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.

In plain words
What is it for?
It is for guiding work on the Semantic Runtime codebase, including installing dependencies, locating source and tests, following documentation rules, and running verification.
Why use it?
It gives coding agents the repository rules they need to make changes that fit the project and can be checked consistently.

Instructions file for CodexOpenCode

Install

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.

agentmods
npx agentmods add instructions/chloride233/semantic-runtime/agents-md
Clone the repo
git clone --depth 1 https://github.com/Chloride233/semantic-runtime

Made for: Codex, OpenCode.

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. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00508 $0.00508
Opus 5 $0.00254 $0.00254
Sonnet 5 $0.00102 $0.00102
Haiku 4.5 $0.00051 $0.00051

Measured yesterday against content hash 8e18bef01c68, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

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.

  1. yesterday 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 1mo ago), licensed MIT. It adds 508 tokens to every session, about $0.0025 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 2026-09-01.

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