Borrowing it
Nothing to install: this file belongs to ashishpatill/tell-proof. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ashishpatill/tell-proof/master/.cursor/skills/tell-schema-contracts/SKILL.mdgit clone --depth 1 https://github.com/ashishpatill/tell-proofWrote 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/ashishpatill/tell-proof/tell-schema-contracts)<a href="https://agentmods.dev/skills/ashishpatill/tell-proof/tell-schema-contracts"><img src="https://agentmods.dev/badge/skills/ashishpatill/tell-proof/tell-schema-contracts/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/ashishpatill/tell-proof/tell-schema-contracts"><img src="https://agentmods.dev/badge/skills/ashishpatill/tell-proof/tell-schema-contracts.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00043 | $0.00341 |
| Opus 5.5 | $0.00017 | $0.00136 |
| Sonnet 5.5 | $0.00009 | $0.00068 |
| Haiku 4.5 | $0.00004 | $0.00034 |
Grade A, and why
tell-schema-contracts 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 1mo 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.
What it actually says
Tell schema contracts
Scope
packages/schema/src/index.ts— all shared contracts
Workflow
- Identify which packages consume the shape (core, taste, redesign, mcp, web)
- Add or extend zod schema with
.default()only when backward-compatible - Export inferred type:
export type Finding = z.infer<typeof Finding> - Run
pnpm -F @tell/schema build - Update consumers to parse at boundaries
- Only then split parallel Tasks across subagents
Key contracts
| Schema | Used by |
|---|---|
CapturePayload |
core capture, web diagnose, MCP |
DesignFingerprint |
core fingerprint, taste context |
Finding |
detectors, taste, report UI |
TasteVerdict |
taste engine, report UI |
ArtDirection |
taste, redesign, voice API |
RedesignProposal |
redesign, MCP, web API |
TellReport |
web UI, MCP, fixtures |
Rules
- Never pass loose objects across package boundaries
- Model JSON must re-validate with zod before use
- Enum changes (
TellDetector,DriftDetector,Verdict) require detector + test updates
DoD
- Schema builds cleanly
- All downstream packages typecheck
- No duplicate type definitions outside
@tell/schema
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.
- 1mo ago First seen · 44 lines · 43 tokens per session scan A 13f4a19d0608
tell-schema-contracts is a skill published in the GitHub repository ashishpatill/tell-proof (2 stars, last pushed 22d ago), licensed MIT. It adds 43 tokens to every session and 341 once invoked, about $0.0002 per session on Opus 5.5. 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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