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/firstintent/a2a-bridge/claude-mdgit clone --depth 1 https://github.com/firstintent/a2a-bridgeWhat 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 | $0.01740 | $0.01740 |
| Opus 5 | $0.00870 | $0.00870 |
| Sonnet 5 | $0.00348 | $0.00348 |
| Haiku 4.5 | $0.00174 | $0.00174 |
Grade A, and why
a2a-bridge CLAUDE.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 — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md — a2a-bridge
Project
a2a-bridge is a bidirectional bridge between Claude Code and other AI coding agents (Codex, OpenClaw, Hermes, ...) built on the Claude Code Channels protocol. Modelled after raysonmeng/agent-bridge but designed from day one for:
- Pluggable peer adapters (one adapter per target agent)
- Multi-machine deployment (daemon on one host, CC on another)
- Multi-room / concurrent CC sessions
Language policy — strict
Everything stored in this git repo MUST be in English:
- Source code, including variable names and string literals
- All code comments
- Commit messages (subject and body)
- Pull request titles and descriptions
- Issue titles and bodies
- File and directory names
- README, ARCHITECTURE, ROADMAP, and any other top-level docs
English-language documentation targeted at readers of the repo lives under docs/ and is committed (cookbook, runbooks, subsystem guides). Chinese-language scratchpads — local design notes, meeting memos, translation drafts — live under docs-cn/, which is git-ignored (see .gitignore) and must never be committed.
Rationale: this is an open-source project targeting a global audience. Mixed-language repos fragment the reader base and confuse grep, so the committed tree stays English-only; docs-cn/ exists to keep the local workflow useful without polluting the repo.
Stack
- TypeScript, Bun runtime (matches upstream
agent-bridge) - MIT license
- Two-process topology: foreground MCP plugin + persistent daemon
- Peer adapters implement a common
IPeerAdapterinterface
Architecture constraints — enforced
The src/ tree is organized by runtime + domain, not by abstract
"layer number":
src/
shared/ zero-dep utilities (state-dir, daemon-lifecycle, config-service, logger)
messages/ shared value objects (BridgeMessage, ...)
transport/ plugin <-> daemon control plane
runtime-plugin/ code that runs inside the Claude Code MCP plugin
claude-channel/ MCP channel adapter
daemon-client/ client side of the control plane
bridge.ts plugin process entrypoint
runtime-daemon/ code that runs inside the persistent daemon
peers/ outbound peer adapters (codex, openclaw, hermes)
inbound/ A2A server exposing Claude Code to external clients
rooms/ RoomRouter
tasks/ Task lifecycle + storage
daemon.ts daemon process entrypoint
cli/ user-facing CLI; composition root for integration tests
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 · 167 lines · 1,740 tokens per session scan A af1239ec4093
a2a-bridge CLAUDE.md is an instructions file published in the GitHub repository firstintent/a2a-bridge (8 stars, last pushed 4mo ago), licensed MIT. It adds 1,740 tokens to every session, about $0.0087 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 2026-08-31.
Other instructions, from other repositories
pi-go CLAUDE.md
Instructions for dimetron/pi-go, covering claude.md — pi-go, work in a git worktree, not the primary checkout, where worktrees live, what pi-go's agent already does, and why it matters and commits: all commits must be signed.
peri CLAUDE.md
Instructions for KonghaYao/peri, covering claude.md — perihelion, 先读什么, 跨仓库契约, 任务路由 and 代码定位.
openinterpreter AGENTS.md
Instructions for openinterpreter/openinterpreter, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
FylloCode AGENTS.md
Instructions for Fioooooooo/FylloCode, covering agents.md, 项目概述, 技术栈, 目录结构 and 常用命令.
amp-acp AGENTS.md
Instructions for tao12345666333/amp-acp, covering agents.md, commands, architecture and code style.
IronMesh AGENTS.md
Instructions for WizTheAgent/IronMesh, covering agent guide for this repository, what ironmesh is, quick repo orientation, non-negotiable operating rules and workflow for changes.