Borrowing it
Nothing to install: this file belongs to AtomGraph/Web-Algebra. 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/AtomGraph/Web-Algebra/main/AGENTS.mdgit clone --depth 1 https://github.com/AtomGraph/Web-AlgebraWrote 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/atomgraph/web-algebra/agents-md)<a href="https://agentmods.dev/instructions/atomgraph/web-algebra/agents-md"><img src="https://agentmods.dev/badge/instructions/atomgraph/web-algebra/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/atomgraph/web-algebra/agents-md"><img src="https://agentmods.dev/badge/instructions/atomgraph/web-algebra/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 | $0.02042 | $0.02042 |
| Opus 5.5 | $0.00817 | $0.00817 |
| Sonnet 5.5 | $0.00408 | $0.00408 |
| Haiku 4.5 | $0.00204 | $0.00204 |
Grade A, and why
Web-Algebra 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 8d 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 — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance for coding agents (and people) working on this repository.
What this is
Web Algebra is a composable algebra of RDF operations — loading, querying,
transforming and writing Linked Data — written as a JSON DSL. A plan is a tree
of operations that a model can generate from a natural-language instruction
and the interpreter evaluates. It runs as a CLI (web-algebra) and as an MCP
server (web-algebra-mcp, stdio; web_algebra.server:app, streamable HTTP).
formal-semantics.md is the normative specification: its evaluation model is
XPath/XSLT's, applied to RDF (flat sequences, the empty sequence as Unit, a
focus of Current/Position/Last, typed errors), and §4 is the operation
catalogue. Appendix A covers the LinkedDataHub (ldh-) operations.
Commands
uv sync --group dev # install, with pytest and ruff
uv run ruff check # lint, as CI runs it
uv run pytest # the offline suite, as CI runs it
uv run pytest -m ldh # against a LinkedDataHub (see below)
uv run web-algebra --from-json examples/city-profiles/plan.json
uv run web-algebra-mcp # MCP server, stdio
uv run uvicorn web_algebra.server:app --reload # MCP server, streamable HTTP
CI runs ruff check and pytest on Python 3.10 to 3.14, from the locked
environment (uv sync --locked: change pyproject.toml, then uv lock).
A v* tag publishes to PyPI and makes a GitHub Release from the version's
section of CHANGELOG.md (.github/workflows/release.yml). It cannot be
undone, so never push a tag without being asked. A release bumps the version
in pyproject.toml and server.json (the MCP Registry entry) together;
tests/test_packaging.py checks they agree.
Certificates and secrets
The CLI, the MCP server and the tests read the LinkedDataHub client
certificate from CERT_PEM_PATH and its password from CERT_PASSWORD
(the CLI's --cert_pem_path / --cert_password override them). Read the
password from a file rather than typing it:
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.
- 8d ago Changed · +7 lines · +150 tokens per session a85c1350f20a
- 9d ago First seen · 153 lines · 1,892 tokens per session scan A 51a08d240d27
Web-Algebra AGENTS.md is an instructions file published in the GitHub repository AtomGraph/Web-Algebra (46 stars, last pushed today), licensed Apache-2.0. It adds 2,042 tokens to every session, about $0.0082 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 2026-10-21.
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