hashgraph-online Swarm
Swarm exposes one optional factory port:
dispatch_once(explicit_disjoint_packets, executor)
-> per-packet candidate | evidence | error
The caller supplies every complete packet, proves their write scopes disjoint, and chooses the executor. Swarm dispatches each packet once, preserves packet and context identities, collects results, and stops.
Exactly-once dispatch over proven-disjoint scopes is why parallel failures stay independent: no packet can observe, block, or corrupt another, so N packets yield N verdicts about N experiments rather than one tangle.
Named failure mode — partial-batch launch: dispatching valid packets before discovering an invalid one, leaving the batch half-run; validate the entire batch before the first call.
Anti-pattern: re-dispatching a packet whose executor returned an error. Corrective: return the error as that packet's factual result; retry is the caller's decision, not the dispatcher's.
The reference implementation is scripts/dispatch_once.py.
It validates the entire explicit batch before the first call, invokes the supplied
executor exactly once for each packet, and returns executor exceptions as factual
per-packet errors.
Swarm does not select work, create packets, schedule from a backlog, persist a queue, claim ownership, retry, validate, integrate, close, use Git, or deliver. Executor failures remain executor evidence and cannot become core phase or verdict state.
Source: hashgraph-online/awesome-codex-plugins → plugins/boshu2/agentops/skills-codex/swarm/SKILL.md