Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/assemblyai/blurt/checknpx skills add AssemblyAI/blurt --skill checkgit clone --depth 1 https://github.com/AssemblyAI/blurtWhat 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 | $0.00164 | $0.01876 |
| Opus 5 | $0.00082 | $0.00938 |
| Sonnet 5 | $0.00033 | $0.00375 |
| Haiku 4.5 | $0.00016 | $0.00188 |
Grade A, and why
check 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 2d 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 — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.
check — is this green?
scripts/check.sh is the single source of truth for "is this green?" It is
exactly what CI (.github/workflows/check.yml, macos-26) runs, so a clean
local check.sh matches CI by construction.
Before you run: the macOS-only guard
Blurt is macOS-only (platforms: [.macOS(.v15)], AppKit + AVFoundation). The
engine imports AVFoundation, so even the SPM package won't compile off-Mac.
If swift/xcodebuild/xcodegen are unavailable (Linux or web sandbox):
do not run the full check.sh (it fails fast anyway), and never claim a
build/test passed. Say plainly: "Verification must happen on a Mac — CI runs the
full check.sh on macos-26 and is the authority on green." You may still
read/edit Swift, reason about the pipeline, and write tests for later
verification — just don't assert they pass.
What you CAN run there is the portable subset:
scripts/check.sh --portable
It runs the repo-integrity guards — dependencies, sound catalog, site, shell
portability, and settled decisions — then actionlint, zizmor, prettier, xmllint,
markdownlint, shellcheck, shfmt, ruff (lint + format check), pytest over
evals/, and release.test.sh. swift-format lint and swiftlint lint join
them when Linux builds are on PATH; under the default web network policy they
are not.
That fully verifies docs, site, scripts, eval, and workflow changes. It is
not "green" in the CI sense: the entire Swift side is skipped, and the
closing line says so. For Swift changes, push and watch check.yml instead —
its compile job reports a broken test build in ~2 minutes, and format-patch
publishes the exact swift-format reflow as an artifact so you don't have to
reproduce it by hand. In Claude Code on the web, the SessionStart hook
installs the portable linters automatically.
Quick preflight:
command -v swift xcodebuild xcodegen >/dev/null 2>&1 \
&& echo "macOS toolchain present — safe to run check.sh" \
|| echo "NO toolchain — only check.sh --portable works; Swift verification happens on a Mac/CI"
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.
- 2d ago First seen · 129 lines · 164 tokens per session scan A 16ca1507a565
check is a skill published in the GitHub repository AssemblyAI/blurt (5 stars, last pushed 4d ago), licensed MIT. It adds 164 tokens to every session and 1,876 once invoked, about $0.0008 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 2026-08-31.
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