What is semantic-runtime AGENTS.md?

A set of AGENTS.md project instructions for Semantic Runtime, an open-source layer that helps AI agents understand context, use evidence, and execute actions safely. It documents the project's purpose, Python setup, code layout, tests, linting, and current design contract.

It is for guiding work on the Semantic Runtime codebase, including installing dependencies, locating source and tests, following documentation rules, and running verification.

It gives coding agents the repository rules they need to make changes that fit the project and can be checked consistently.

How Chloride233/semantic-runtime configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to Chloride233/semantic-runtime. 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/Chloride233/semantic-runtime/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/Chloride233/semantic-runtime

Made for: Codex, OpenCode.

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/instructions/chloride233/semantic-runtime/agents-md/github.svg)](https://agentmods.dev/instructions/chloride233/semantic-runtime/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/chloride233/semantic-runtime/agents-md"><img src="https://agentmods.dev/badge/instructions/chloride233/semantic-runtime/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/chloride233/semantic-runtime/agents-md"><img src="https://agentmods.dev/badge/instructions/chloride233/semantic-runtime/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 508 This file is loaded in full into every session.

When invoked 508 The same file — it is already loaded in full.

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	$0.00508	$0.00508
Opus 5.5	$0.00203	$0.00203
Sonnet 5.5	$0.00102	$0.00102
Haiku 4.5	$0.00051	$0.00051

Measured 2mo ago against content hash 8e18bef01c68, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

semantic-runtime 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 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.

AGENTS.md · 46 lines

How it starts

The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Semantic Runtime project rules

Purpose

Semantic Runtime is an open-source semantic infrastructure layer for AI Agents: it provides semantic understanding, context resolution, evidence, and safe execution between models and tools. It does not replace LLMs, agent frameworks, databases, or MCP.

Run and verify

Install development dependencies: python -m pip install -e '.[dev]'.
Run tests: python -m pytest -q.
Run lint: python -m ruff check src tests.
uv-managed alternative: uv sync --extra dev then uv run pytest -q.

Stack and layout

Python 3.12, src/ layout; runtime code lives in src/semantic_runtime/.
Design specifications live in docs/ and are the source of truth; superseded v0.1 drafts are archived in docs/archive/.
Semantic Runtime.md at the repository root is the Obsidian index (MOC); wikilinks resolve by filename, so notes moved into docs/ stay intact.
Unit tests live in tests/unit/; integration tests belong in tests/integration/.

Current contract

Core Phases 1-5 are shipped: data models (Entity / Relation / Metric / Evidence / Policy), YAML model loader, registry, graph engine, deterministic context resolver, metric dependency resolution, policy-based operation validation, SQL guardrails, model integrity validation, MCP server (python -m semantic_runtime.mcp <model.yaml>, stdio and streamable HTTP), schema connectors (SQLite built-in; PostgreSQL/MySQL/Snowflake via optional extras), built-in domain packs (semantic_runtime.packs: ecommerce, saas, finance, game, healthcare), the SafetyProvider extension point, the v0.2 benchmark framework (benchmarks/runner.py, six question types, SRB score), and docker compose quick start.
Not yet shipped: JoinLint adapter, plugin system, third-party community packs, Snowflake-verified integration, and scripts tooling; do not claim them.
New runtime behavior must come from the design documents in docs/; behavior is not invented in code. Docs are updated when implementation clarifies or extends them (e.g. new error codes).
Keep README, rules, and docs aligned with implemented behavior.

Read the full file on GitHub · 46 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.

2mo ago First seen · 46 lines · 508 tokens per session scan A 8e18bef01c68

Subscribe to this mod's changes

semantic-runtime AGENTS.md is an instructions file published in the GitHub repository Chloride233/semantic-runtime (0 stars, last pushed 3mo ago), licensed MIT. It adds 508 tokens to every session, about $0.0020 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 2026-09-01.

Building agents LLM ai-agents infrastructure knowledge-graph mcp

semantic-runtime AGENTS.md next to 6 instructions from other repositories
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semantic-runtime AGENTS.mdChloride233/semantic-runtime	Instructions file	0	3mo ago	MIT	A	508	Codex, OpenCode
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semantic-runtime: Instructions file for Codex