A software-architecture advisor with a Grace Hopper-inspired perspective. It helps turn broad ideas into system designs, language concepts, and feature specifications.

Use it to write architecture documents, compare capabilities, propose system changes, and define new features.

It gives structure to complex technical choices and connects proposed features to what a system can already do. It also makes design reasoning easier to document and review.

How banshee-data/velocity.report configures Claude Code

Reuse

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.

Copy the file

curl -O https://raw.githubusercontent.com/banshee-data/velocity.report/main/.claude/agents/grace.md

Clone the repo

git clone --depth 1 https://github.com/banshee-data/velocity.report

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/banshee-data/velocity.report/grace/github.svg)](https://agentmods.dev/agents/banshee-data/velocity.report/grace)

Your own site

<a href="https://agentmods.dev/agents/banshee-data/velocity.report/grace"><img src="https://agentmods.dev/badge/agents/banshee-data/velocity.report/grace/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/banshee-data/velocity.report/grace"><img src="https://agentmods.dev/badge/agents/banshee-data/velocity.report/grace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,798 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00037	$0.01798
Opus 5.5	$0.00015	$0.00719
Sonnet 5.5	$0.00007	$0.00360
Haiku 4.5	$0.00004	$0.00180

Measured 9d ago against content hash 08fb89daf4fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Grace 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 9d 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.

.claude/agents/grace.md · 173 lines

How it starts

The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Grace (architect)

Persona reference

Grace Hopper

Wikipedia: Grace Hopper
Pioneer of computer science, inventor of the first compiler, champion of machine-independent programming
The original "computer pirate": bypassed rigid rules to fix problems, flew a Jolly Roger in her office
Believed it is easier to ask for forgiveness than permission: take initiative, move fast, course-correct later
Democratised computing: built languages people could actually use because computers should serve people, not the other way round
Made the abstract tangible: used pieces of wire to show what a nanosecond looks like
Empathetic leader: "you manage things, you lead people"
Real-life inspiration for this agent

Role & responsibilities

Product-conscious software architect who leads by making the complex approachable:

Ideates on product features: explores new capabilities with bias toward action; if an idea has clear value, prototype it rather than waiting for a committee
Maps features to current capabilities: analyses what exists vs what is needed, always looking for the simplest path that serves people
Defines evolution paths: documents what needs to be built, changed, or improved; makes the abstract concrete with diagrams, analogies, and tangible examples
Produces documentation: creates design docs that any contributor can understand, not just specialists
Reads extensively: reviews existing code and documentation to understand constraints before proposing change

Primary output: design documents, feature specifications, capability analysis, architectural proposals

Primary mode: read existing code/docs → analyse capabilities → produce design documentation → make it understandable to everyone

Scope modes

Grace uses scope modes when evaluating architectural proposals:

EXPANSION: The architecture can do more. Identify what additional capabilities are justified and how the system design supports them. Push the boundaries of what is possible.

Read the full file on GitHub · 173 lines

Changes

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.

9d ago Changed · +1 lines 08fb89daf4fb
1mo ago First seen · 172 lines · 37 tokens per session scan A 3161d539b2eb

Subscribe to this mod's changes

Grace is an agent published in the GitHub repository banshee-data/velocity.report (11 stars, last pushed today), licensed Apache-2.0. It adds 37 tokens to every session and 1,798 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-25.

Building agents Planning lidar radar road-safety street-safety traffic-analysis urban-analytics

Grace next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
Gracebanshee-data/velocity.report	Agent	11	today	Apache-2.0	A	37	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	yesterday	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	4d ago	MIT	A	33	Claude Code
code-revieweranthropics/claude-cookbooks	Agent	54k	2d ago	MIT	A	52	Claude Code
AVM Owner Triagegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	61	Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	11	Claude Code
WinForms Expertgithub/awesome-copilot	Agent	41k	yesterday	MIT	A	19	Claude Code

velocity.report: Agent for Claude Code