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copilot: Instructions file for GitHub Copilot

.github/instructions/nav-pilot.instructions.md

copilot nav-pilot.instructions.md is an instructions file for GitHub Copilot from navikt/copilot. It costs 568 tokens per session, scanned A, original, MIT.

Repository and configuration rules for nav-pilot, including checks for unsafe links, untrusted repository settings, and restricted environment variables. They also cover how the tool handles OpenCode configuration files.

In plain words
What is it for?
Use them when developing or reviewing nav-pilot, especially its file handling, repository loading, OpenCode configuration, and security checks.
Why use it?
They reduce the risk that a repository or configuration file causes the agent to read, write, or run something outside the intended boundaries.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file. Also seen: mentions OpenCode.

This is navikt/copilot's own configuration. It tells GitHub Copilot how to work on copilot itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything copilot configures →

not rated 56repo +1 today A scan 568 tokens original MIT
View source ↗ navikt/copilot ki-utvikling.nav.no
Reuse

Borrowing it

Nothing to install: this file belongs to navikt/copilot. 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/navikt/copilot/main/.github/instructions/nav-pilot.instructions.md
Clone the repo
git clone --depth 1 https://github.com/navikt/copilot

Made for: GitHub Copilot.

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.

agentmods badge for copilot nav-pilot.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/navikt/copilot/nav-pilot/github.svg)](https://agentmods.dev/instructions/navikt/copilot/nav-pilot)
Your own site
<a href="https://agentmods.dev/instructions/navikt/copilot/nav-pilot"><img src="https://agentmods.dev/badge/instructions/navikt/copilot/nav-pilot/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.

agentmods 80×15 button for copilot nav-pilot.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/navikt/copilot/nav-pilot"><img src="https://agentmods.dev/badge/instructions/navikt/copilot/nav-pilot.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 568 This file is loaded in full into every session.
When invoked 568 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00568 $0.00568
Opus 5.5 $0.00227 $0.00227
Sonnet 5.5 $0.00114 $0.00114
Haiku 4.5 $0.00057 $0.00057

Measured 9d ago against content hash 25354da9ba94, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

copilot nav-pilot.instructions.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 9d 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.

.github/instructions/nav-pilot.instructions.md · 22 lines

How it starts

The opening of the file, as written. The whole thing — 22 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hostile repository and filesystem boundary

  • Symlink rejection: Reject symlinks when hashing, copying, staging, or exporting artifacts (source.DirHash, source.CopyDir, source.CopyFile, artifacts.ExportOpenCode, artifacts.SyncOpenCodeArtifacts). Always verify target paths with source.CheckSymlink before writing or deleting files in user or repository scopes.
  • Untrusted repository declarations: .nav-pilot/agentpakke.lock.json in a target repository is untrusted input. Reject absolute or local filesystem paths in decl.Source (loadRepoDeclaration and source.ComposeIfDeclared); only navikt/<repo> sources are permitted from repo declarations.
  • OpenCode config and MCP policy (internal/provider/opencode_mcp.go, staged_launch.go):
    • Never expand arbitrary host os.Environ() variables via {env:VAR} from opencode.json(c) into OPENCODE_CONFIG_CONTENT or NAV_PILOT_MCP_BLOCKED. Only expand variables permitted by isAllowedOpenCodeEnvVar.
    • Bound ancestor directory walks in openCodeConfigDocs to the git repository root or $HOME.
    • Validate {file:relPath} references in withOpenCode2UserConfig so resolved paths stay within the staged payload directory and pass source.CheckSymlink.
    • Reject local MCP server commands that use path separators, unsafe runner flags (-c, --eval, --with, --from, multiple -p), or environment overrides.
    • Ensure hooks-bridge.js and hooks-bridge-v2.js block unlisted MCP servers and reject list_mcp_resources / list_mcp_resource_templates calls that omit args.server when any server is blocked.

Testing and home directory isolation

  • Mandatory test isolation: Every test package in cli/nav-pilot must have a TestMain calling testhome.Run (TestEveryTestPackageCallsRun enforces this). Tests that invoke CLI commands or auth paths must use isolatedConfig(t) or isolatedRun(t) and keyring.MockInit() so the developer's real ~/.copilot/, ~/.nav-pilot/, $HOME, and macOS Keychain are never modified.
  • Concurrency and race safety: Avoid mutating package-level globals across goroutines (source.FetchTimeout, provider.MCPClient, provider.MCPHostsOff). Run go test -race ./... when modifying concurrent staging, launch, or background refresh paths.

Read the full file on GitHub · 22 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. 9d ago First seen · 22 lines · 568 tokens per session scan A 25354da9ba94

Subscribe to this mod's changes

copilot nav-pilot.instructions.md is an instructions file published in the GitHub repository navikt/copilot (56 stars, last pushed today), licensed MIT. It adds 568 tokens to every session, about $0.0023 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 2026-10-16.

CI and CDDevOps and cloudSecurityagentscopilotmcpskills
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