Borrowing it
Nothing to install: this file belongs to tphakala/agy-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/tphakala/agy-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/tphakala/agy-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/tphakala/agy-mcp/agents-md)<a href="https://agentmods.dev/instructions/tphakala/agy-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/tphakala/agy-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/tphakala/agy-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/tphakala/agy-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 | $0.01485 | $0.01485 |
| Opus 5.5 | $0.00594 | $0.00594 |
| Sonnet 5.5 | $0.00297 | $0.00297 |
| Haiku 4.5 | $0.00148 | $0.00148 |
Grade A, and why
agy-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 — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance for coding agents working in this repository. The README is the user-facing contract; this file covers how the code is organised and the conventions a change is expected to follow.
What this is
agy-mcp is a Go MCP server that wraps the Antigravity CLI (agy). Each tool call that runs a prompt
becomes a disk-backed job: the server spawns a detached supervisor (agy-mcp run-job <jobDir>), which
runs agy -p --output-format stream-json and mirrors its output into the job directory. Status is
derived from those files, so a job survives a server restart.
Module path: github.com/tphakala/agy-mcp/v2. Go version: see go.mod.
Layout
| Path | Role |
|---|---|
main.go |
Entry point. Subcommands run-job (internal/supervisor), and wait-job, hook-wait, doctor (the root package's waitcmd.go, hookwait.go, doctor.go); otherwise serves MCP over stdio or HTTP. |
internal/mcptools |
MCP tools. Tool descriptions are the Description: strings (plus serverInstructions); field descriptions are the jsonschema struct tags. Both live in tools.go, run_sync.go and wait.go. |
internal/manager |
Job lifecycle: request normalization, spawning, status derivation (status.go), cancel, models, agents, sessions. |
internal/supervisor |
The per-job process that runs agy and writes the job directory. |
internal/jobstore |
On-disk job state: meta.json, file-name constants, exit-code sentinels. |
internal/streamjson |
Decoder for agy's stream-json events. |
internal/proc |
Process-group and session primitives, per platform (proc_posix.go, proc_windows.go, and proc_other.go for unsupported platforms). |
internal/agyver |
agy version parsing and the minimum supported version (agyver.Required). |
internal/config |
Runtime configuration from the environment and defaults. |
internal/hookinput |
Reads the job id from a client hook payload for hook-wait. |
internal/testutil |
Test doubles: fake agy and fake supervisor scripts. |
rules/ |
ruleguard matchers used by golangci-lint (build tag ruleguard). |
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 First seen · 95 lines · 1,485 tokens per session scan A 1be2bebffd8b
agy-mcp AGENTS.md is an instructions file published in the GitHub repository tphakala/agy-mcp (22 stars, last pushed 3d ago), licensed MIT. It adds 1,485 tokens to every session, about $0.0059 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 2026-09-24.
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