Borrowing it
Nothing to install: this file belongs to grizzly2005/bidirectional-bridge-claude-codex. 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/grizzly2005/bidirectional-bridge-claude-codex/main/.claude/skills/using-bridge/SKILL.mdgit clone --depth 1 https://github.com/grizzly2005/bidirectional-bridge-claude-codexWrote 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/skills/grizzly2005/bidirectional-bridge-claude-codex/using-bridge)<a href="https://agentmods.dev/skills/grizzly2005/bidirectional-bridge-claude-codex/using-bridge"><img src="https://agentmods.dev/badge/skills/grizzly2005/bidirectional-bridge-claude-codex/using-bridge.svg" alt="Measured on agentmods" 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 | $0.00081 | $0.02309 |
| Opus 5 | $0.00041 | $0.01154 |
| Sonnet 5 | $0.00016 | $0.00462 |
| Haiku 4.5 | $0.00008 | $0.00231 |
Grade A, and why
using-bridge 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 7d 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 — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Use the Bridge
Use the bridge as a coordination layer, not as a reason to involve another agent. Keep the current native client responsible for the user request; delegate only a bounded subtask whose expected value exceeds startup, context, and verification overhead.
Choose the path
- Delegate: assign one independent, verifiable subtask to the other runtime.
- Review: ask the other runtime for a bounded, usually read-only, independent review.
- Recover: resume one known stranded task in place after quota, timeout, crash, or process interruption.
- Observe: inspect telemetry or events only when the user requests them, during dogfooding, or for diagnosis.
- Do not use the bridge: complete trivial, tightly coupled, or cheaper single-agent work locally.
If this session is already a delegated worker with a supplied task_id, scope, expected deliverable, and verification criteria, complete that contract. Do not create a new root or delegate again unless the contract explicitly permits it.
Decide whether to delegate
Delegate only when all are true:
- The child task is independently understandable from a compact contract.
- Its write scope is disjoint, or it is read-only.
- Its output and verification criteria are explicit.
- The other runtime adds distinct implementation, diagnosis, review, or research value.
- The manager can consume and verify the result without prolonged back-and-forth.
Do not delegate:
- a trivial command, fact lookup, or tiny edit the manager can finish immediately;
- work requiring continuous conversation between agents;
- overlapping writes to the same files or module;
- ambiguous work missing authority, scope, or acceptance criteria;
- work with no meaningful verification;
- merely to collect telemetry or “use both models”;
- when the user forbids the bridge.
Treat an exact user-requested delegation count as a hard limit.
Delegation checkpoint for substantial work
For every substantial request, determine whether one bounded child task would improve implementation quality, security, diagnosis, verification, or independent review.
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 7d ago First seen · 186 lines · 81 tokens per session scan A 52e51c8b4c08
using-bridge is a skill published in the GitHub repository grizzly2005/bidirectional-bridge-claude-codex (1 stars, last pushed 25d ago), licensed MIT. It adds 81 tokens to every session and 2,309 once invoked, about $0.0004 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.
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