tmb_recovery

tmb_recovery is a skill for Claude Code, Codex from trustmybot/plugin. It costs 66 tokens per session (1,494 once invoked), scanned A, original, MIT.

A recovery guide for an agent when a tool call fails, a service cannot be reached, or shared model data is unavailable.

In plain words
What is it for?
Use it when MCP tools return errors, the trajectory server is unreachable, or the world model is locked or unavailable.
Why use it?
It provides defined responses for stopping and reporting errors, using a read-only local fallback, retrying, or reconnecting the needed service.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the tmb plugin — 12 skills, 5 commands, 7 agents, 7 hooks, 1 MCP server shipped together

Install

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.

agentmods
npx agentmods add skills/trustmybot/plugin/tmb_recovery
Any agent
npx skills add trustmybot/plugin --skill tmb_recovery
Clone the repo
git clone --depth 1 https://github.com/trustmybot/plugin

Made for: Claude Code, Codex.

Or install tmb, the plugin that ships this one along with the rest of its 12 skills, 5 commands, 7 agents, 7 hooks, 1 MCP server.

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 tmb_recovery

README.md
[![agentmods](https://agentmods.dev/badge/skills/trustmybot/plugin/tmb_recovery.svg)](https://agentmods.dev/skills/trustmybot/plugin/tmb_recovery)
Your own site
<a href="https://agentmods.dev/skills/trustmybot/plugin/tmb_recovery"><img src="https://agentmods.dev/badge/skills/trustmybot/plugin/tmb_recovery.svg" alt="Measured on agentmods" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,494 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00066 $0.01494
Opus 5 $0.00033 $0.00747
Sonnet 5 $0.00013 $0.00299
Haiku 4.5 $0.00007 $0.00149

Measured 3d ago against content hash 9d6363295b04, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tmb_recovery 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 3d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/bro-sqlite-readonly.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/tmb_recovery/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Recovery — three failure modes, three responses

Bro keeps the user-visible flow moving on recoverable errors. Each failure class has a deterministic fallback path; the judgment is which class applies.

The bundled script ${CLAUDE_PLUGIN_ROOT}/skills/tmb_recovery/scripts/bro-sqlite-readonly.sh is for §B (trajectory-server unreachable). Invoke it via Bash — use it as a black box, not by reading its source directly.

A. MCP tool returns is_error=true

When any MCP call result has is_error: true or content includes {"error": ...}, the call was wrong — not the doctrine.

Protocol

  1. Halt the current flow immediately. Treat the failed call as the chain's last.
  2. Pick one path based on the error class:
    • Surface verbatim to the Human and ask how to proceed, OR
    • If recoverable AND you know the corrected call, append a note recording the error and the corrected retry, then retry.

Error classification

Error shape Meaning Right response
forbidden Bro called a tool scoped to another role. Reconsider whether the action is bro's responsibility. Change the call signature before retrying.
validation Input didn't match the schema (e.g. malformed branch_id). Fix the input. Retry with the corrected payload.
Constraint failure DB integrity violation (foreign key, unique). Surface to Human; usually means a stale or duplicate write attempt.
no matching deferred tools The MCP child process is dead. Switch to degraded mode (§B).

B. Trajectory-server unreachable

Two distinct sub-cases — read the additionalContext warning from mcp-health-check.sh at session start to tell which one you have.

B.1 — MCP absent this session

The plugin's MCP server is missing from CC's resolved-plugin list — /reload-plugins and full quit + relaunch won't fix it because CC persists the cached config to disk.

During the failure, bro halts. State-writing tools are unreachable; halt to avoid corrupting the audit trail. Read-only sqlite3 fallback (${CLAUDE_PLUGIN_ROOT}/skills/tmb_recovery/scripts/bro-sqlite-readonly.sh) is still available for emergency reads.

Read the full file on GitHub · 83 lines

Files

What ships with it

1 file 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.

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. 3d ago First seen · 83 lines · 66 tokens per session scan A 9d6363295b04

Subscribe to this mod's changes

tmb_recovery is a skill published in the GitHub repository trustmybot/plugin (6 stars, last pushed 4d ago), licensed MIT. It adds 66 tokens to every session and 1,494 once invoked, about $0.0003 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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