Borrowing it
Nothing to install: this file belongs to banshee-data/velocity.report. 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/banshee-data/velocity.report/main/.claude/skills/devlog-update/SKILL.mdgit clone --depth 1 https://github.com/banshee-data/velocity.reportWrote 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/banshee-data/velocity.report/devlog-update)<a href="https://agentmods.dev/skills/banshee-data/velocity.report/devlog-update"><img src="https://agentmods.dev/badge/skills/banshee-data/velocity.report/devlog-update/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/banshee-data/velocity.report/devlog-update"><img src="https://agentmods.dev/badge/skills/banshee-data/velocity.report/devlog-update.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00021 | $0.02972 |
| Opus 5.5 | $0.00008 | $0.01189 |
| Sonnet 5.5 | $0.00004 | $0.00594 |
| Haiku 4.5 | $0.00002 | $0.00297 |
Grade C, and why
devlog-update scanned grade C with 1 finding 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 1mo 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
- Another bullet. References files in `backticks`, links to [design docs](plans/foo.md) (#513, #514). <!-- link-ignore --> How it starts
The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skill: devlog-update
Bring docs/DEVLOG.md up to date by reading git history across all branches and synthesising new entries in the established format.
Usage
/devlog-update
Format reference
The devlog uses one H2 header per UTC date:
## April 7, 2026 - Short Theme Title
- Concise bullet describing what changed and why (#512).
- Another bullet. References files in `backticks`, links to [design docs](plans/foo.md) (#513, #514). <!-- link-ignore -->
- {branch-name} Unlanded work on a feature branch.
The register rules (one line per bullet, one heading per day, PR numbers) are canonical in .github/STYLE.md under "Logs and registers"; this skill applies them.
Conventions
- Date format:
Month DD, YYYY(e.g.April 7, 2026). - Separator:
-(hyphen) between date and theme. Never use em-dashes in headers. - Branch metadata: unlanded bullets begin with
{branch-name}(the branch slug in curly braces, immediately after-). No italic_Branch:_headers. This is the only format for denoting branch work. - Bullet style: each bullet is exactly one physical line starting
-. Never hard-wrap a bullet, however long: no indented continuation lines. Concise, action-focused, past tense. - Content per bullet: what changed, which files/packages/layers, why, and references to design docs or PRs where relevant.
- Ordering: newest entry first (prepend to the file, after its introduction and formatting note).
- One heading per date: exactly one
##heading per UTC calendar day that has work. No date ranges (February 9-10) and no second heading for a day that already has one: append to that entry and broaden its theme title instead. Merge related commits into themed bullets rather than listing every commit individually. - PR references: every main-landed bullet ends with the number(s) of the PR(s) that delivered it, before the final full stop:
(#622)or(#605, #606). No "Merged as" or "merged to main" phrasing. Add file count only when notable. Work pushed straight to main without a PR has no number. - Links: link to plan docs only when the entry is primarily about creating or updating that plan. Do not link every file mentioned.
- Version bumps: include only for actual releases. Omit pre-release bump bullets.
- Tone: factual, developer-journal style. No marketing language. Record decisions and rationale when non-obvious.
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.
- 1mo ago Changed · +10 lines 1ac776dc12d3
- 1mo ago First seen · 209 lines · 21 tokens per session scan C 11bfc1bf439c
devlog-update is a skill published in the GitHub repository banshee-data/velocity.report (11 stars, last pushed today), licensed Apache-2.0. It adds 21 tokens to every session and 2,972 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-25.
devlog-update compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| devlog-updatebanshee-data/velocity.report | Skill | 11 | today | Apache-2.0 | C | 21 | Claude Code |
| merge-batchdiegosouzapw/OmniRoute | Skill | 83k | 5d ago | MIT | A | 46 | Claude Code |
| prowler-commitprowler-cloud/prowler | Skill | 15k | yesterday | Apache-2.0 | A | 44 | Claude Code, Codex |
| gh-auth-isolationgithub/gh-aw | Skill | 5.6k | yesterday | MIT | A | 20 | Claude Code, Codex |
| github-skillzeenie-ai/OpenCompany | Skill | 1.1k | yesterday | MIT | A | 51 | Claude Code |
| comet-githubrpamis/comet | Skill | 3.3k | yesterday | MIT | A | 72 | Claude Code, Codex |
| release-helperSahir619/fable-method | Skill | 2.3k | 1mo ago | MIT | A | 43 | Claude Code |