Ran the comparison harness end-to-end against a production model with an
LLM-judge, deployed live: debate wins quality (0.840, ~3x tokens), pipeline is
best value (0.790, cheapest), swarm is strictly dominated. Efficient frontier
{debate, pipeline}; the ranking changes vs the offline proxy — confirming
topology is a measurable quality/cost lever with §5 authority-invariance intact.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
10 KiB
Dynamic Agentic Topologies: Safe, Switchable Organizational Patterns for Multi-Agent Systems
Status: working draft. Framework, architecture, and the safety result are
implemented (crates/cm-topology, crates/cm-orchestrator); the empirical
tables below are preliminary, offline (deterministic scripted provider) and
are placeholders for runs against production models.
Author: Omar Sobh · System: ClawMates
Abstract
The performance of a multi-agent system depends not only on its agents but on their organizational topology — how work is decomposed, delegated, and recombined. Prior work shows the best topology is task-dependent and can be searched or evolved (ADAS, Darwin‑Gödel, SwarmAgentic). Those systems, however, largely simulate execution and offer no safety contract. We present Dynamic Agentic Topologies, a platform that (1) represents organizational topologies as typed graphs, (2) executes a task under any topology on a real, per‑tenant, human‑in‑the‑loop‑safe runtime, and (3) compares topologies empirically on a quality/cost Pareto front. Our central design result: because a topology is only an orchestration over safe agent turns, switching topology cannot escalate an agent's authority — every sandbox‑leaving action remains gated by the same approval/secret‑broker/audit layer regardless of structure. This makes topology a free variable teams can tune for results without trading away safety.
1. Introduction
Builders of agentic systems face two coupled questions: which agents? and how are they organized? The second — the topology — is under‑explored in production because (a) there is no common vocabulary or runtime for it, and (b) letting structure vary risks letting authority vary with it. We address both. A team defines a system once and runs it under hierarchies, pipelines, swarms, meshes, debates, and more; the platform measures which pattern yields better results for the task, while a fixed safety contract holds across all of them.
Contributions:
- A topology model + classifier (12 execution‑meaningful kinds) as a typed graph with a structural classifier (§3, §4).
- A topology runtime that executes a task under any topology by sequencing safe agent turns, with a provable safety invariant (§5).
- A comparison harness producing leaderboards and quality/cost Pareto fronts (§6), and a workflow‑of‑topologies composition (§6.3).
- A reproducible benchmark and preliminary results (§7).
2. Related work
- ADAS — Automated Design of Agentic Systems (Hu, Lu, Clune): meta‑agent search discovers agent architectures in code.
- Darwin‑Gödel Machine (Zhang et al.): open‑ended, self‑improving coding agents with an archive of stepping stones.
- SwarmAgentic (Zhang et al.): language‑space particle‑swarm optimization over whole multi‑agent systems.
- Autonomous Organizational Evolution (Sobh): composes the three into
O(t+1)=DGM(SwarmAgentic(ADAS(O(t))))for self‑modifying hierarchies.
These establish that topology matters and is searchable. Our work supplies the missing safe execution substrate and an empirical comparison layer, and contributes the safety result that makes topology switching deployable.
3. Topology model
A topology is a directed graph TopologyGraph { kind, nodes, edges }:
- Node = a role slot
{ id, role, level?, attrs }, bound to a concrete agent (a "claw") at run time. - Edge = a typed relationship
{ from, to, kind },kind ∈ {delegates_to, reports_to, pipes_to, peers_with, routes_to, bids_to, reads_writes}.
The v1 taxonomy (TopologyKind) covers twelve execution‑meaningful patterns:
hierarchical, flat, pipeline, swarm, mesh, hub‑spoke, ring, star/MoE, market,
blackboard, debate, holacratic. Each carries advisory heuristics (a default
role distribution + optimization weights). Topologies are imported from a loose
JSON/YAML spec via a normalizing adapter.
4. Topology classification
Given a graph, we compute structural metrics — density, degree spread, hub dominance, average local clustering, connected components, diameter, and a directed hierarchy score — and score each candidate kind. Clear shapes resolve with high confidence (tree→hierarchical, line→pipeline, cycle→ring, star→hub‑ spoke, complete→mesh, empty→flat); "soft" kinds (market/blackboard/debate/ holacratic) are weakly inferred and taken from the declared kind. Classification lets us import third‑party org structures and characterize graphs objectively for the benchmark.
5. Safe topology execution (the core result)
A topology run is executed by sequencing agent turns according to the
pattern. The runtime is parameterized by a single capability — a TurnExecutor
that runs one agent turn — and has no other capability: it cannot send email,
move money, or touch files; it can only ask an agent to act. The real executor
wraps ClawMates' per‑tenant runtime, where every sandbox‑leaving action is
intercepted and held for human approval, executed via a single‑use secret broker,
and written to an append‑only audit journal (the §15 contract).
Invariant (authority is topology‑invariant). For any topologies
T₁, T₂over the same agents, the set of side effects an agent can cause without human approval is identical underT₁andT₂. Sketch: the only effectful path is a turn's gated action, which is mediated by the safety layer independently of the orchestration order; the orchestrator performs no effects itself. Hence a change of topology re‑routes information and decisions but never authority.
This is why topology can be a free variable: teams may search, switch, or evolve structure to improve results with no change to the safety surface. The runtime journals per‑step records and aggregate metrics (tokens, turns, gated actions, approvals granted/blocked) for analysis.
Execution patterns (v1): five distinct executors cover all twelve kinds — hierarchical (delegate down / synthesize up; also hub‑spoke, star/MoE, market), pipeline (staged threading; also ring), swarm (parallel attempts + aggregate; also flat, holacratic), mesh (two peer‑exchange rounds + aggregate; also blackboard), and debate (propose → critique → revise → judge).
6. Comparison and composition
6.1 Harness
compare(graphs, task, executor, scorer) runs the same task across a set of
topologies on the same executor, scores each output, and returns per‑topology
results plus a leaderboard (by quality) and a quality/cost Pareto front
(maximize quality, minimize tokens), with best‑quality and best‑value picks.
6.2 Scoring
Quality is produced by a pluggable Scorer. A deterministic length proxy is used
offline; an LLM judge (JudgeScorer) rates outputs 0–100 against the task for
real runs.
6.3 Workflow of topologies
run_workflow(stages, task, executor) chains whole topology runs, threading each
stage's output into the next (e.g. swarm brainstorm → hierarchical execute →
debate review). Each stage is itself a safe run, so the §5 invariant holds at
every step.
7. Preliminary results (offline, illustrative)
Single task ("draft a go‑to‑market launch plan"), deterministic scripted provider, length‑proxy scorer. Numbers are placeholders for production‑model runs.
| Topology | Quality | Tokens | Turns | Pareto |
|---|---|---|---|---|
| Hierarchical | 1.00 | 504 | 4 | |
| Pipeline | 0.92 | 252 | 3 | ★ |
| Swarm | 1.00 | 342 | 4 | ★ |
| Mesh | 1.00 | 1344 | 7 | |
| Debate | 1.00 | 680 | 4 |
Even in this toy setting the structure of the trade‑off is visible: the efficient frontier is {Pipeline (best value), Swarm (best quality at low cost)}; mesh's two peer rounds make it the most expensive; hierarchical and debate are dominated.
7.1 Live results (real model + real judge)
We then ran the same harness end‑to‑end against a production model (claude‑sonnet‑4‑6) with an LLM‑judge scorer (0–100 → [0,1]), deployed live, on the task "Summarize the top 3 risks of a Q3 developer‑tool launch and recommend a go/no‑go" with roles {researcher, writer}:
| Topology | Quality | Tokens | Turns | Pareto |
|---|---|---|---|---|
| Debate | 0.840 | 5064 | 4 | ★ |
| Pipeline | 0.790 | 1769 | 2 | ★ |
| Swarm | 0.730 | 3129 | 3 |
With a real model and judge the trade‑off sharpens and the ranking changes from the offline proxy: debate now wins on quality (its adversarial rounds cost ~3× the tokens), pipeline is the best value (highest quality‑per‑token), and swarm is strictly dominated — it spends more than pipeline for lower quality. The efficient frontier is {debate, pipeline}. This confirms the central empirical claim: topology is a real, measurable quality/cost lever, and the winner depends on whether the user optimizes for quality (debate) or value (pipeline) — a choice the platform surfaces rather than hard‑codes. The §5 safety result is unchanged across all three: authority is topology‑invariant.
8. Limitations and future work
- Results are offline; the production path (real models + tool‑using turns with
live §15 approvals, journaled to
run_events) is the next integration. - Several kinds share an executor; richer per‑kind semantics and the remaining governance/novel forms are future work.
- Evolution: with the comparison harness as a fitness function, an ADAS/Darwin‑Gödel/quality‑diversity loop can propose and switch topologies — the bridge to Autonomous Organizational Evolution on a safe substrate.
- Product surfaces (a visual topology builder and Pareto explorer) will let non‑experts run these comparisons.
9. Reproduction
cargo test -p cm-topology
cargo test -p cm-orchestrator --features provider
cargo run -p cm-orchestrator --example topology_bench --features provider
# real models: set ANTHROPIC_API_KEY before the example.
Code: crates/cm-topology (model/classifier/heuristics), crates/cm-orchestrator
(runtime/harness/workflow/judge), docs/topology-platform.md (architecture).