mjs — registry validator (CI).
• CONTRIBUTING.md — add-a-model PR flow.
• benchmark/ — tasks, prompts, recorded results, verifier.
• docs/PAPER.md / docs/PAPER.zh.md — formal design write-up.

Marketplace

• Official discoverability: the dsh-plugin GitHub topic (applied).
• Community curated list: PR to awesome-dsh-plugin; the dsh-market plugin pulls from it automatically.

License

MIT.