Certificate of Insurance Review

Certificate of Insurance Review is a skill for Claude Code, Codex from zgbrenner/agentcounsel. It costs 29 tokens per session (1,690 once invoked), scanned A, original, MIT.

A document review that compares certificates of insurance and attached endorsements with the insurance requirements in a contract. It records what the documents state and flags missing or mismatched items for an attorney.

In plain words
What is it for?
It is for checking policy types, limits, dates, additional-insured status, waiver of subrogation, and primary and noncontributory endorsements against contract requirements.
Why use it?
It helps find missing policy details or endorsements before a transaction, claim, or insurance tender. It also avoids treating a certificate as proof that coverage exists.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It is for checking policy types, limits, dates, additional-insured status, waiver of subrogation, and primary and noncontributory endorsements against contract requirements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zgbrenner/agentcounsel/certificate-of-insurance-review
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.

Any agent
npx skills add zgbrenner/agentcounsel --skill certificate-of-insurance-review
Clone the repo
git clone --depth 1 https://github.com/zgbrenner/agentcounsel

Made for: Claude Code, Codex.

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 Certificate of Insurance Review

README.md
[![agentmods](https://agentmods.dev/badge/skills/zgbrenner/agentcounsel/certificate-of-insurance-review/github.svg)](https://agentmods.dev/skills/zgbrenner/agentcounsel/certificate-of-insurance-review)
Your own site
<a href="https://agentmods.dev/skills/zgbrenner/agentcounsel/certificate-of-insurance-review"><img src="https://agentmods.dev/badge/skills/zgbrenner/agentcounsel/certificate-of-insurance-review/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.

agentmods 80×15 button for Certificate of Insurance Review

Your own site · 80×15
<a href="https://agentmods.dev/skills/zgbrenner/agentcounsel/certificate-of-insurance-review"><img src="https://agentmods.dev/badge/skills/zgbrenner/agentcounsel/certificate-of-insurance-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,690 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00029 $0.01690
Opus 5 $0.00015 $0.00845
Sonnet 5 $0.00006 $0.00338
Haiku 4.5 $0.00003 $0.00169

Measured 9d ago against content hash e4dd2b7bceb0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

Certificate of Insurance Review 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.

skills/insurance/certificate-of-insurance-review/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Certificate of Insurance Review

Purpose

Review one or more certificates of insurance (COIs) and related endorsements — additional insured schedules, waiver of subrogation endorsements, primary and noncontributory endorsements — against contract insurance requirements where provided, into a source-cited comparison table, a missing-endorsement list, and a mismatch list for attorney review. This skill compares what the documents show against the stated requirements; it treats a certificate as evidence only of what it states, not as proof of coverage.

Use When

  • A certificate of insurance must be checked against contract insurance requirements.
  • A reviewer needs the certificate's policy types, limits, dates, and endorsements extracted and compared.
  • Missing endorsements or mismatches with the contract must be surfaced before a transaction or tender.

Required Inputs

  • The certificate(s) of insurance, and any attached or referenced endorsements (additional insured, waiver of subrogation, primary and noncontributory), with source references.
  • The contract insurance requirements if available — or a completed insurance-requirements-contract-review — with source references; if not provided, the review compares against nothing and says so.
  • The user's role (certificate holder, named insured, contracting party, broker, or other) — or not provided.
  • The relationship the certificate evidences (the underlying contract, lease, or engagement) — or not provided.
  • The certificate and policy dates, echoed and marked [deadline verification required].

If the certificate is missing, record it as not provided and return the missing-information list first. Do not review a certificate from a description alone.

Do Not Use When

  • The request is to confirm that coverage exists, is in force, or extends to a particular party.
  • The request is to determine additional insured status, waiver of subrogation, or primary/noncontributory status as a legal matter.
  • The request is to conclude that contract requirements are legally met or unmet.
  • The request is to review the underlying policy (use insurance-policy-summary) or the contract's insurance clauses (use insurance-requirements-contract-review), or for legal advice.

Read the full file on GitHub · 106 lines

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. 9d ago First seen · 106 lines · 29 tokens per session scan A e4dd2b7bceb0

Subscribe to this mod's changes

Certificate of Insurance Review is a skill published in the GitHub repository zgbrenner/agentcounsel (19 stars, last pushed 1mo ago), licensed MIT. It adds 29 tokens to every session and 1,690 once invoked, about $0.0001 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 2026-09-03.

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