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 agentmods add skills/benwu95/prospec/prospec-verifynpx skills add benwu95/prospec --skill prospec-verifygit clone --depth 1 https://github.com/benwu95/prospecWrote 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/benwu95/prospec/prospec-verify)<a href="https://agentmods.dev/skills/benwu95/prospec/prospec-verify"><img src="https://agentmods.dev/badge/skills/benwu95/prospec/prospec-verify.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 | $0.00070 | $0.09673 |
| Opus 5 | $0.00035 | $0.04836 |
| Sonnet 5 | $0.00014 | $0.01935 |
| Haiku 4.5 | $0.00007 | $0.00967 |
Grade A, and why
prospec-verify 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 today.
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 — 465 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prospec Verify Skill
Activation
When triggered, briefly describe:
- That you'll perform a comprehensive audit of the implementation
- All 5+1 verification dimensions will be checked (task completion, spec compliance, Constitution full audit, Knowledge ↔ implementation consistency, tests, and design consistency if UI scope applies)
- That the dimensions are adjudicated by two different authorities: 1/5, 4/5 and 5/5 by the deterministic
prospec checkengine (you interpret and narrate its verdicts, you do not decide them), 2/5 and 6 by an independent fresh-context reviewer, 3/5 by both (mechanical rule inventory, judged violations) - A quality grade (S/A/B/C/D) with deployment recommendation will be provided
CLI Prerequisite (required)
The prospec CLI is a required file for this skill — its deterministic steps call
prospeccommands. Probe BEFORE any other step; there is no manual fallback.
- Run
prospec --version(Bash). - Command not found / not executable → STOP. Ask the user to install the prospec standalone
executable — the one-click installer script from the project README (macOS/Linux
install.sh, Windowsinstall.ps1) or a release binary from GitHub Releases; prospec is NOT published to npm. Then re-run this skill. - Version older than 2.1.0 → STOP. Report the installed vs required version and ask the user to upgrade, then re-run this skill.
Hand-executing a CLI-owned mutation is NEVER the fallback — that re-introduces the nondeterministic serialization this contract exists to remove.
Startup Loading
- [STABLE] Read
prospec/CONSTITUTION.md— for full audit - [DYNAMIC] Read
.prospec/changes/[name]/tasks.md— task completion status - [DYNAMIC] Read
.prospec/changes/[name]/plan.md— design intent (skip forscale: quick/backfill— no plan by contract) - [DYNAMIC] Read
.prospec/changes/[name]/delta-spec.md— file specifications (skip forscale: quick— no delta-spec by contract; 2/5 isnot-applicable) - [DYNAMIC] Read
.prospec/changes/[name]/proposal.md— acceptance scenarios - [DYNAMIC] Read
.prospec/changes/[name]/metadata.yaml— current status (updated on pass; see Status Update) - [DYNAMIC] Load the Feature Spec requirements this change touches — for each REQ id the delta-spec names, run
prospec spec show <feature> --req <ids>(Bash), the**Feature:**field giving the feature. Quote them for the 2/5 comparison; never read the wholeprospec/specs/features/directory or a whole spec file — 2/5 compares this change against the REQs it touches, and one spec can run to tens of thousands of tokens of unrelated capability record. Add--story <US-N>when a REQ's surrounding story matters. An ADDED REQ is expected to be missing here: requirements graduate into the trust zone atprospec-archivePhase 3.5, so the command reports every ADDED id as unmatched and exits non-zero — that is the designed state, never a 2/5 finding. Read the MODIFIED/REMOVED ids from the spec (they exist), and take each ADDED REQ's text from the delta-spec entry itself;--story <US-N>is what shows you the section an ADDED REQ will land in. (skip forscale: quick— no delta-spec REQs to compare) - [DYNAMIC] Read
prospec/specs/product.md— understand product-level overview - [DYNAMIC] Run
prospec check --json(Bash), then read theprospec-report.jsonfile — the deterministic verdicts for Verification 1/5, 4/5 and 5/5, plus the Constitution rule inventory 3/5 audits against (the same engine the CI gate runs).--jsonwrites the file; stdout is a human-readable summary, not JSON — take structured facts from the file. Its shape (checks keyed byidunderstructural.checks[], problems understructural.findings[], freshness understructural.knowledge_health.modules[], rules understructural.constitution.rules[]) is documented inreferences/drift-report-format.md— consult it instead of reverse-engineering the JSON. The CLI is a required file (see CLI Prerequisite — a missing engine is a STOP at the probe, never a gradable state); never adjudicate a machine dimension yourself
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.
- today Changed · +8 lines a64db058e8e4
- 4d ago First seen · 457 lines · 70 tokens per session scan A 33712f38105f
prospec-verify is a skill published in the GitHub repository benwu95/prospec (5 stars, last pushed today), licensed MIT. It adds 70 tokens to every session and 9,673 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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