Borrowing it
Nothing to install: this file belongs to SentientUI/mcp. 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/SentientUI/mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/SentientUI/mcpWrote 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/instructions/sentientui/mcp/agents-md)<a href="https://agentmods.dev/instructions/sentientui/mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sentientui/mcp/agents-md/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/instructions/sentientui/mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sentientui/mcp/agents-md.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 | $0.03111 | $0.03111 |
| Opus 5.5 | $0.01244 | $0.01244 |
| Sonnet 5.5 | $0.00622 | $0.00622 |
| Haiku 4.5 | $0.00311 | $0.00311 |
Grade A, and why
mcp AGENTS.md 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 14d 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 — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SentientUI — AI Agent Guide
SentientUI is a UI personalization platform that assigns visitors to variant components and reorders page sections per persona. The MCP gives agents read + limited write access to project data.
Key Concepts
Persona / Cluster — visitors are clustered by behavior into labeled groups. A reliability_score (0–1) measures confidence in the assignment. Low reliability means the engine won't personalize for that session even if a cluster is assigned.
Variant — a version of an adaptive component. There are two kinds, and the difference matters:
- Code-native variants are declared in the customer's code (
<Adaptive variants={{…}}>). They register automatically the first time the SDK requests an assignment after deploy, and they go live immediately — there is no draft step and nocreate_variantcall. Their content lives in the repo, not in SentientUI. - No-code / managed variants have no code; their content is stored on the SentientUI API (dashboard WYSIWYG,
<AdaptiveText>, orcreate_variant). These start as draft aftercreate_variant; no traffic is assigned until one is activated — withupdate_variant(status: active) or from the dashboard.update_variantstatus: drafttakes it back out of serving, anddelete_variant_draftremoves a draft entirely.
Only call create_variant for the no-code path. If the user is writing (or you are writing) the variant in code, do not call create_variant — deploying the code registers it.
Guardrail — automatic safety circuit that pauses a variant once its CVR is shown (anytime-valid bounds, checked every 5 minutes) to be more than the configured threshold below the best variant's. list_guardrail_events lists every variant a guardrail has paused that is still paused (days narrows it to recent pauses). resume_variant clears a pause — a guardrail pause or one from pause_variant — so check why the guardrail fired before resuming.
Shadow mode — project-level flag (toggled in dashboard settings). When ON: personalization is computed and logged but visitors receive the default layout/variant. Use it to validate the algorithm before committing to live 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.
- 14d ago Changed · +1 lines · +75 tokens per session 3016093132b2
- 20d ago Changed · +33 lines · +1,069 tokens per session d989f3117c9a
- 1mo ago Changed · +1 lines · +274 tokens per session 3cf460105921
- 1mo ago Changed · +3 lines · +90 tokens per session 915d54aa54f7
- 1mo ago First seen · 89 lines · 1,603 tokens per session scan A 8d646a30a3cd
mcp AGENTS.md is an instructions file published in the GitHub repository SentientUI/mcp (1 stars, last pushed 5d ago), licensed MIT. It adds 3,111 tokens to every session, about $0.0124 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.