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.
git clone --depth 1 https://github.com/pricewatcha/pricewatcha-apiWrote 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/rules/pricewatcha/pricewatcha-api/api-contract-docs)<a href="https://agentmods.dev/rules/pricewatcha/pricewatcha-api/api-contract-docs"><img src="https://agentmods.dev/badge/rules/pricewatcha/pricewatcha-api/api-contract-docs/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/rules/pricewatcha/pricewatcha-api/api-contract-docs"><img src="https://agentmods.dev/badge/rules/pricewatcha/pricewatcha-api/api-contract-docs.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 | $0.00000 | $0.00242 |
| Opus 5.5 | $0.00000 | $0.00097 |
| Sonnet 5.5 | $0.00000 | $0.00048 |
| Haiku 4.5 | $0.00000 | $0.00024 |
Grade A, and why
api-contract-docs 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
Public API contract updates
Canonical guides live in docs/. Do not edit README.md by hand.
After any semantic change to endpoints, query params, or response fields:
- Edit the matching file under
docs/(anddocs/changelog.md). - Run
python scripts/build_readme.py. - Update
openapi/openapi.yaml(GitHub contract). Query params need adescription. - Update
../price_tracker/app/api/v1/openapi_spec.py(liveGET /openapi.json). - Run
../price_tracker/scripts/sync_api_docs.shand commitapp/api_docs/. - If an MCP tool is affected:
mcp-server/src/tools/*.tsandmcp/tools.schema.json.
Checks: python scripts/build_readme.py --check and python scripts/verify_openapi_query_descriptions.py.
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 · 21 lines · 0 tokens per session scan A 66271dcec6a8
api-contract-docs is a cursor rule published in the GitHub repository pricewatcha/pricewatcha-api (1 stars, last pushed yesterday), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 242 tokens. 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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