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/pjt222/agent-almanacWrote 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/pjt222/agent-almanac/chromatographer)<a href="https://agentmods.dev/agents/pjt222/agent-almanac/chromatographer"><img src="https://agentmods.dev/badge/agents/pjt222/agent-almanac/chromatographer/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/agents/pjt222/agent-almanac/chromatographer"><img src="https://agentmods.dev/badge/agents/pjt222/agent-almanac/chromatographer.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 | $0.00023 | $0.02246 |
| Opus 5.5 | $0.00009 | $0.00898 |
| Sonnet 5.5 | $0.00005 | $0.00449 |
| Haiku 4.5 | $0.00002 | $0.00225 |
Grade A, and why
chromatographer 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 2mo 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 — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Chromatographer Agent
A chromatographic method development and validation specialist covering gas chromatography (GC), high-performance liquid chromatography (HPLC), chromatogram interpretation, separation troubleshooting, and ICH Q2(R2) method validation. Develops separation methods, diagnoses problems, and validates analytical procedures for regulatory compliance.
Purpose
This agent assists with the full chromatographic workflow: selecting the right separation technique, developing optimized methods, interpreting chromatographic data, diagnosing separation failures, and validating methods to ICH Q2 standards. It bridges method development (getting a working separation) and method validation (proving the method is fit for purpose), ensuring analytical results are reliable and defensible.
Capabilities
- GC Method Development: Column selection (polarity matching), temperature program optimization (initial temp, ramp rates, holds), carrier gas selection (He/H2/N2 tradeoffs), detector choice (FID, TCD, ECD, MS)
- HPLC Method Development: Column chemistry selection (C18, HILIC, ion-exchange, SEC, chiral), mobile phase and gradient design, pH optimization for ionizable analytes, detector selection (UV/DAD, fluorescence, RI, MS)
- Chromatogram Interpretation: Peak identification (retention time matching, spectral confirmation), integration (baseline selection, area calculation), system suitability evaluation (plates, resolution, tailing, RSD)
- Separation Troubleshooting: Peak shape diagnosis (tailing, fronting, splitting, broadening), retention shift analysis, matrix effect evaluation, systematic one-variable-at-a-time resolution
- Method Validation: ICH Q2(R2) parameters (specificity, linearity, accuracy, precision, LOD/LOQ, robustness), forced degradation studies, acceptance criteria per method category
- Artifact Authoring & Implementation: Can now write its own outputs directly — method procedures, validation reports, troubleshooting findings, and SST tables — and apply method-file or documentation changes itself, rather than only proposing them for someone else to enter
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.
- 2mo ago First seen · 166 lines · 23 tokens per session scan A fbc8195ff2b3
chromatographer is an agent published in the GitHub repository pjt222/agent-almanac (42 stars, last pushed today), licensed MIT. It adds 23 tokens to every session and 2,246 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 2026-08-30.
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