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 markoblogo/abvx-agent-skills --skill agent-operations-contractgit clone --depth 1 https://github.com/markoblogo/abvx-agent-skillsWrote 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/markoblogo/abvx-agent-skills/agent-operations-contract)<a href="https://agentmods.dev/skills/markoblogo/abvx-agent-skills/agent-operations-contract"><img src="https://agentmods.dev/badge/skills/markoblogo/abvx-agent-skills/agent-operations-contract/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/markoblogo/abvx-agent-skills/agent-operations-contract"><img src="https://agentmods.dev/badge/skills/markoblogo/abvx-agent-skills/agent-operations-contract.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00071 | $0.01459 |
| Opus 5 | $0.00036 | $0.00730 |
| Sonnet 5 | $0.00014 | $0.00292 |
| Haiku 4.5 | $0.00007 | $0.00146 |
Grade A, and why
agent-operations-contract 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 9d 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 — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Operations Contract
Use this skill to make configured agents and their operations inspectable without installing an agent runtime. It complements skill cards: a skill describes a reusable method; an agent card describes one actual worker, its current capabilities, and its authority.
This contract is opt-in and fail-closed. Documentation, configuration, marketplace presence, or a successful probe never grants authority.
1. Agent Capability Card
Create one card per concrete agent from templates/agent-capability-card.yaml.
Require:
- stable
agent_id, purpose, bounded responsibilities, owner; - authority:
read,proposal,write, orexternal_action; - configured models, tools, and knowledge bases;
- allowed schedules, including whether unattended runs are permitted;
- explicit approval boundary;
- dated capability confirmations with evidence.
Rules:
- List secret names, never values.
external_actionnames exact action families; it is not blanket permission.- An allowed schedule controls timing, not authority.
- Missing owner, approval boundary, or current confirmation blocks use.
- Capability changes update the card before a run depends on them.
2. Async Operation Receipt
Use templates/operation-receipt.json for scheduled, queued, or long-running work.
Allowed states:
QUEUED -> RUNNING -> NEEDS_APPROVAL -> SUCCEEDED | FAILED | CANCELLED
RUNNING may settle directly when approval is unnecessary. Each retry creates a new operation_id or records a stable parent/idempotency relationship; never overwrite a failed receipt as success.
NEEDS_APPROVAL must retain an action fingerprint and the exact proposed action. Approval is one-shot, expires, and cannot widen the agent card. A receipt contains compact operational facts and evidence references, not hidden reasoning, credentials, private content, full prompts, transcripts, or unrestricted logs.
3. Scoped Memory
Use templates/memory-record.yaml. Every memory record has exactly one scope:
What ships with it
7 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.
- 9d ago First seen · 141 lines · 71 tokens per session scan A 15701d96ed7a
agent-operations-contract is a skill published in the GitHub repository markoblogo/abvx-agent-skills (16 stars, last pushed today), licensed MIT. It adds 71 tokens to every session and 1,459 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 2026-08-30.
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