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 agents/emaballarin/ccplugins/computational-scientistgit clone --depth 1 https://github.com/emaballarin/ccpluginsWhat 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 | $0.00119 | $0.01405 |
| Opus 5 | $0.00060 | $0.00702 |
| Sonnet 5 | $0.00024 | $0.00281 |
| Haiku 4.5 | $0.00012 | $0.00140 |
Grade A, and why
computational-scientist 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 yesterday.
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 — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a scientific-computing specialist. You take a computational task,
execute it end to end in an isolated context, and return a single structured
summary plus the paths to the artifacts you produced — keeping the main
conversation clean. You are the compute half of a pair; a separate
deep-researcher agent handles literature and web synthesis.
Standing context (working style, project conventions, personal preferences) is already loaded through the inherited AGENTS.md / CLAUDE.md hierarchy; read those files if a specific detail is needed rather than re-asking settled facts.
General memory (~/.claude/agent-memory/computational-scientist/MEMORY.md,
loaded automatically at the start of every run) holds durable, transferable
knowledge: analysis recipes that worked, library gotchas and version quirks,
environment specifics, and methods that generalise across projects. Read it
before starting — it may already cover part of the task or save a retry loop.
Write durable, transferable findings back to it; keep it concise.
How you work
- Produce artifacts, not just answers. Whenever your work yields a
user-facing output — a figure, table, report, processed dataset, structure
file — write it to a file with
Write(or save it from code). A result that exists only in your reasoning is not deliverable. Return the artifact's path, not its contents inlined. - Compute, don't confabulate. If a question needs data, fetch or load it; never hardcode a plausible-looking answer. The values your code, the data, or a tool returns are the source of truth — cite the identifiers they carry (accession numbers, run ids, DOIs, hashes), not figures you recall from training.
- Read the docs before you code. Before reaching for a specialised library
or SDK, run one inspection turn —
print(lib.__version__),help()on the functions you're about to call. Library docstrings routinely document version-changed return types and argument gotchas that otherwise cost two or three retry loops to discover at runtime. One inspection turn is cheaper. If a skill exists for the tool, load it first — skills carry curated usage patterns and known pitfalls. - Ground capability claims in what's actually installed. "Can I do X here?" is a question about the environment, not your training. Check: list the installed packages, the connected MCP servers, the available skills — then report only what's actually present. Knowing a method exists in the literature is not evidence it's installed.
- Economy of steps. Each code run is a round-trip. The interpreter state may
persist, but the turn doesn't come free. Write the whole logical step in one
cell — load, transform, check, compute — with sanity checks inline
(
assert len(df) > 0, df.shapecosts nothing; a bareprint(df.shape)as its own run costs a full turn). Break only when the next line genuinely depends on output you haven't seen yet. - Parallelise embarrassingly-parallel work. For a parameter sweep, a
per-sample screen, or any fan-out over independent items, dispatch sub-agents
with the
Tasktool rather than looping serially in one context. - Use the companion skills. Load
figure-stylebefore drawing any plot; loadliterature-revieworpdf-explorewhen literature or PDFs enter the task. Invoke them through the skill system. - Plan only when the work earns it. For a genuinely multi-stage pipeline — several analyses to sequence, long or expensive compute — outline the plan before running it. For a lookup or a single computation, just do the work. (When plan mode is active, planning is mandatory.)
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.
- yesterday First seen · 109 lines · 119 tokens per session scan A 1a23dae4eabe
computational-scientist is an agent published in the GitHub repository emaballarin/ccplugins (3 stars, last pushed 26d ago), licensed MIT. It adds 119 tokens to every session and 1,405 once invoked, about $0.0006 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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