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.
npx agentmods add instructions/vinilana/dotcontext/agents-mdgit clone --depth 1 https://github.com/vinilana/dotcontextWhat 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 | $0.00555 | $0.00555 |
| Opus 5 | $0.00278 | $0.00278 |
| Sonnet 5 | $0.00111 | $0.00111 |
| Haiku 4.5 | $0.00056 | $0.00056 |
Grade A, and why
dotcontext 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 2d 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 — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Dotcontext Agent Instructions
This repository exposes one runtime through four surfaces:
cli -> harness <- mcp
<- integrations (host hooks / extensions)
Agents working in this repo should preserve that separation.
Architectural Intent
cliis the operator interfaceharnessis the reusable execution runtimemcpis the transport adapter for AI toolsintegrationsis the host hook and extension layer (Claude Code, Codex CLI, Pi)
If a change affects reusable execution logic, prefer src/harness/application.
If a change affects reusable domain rules, prefer src/harness/domain.
If a change affects protocol shape or request handling, prefer src/mcp/gateway.
If a change affects user-facing commands or installation flows, prefer src/cli.
If a change affects host event mapping or hook templates, prefer src/integrations.
Do not add new code under src/services; that directory is not part of the target architecture.
Repository References
README.mdexplains what dotcontext is and why it exists- dotcontext.dev (source in
docs/) explains how to use it ARCHITECTURE.mdexplains how the harness worksCONTRIBUTING.mdexplains contributor workflowCHANGELOG.mdtracks release-facing changes
Expected Validation
For code changes:
npm run build
npm test -- --runInBand
For packaging or release-surface changes:
npm run build:packages
npm run smoke:packages
MCP Install Changes
If you touch mcp:install, keep these aligned:
src/cli/services/mcpInstallService.tssrc/cli/services/mcpInstallService.test.tsREADME.mddocs/src/content/docs/(published at dotcontext.dev)CHANGELOG.md
Documentation must reflect the actual config written by the installer.
Hook Install Changes
If you touch hook install, keep these aligned:
src/cli/services/hookInstallService.tssrc/cli/services/hookDispatchService.tssrc/cli/services/__tests__/hookInstallService.test.tssrc/integrations/claude-code/,src/integrations/codex/,src/integrations/pi-dev/README.mddocs/src/content/docs/(installation and hooks guides)CHANGELOG.md
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.
- 2d ago First seen · 75 lines · 555 tokens per session scan A 49bc426d9ba4
dotcontext AGENTS.md is an instructions file published in the GitHub repository vinilana/dotcontext (561 stars, last pushed 1mo ago), licensed MIT. It adds 555 tokens to every session, about $0.0028 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 2026-08-30.
Other instructions, from other repositories
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.