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 skills add Supersynergy/agent-token-saver --skill agent-token-saver-devingit clone --depth 1 https://github.com/Supersynergy/agent-token-saverWrote 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/supersynergy/agent-token-saver/agent-token-saver-devin)<a href="https://agentmods.dev/skills/supersynergy/agent-token-saver/agent-token-saver-devin"><img src="https://agentmods.dev/badge/skills/supersynergy/agent-token-saver/agent-token-saver-devin/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.
<a href="https://agentmods.dev/skills/supersynergy/agent-token-saver/agent-token-saver-devin"><img src="https://agentmods.dev/badge/skills/supersynergy/agent-token-saver/agent-token-saver-devin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 23 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 42 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 143 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00034 | $0.02302 |
| Opus 5 | $0.00017 | $0.01151 |
| Sonnet 5 | $0.00007 | $0.00460 |
| Haiku 4.5 | $0.00003 | $0.00230 |
Grade A, and why
agent-token-saver-devin 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 10d 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 — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Token Saver — Devin Profile
Devin hat keine host-nativen Prompt-Hooks (wie Codex UserPromptSubmit oder Claude PreToolUse). Dieses Profil ersetzt Hooks durch 3 portable Seams:
- Repo-Instructions (
AGENTS.md) — einmal gelesen, keine per-turn Kosten. - Shell-Wrapper (
devin-token-saver.sh) — sourced die universelleagent-token-saver.shund leitet noisy Commands durchrtk. - Knowledge Base —
SKILL.md+ Referenzen, RAG-gated (zero-hot: lädt nur, wenn Task es braucht).
When to use
- Devin-Sessions auf Repo mit
.agents/skills/agent-token-saver-devin/SKILL.md. - Delegate-Subagents (parallele Lanes).
- Workloads mit Host-Instruction-Bloat (10k–60k+ Tokens).
Nicht verwenden bei hook-fähigen Agents (Codex, Claude Code, Hermes, GG Coder) — da agent-token-saver canonical nutzen.
Default ladder
AGENTS.mdnennt Wrapper + Capsule-Protokoll — einmal gelesen.source scripts/devin-token-saver.shinstalliert Aliases (ps,git diff,git log,docker logs,cat *.log) →rtkwenn present, else passthrough. Die universellenats-*/goal-*Funktionen kommen vonagent-token-saver.sh;devin-*sind Backward-Compat-Aliase.si route "<task>" --max 1 --strict --json— explicit CLI, nie auto-load.- KB für tiefe Docs —
FULL_CONTEXT_MEASUREMENT,SUBAGENT_CONTEXT_PROTOCOLlive in Devins KB. - Delegate-Subagents: 300–700 Token Capsule, closed oracle, max 3 Worker.
- Post-Session:
agent-token-ledgerüber exported JSONL →unattributed_input_tokens.
Setup
./install-universal.sh --profile lean --agent repo --project /path/to/target
cp skills/agent-token-saver-devin/SKILL.md /path/to/target/.agents/skills/agent-token-saver-devin/
cp integration/cli/devin-token-saver.sh /path/to/target/scripts/ && chmod +x /path/to/target/scripts/devin-token-saver.sh
cp integration/cli/agent-token-saver.sh /path/to/target/scripts/ && chmod +x /path/to/target/scripts/agent-token-saver.sh
Dann Devin-Block an AGENTS.md anhängen (Template in integration/cli/devin-bootstrap.md).
What ships with it
2 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.
- 10d ago First seen · 149 lines · 34 tokens per session scan A b6d2abc781ae
agent-token-saver-devin is a skill published in the GitHub repository Supersynergy/agent-token-saver (7 stars, last pushed 4d ago), licensed MIT. It adds 34 tokens to every session and 2,302 once invoked, about $0.0002 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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