Borrowing it
Nothing to install: this file belongs to repoprompt/repoprompt-ce. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/repoprompt/repoprompt-ce/main/.agents/skills/rpce-swift-concurrency-fix/SKILL.mdgit clone --depth 1 https://github.com/repoprompt/repoprompt-ceWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/repoprompt/repoprompt-ce/rpce-swift-concurrency-fix)<a href="https://agentmods.dev/skills/repoprompt/repoprompt-ce/rpce-swift-concurrency-fix"><img src="https://agentmods.dev/badge/skills/repoprompt/repoprompt-ce/rpce-swift-concurrency-fix/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/repoprompt/repoprompt-ce/rpce-swift-concurrency-fix"><img src="https://agentmods.dev/badge/skills/repoprompt/repoprompt-ce/rpce-swift-concurrency-fix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00093 | $0.01015 |
| Opus 5 | $0.00046 | $0.00508 |
| Sonnet 5 | $0.00019 | $0.00203 |
| Haiku 4.5 | $0.00009 | $0.00102 |
Grade A, and why
rpce-swift-concurrency-fix scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.
RepoPrompt CE Concurrency Fix
Resolve the requested diagnostics with the smallest semantic change that makes the runtime ownership explicit. Do not treat an annotation-only compile as proof of safety.
Required context
- Read
references/diagnostic-playbook.md, classify the boundary, then load the matching detailed reference below. Load another only if the traced boundary spans families:references/isolation-sendability-samples.mdfor actor isolation, Sendable crossings, global state, isolated conformances, reentrancy, or escape-hatch repairs;references/tasks-cancellation-continuations-samples.mdfor task ownership, detached work, continuation races, streams, or deterministic concurrency tests;references/synchronization-interop-samples.mdfor locks, queues,@unchecked Sendable, Objective-C/C callbacks, runtime assertions, or@preconcurrency.
- Read
references/repository-patterns.mdbefore changing an existing RepoPrompt task, continuation, synchronization, UI-publication, or concurrency-utility pattern. - For Swift 6.2 settings or execution semantics, read
../rpce-swift-6-concurrency-migration/references/official-swift-6-2.mdand its linked local samples. - Inspect the owning target's actual manifest settings before interpreting a diagnostic.
- Before running builds or tests, read root
AGENTS.mdand the applicable section of../rpce-swift-6-concurrency-migration/references/validation-matrix.md.
Workflow
1. Capture the failure
Record:
- exact diagnostic text;
- package, target, file, and declaration;
- compiler and Swift language mode;
- strict checking, default isolation, and upcoming-feature settings;
- whether the issue is first-party, imported, generated, or dependency code.
2. Trace the boundary
Follow the value, closure, or mutable state through its real execution path. Identify:
- source and destination isolation domains;
- owning actor, task, lock, queue, or immutable value;
- suspension and reentrancy points;
- task lifetime and cancellation owner;
- callback/continuation completion paths;
- public API or interoperability constraints.
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 92 lines · 93 tokens per session scan A 5c8b4c2d1278
rpce-swift-concurrency-fix is a skill published in the GitHub repository repoprompt/repoprompt-ce (928 stars, last pushed today), licensed Apache-2.0. It adds 93 tokens to every session and 1,015 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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