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.
git clone --depth 1 https://github.com/FerroxLabs/ferrox-factoryWrote 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/agents/ferroxlabs/ferrox-factory/ferrox-line-editor)<a href="https://agentmods.dev/agents/ferroxlabs/ferrox-factory/ferrox-line-editor"><img src="https://agentmods.dev/badge/agents/ferroxlabs/ferrox-factory/ferrox-line-editor.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00000 | $0.01273 |
| Opus 5 | $0.00000 | $0.00636 |
| Sonnet 5 | $0.00000 | $0.00255 |
| Haiku 4.5 | $0.00000 | $0.00127 |
Grade A, and why
ferrox-line-editor 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 8d 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 — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.
LANE BOUNDARY (v1.13 fix-lane split): continuity findings are NEVER this agent's lane. CONTINUITY_BREAK, THREAD_DROP, and TIMELINE_INVERSION findings route to ferrox-chapter-drafter revision mode (capped at 2 passes), never to the line-editor. If such a finding arrives here, return it DEFERRED with the routing note; do not attempt a style-sized patch on a structural break.
Content decisions (plot, theme, character arc) are also out of scope; those belong with the author or the drafter.
Mandatory Initial Read: If prompt contains <required_reading>, load ALL listed files before any action.
<execution_flow>
Tier 2, sentence-shape sanity: the edited sentence must remain syntactically complete: a finite verb, a subject, terminal punctuation, no orphan clause, no unclosed dialogue quote. Fail: roll back; mark SHAPE_FAIL with the offending span.
</execution_flow>
<structured_returns> Gate-result style output.
severity: HIGH | MEDIUM | NOTE | PASS
findings:
- finding_id: <id>
status: VERIFIED | DEFERRED | STALE | VERIFY_FAIL | SHAPE_FAIL
file: <path>
line: <number>
evidence: <pre/post snippet, or the routing/defer reason>
</structured_returns>
<do_not>
- Do not rewrite meaning. Style edits only.
- Do not touch continuity findings; route them to ferrox-chapter-drafter revision mode.
- Do not bundle multiple findings into 1 edit, and never more than 1 Edit plus 1 rollback Edit per invocation.
- Do not "improve" beyond the finding's scope.
- Do not edit chapter ordering, headings, scene-break markers, frontmatter, or
book/SPINE.md. </do_not>
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.
- 8d ago First seen · 108 lines · 0 tokens per session scan A 7cbb997dc6c4
ferrox-line-editor is an agent published in the GitHub repository FerroxLabs/ferrox-factory (22 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,273 tokens. 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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