Borrowing it
Nothing to install: this file belongs to LBurny/symkit-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/LBurny/symkit-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/LBurny/symkit-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/lburny/symkit-mcp/agents-md)<a href="https://agentmods.dev/instructions/lburny/symkit-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/lburny/symkit-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/lburny/symkit-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/lburny/symkit-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 | $0.02631 | $0.02631 |
| Opus 5.5 | $0.01052 | $0.01052 |
| Sonnet 5.5 | $0.00526 | $0.00526 |
| Haiku 4.5 | $0.00263 | $0.00263 |
Grade A, and why
symkit-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 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.
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 — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Workspace instructions for ZCode agents working in symkit-mcp-master.
Repository Purpose
SymKit MCP (symkit-mcp) — a FastMCP server exposing 47 MCP tools for symbolic formula derivation over SymPy. Domain-agnostic: physics, engineering, chemistry, biology, economics. The server runs over MCP stdio; AI agents (Claude, etc.) are the clients.
Entry point: src/symkit_mcp/server.py → symkit-mcp console script. The single math() tool covers 32 symbolic operations; session_* tools manage step-by-step derivations with full provenance persisted to derivation_sessions/.
Major Directories
src/symkit/— Core domain library (DDD-layered, no MCP dependency)domain/— Pure business logic, entities, value objects, services. Must not import external/infra modules.application/— Use cases coordinating Domain ↔ Infrastructure.infrastructure/— SymPy engine, file persistence, external adapters (Wikidata, SciPy, BioModels).resources/— Static resources.
src/symkit_mcp/— MCP presentation layerserver.py— FastMCP entry; eagerly initializesSessionManagerin a worker thread on startup (see Gotchas).tools/— Tool implementations grouped by concern:math.py,session.py,formula.py,codegen.py,symbols.py,assumptions.py,orchestration.py. All register viaregister_all_tools(mcp)in__init__.py.tools/_state.py— Process-global shared state: single_current_sessionand_current_context. All tool modules read/write throughget_session()/set_session()/get_context()/set_context().
formulas/— YAML formula library (library/<category>/*.yaml) andderived/outputs (gitignored).derivation_sessions/— Persisted session JSON (gitignored runtime artifacts).tests/— pytest suite grouped by concern into subdirectories:domain/(pure domain units: entities, parser, derivation goal/planner, step verifier),application/(public library use cases),infrastructure/(SymPy engine, verifier, external adapters),math/(unifiedmath()tool surface),assumptions/(assumption contracts + invariants),derivation/(end-to-end derivation examples),sessions/(session/step tools + verification),formulas/(library, catalog, FTS5 index, pruning),regression/(black-box-driven fix suites),tools/(codegen, orchestration),e2e/(stdio MCP smoke tests spawning the real server via the MCP client SDK). Shared fixtures live in the rootconftest.py, which also insertssrc/intosys.path— test modules must not add their own path bootstrap.scripts/— Repo tooling:check_modularity.py(bylaw §5.1 ratchet),prune_staging.py(formula staging quarantine).modularity-baseline.json— Frozen sizes of existing oversized files/functions (bylaw §5.1.1). Update only viacheck_modularity.py --update.docs/— Design docs (symkit-design.md,composable-formula-modification-engine.md, etc.)..github/bylaws/— Binding sub-laws:ddd-architecture.md,git-workflow.md,python-environment.md.
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 · +1 lines · +99 tokens per session c8e972916ad7
- 1mo ago Changed · +1 lines · +121 tokens per session 4e0899346432
- 1mo ago Changed 8d8e5bf2168c
- 1mo ago Changed · +5 lines · +429 tokens per session cd28cc81999b
- 1mo ago Changed · +1 lines · +254 tokens per session 5776e81dd4a5
- 2mo ago First seen · 80 lines · 1,728 tokens per session scan A cc0c3855bcd9
symkit-mcp AGENTS.md is an instructions file published in the GitHub repository LBurny/symkit-mcp (13 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 2,631 tokens to every session, about $0.0105 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
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next.js AGENTS.md
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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.
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Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
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