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 theYahia/WWmcp --skill flexible-datesgit clone --depth 1 https://github.com/theYahia/WWmcpWrote 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/theyahia/wwmcp/flexible-dates)<a href="https://agentmods.dev/skills/theyahia/wwmcp/flexible-dates"><img src="https://agentmods.dev/badge/skills/theyahia/wwmcp/flexible-dates/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/theyahia/wwmcp/flexible-dates"><img src="https://agentmods.dev/badge/skills/theyahia/wwmcp/flexible-dates.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 | $0.00023 | $0.00631 |
| Opus 5 | $0.00012 | $0.00316 |
| Sonnet 5 | $0.00005 | $0.00126 |
| Haiku 4.5 | $0.00002 | $0.00063 |
Grade A, and why
flexible-dates 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 6d 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 — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/flexible-dates — Cheapest date search
Algorithm
- Resolve city codes. If the user gave city names rather than IATA codes, call
lookup_airportsorlookup_citieswith query and lang to get the correct code. Never guess an IATA code — a wrong one returns plausible prices for the wrong city. - Pick the tool that matches how flexible the user is:
- Whole month open →
get_cheapest_monthwith origin, destination, month (YYYY-MM). - Date roughly fixed →
get_nearest_priceswith origin, destination, departure_at (YYYY-MM-DD) and range_days (1–7, default 3). - Wants the full picture →
get_calendar_priceswith origin and destination: minimum price per date.
- Whole month open →
- If the user refuses connections, call
get_direct_routeswith origin, destination, optional departure_at and limit — non-stop only. - Call
search_flights_priceswith origin, destination, departure_at, return_at, one_way and limit for the actual ticket list on the winning date. - Compare the chosen date against the surrounding ones and state the saving in money, not just "cheaper".
Response format
## MOW → LED, October 2026 — flexible
**Cheapest in month**: 2026-10-14 — 2,140 ₽
**Most expensive**: 2026-10-31 — 7,800 ₽
### ±3 days around 2026-10-17
| Date | Price | vs chosen |
|------|-------|-----------|
| 2026-10-14 | 2,140 ₽ | −1,960 ₽ |
| 2026-10-17 | 4,100 ₽ | — |
**Direct only**: 2 non-stop options from 3,200 ₽.
Shifting departure by 3 days saves 1,960 ₽ per passenger.
Notes
- currency defaults to rub; pass usd or eur if the user thinks in another currency.
- Prices are cached historical minimums from Travelpayouts, not live availability. Say so — the fare may be gone.
get_cheapest_monthneeds the month as YYYY-MM;get_nearest_pricesneeds a full YYYY-MM-DD. Mixing the formats returns nothing.- For inspiration rather than a fixed pair, use
get_popular_directionsorget_special_offerswith just an origin.
Examples
/flexible-dates MOW LED 2026-10
/flexible-dates Москва Стамбул 2026-11-17
/flexible-dates SVO AER direct only
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.
- 6d ago First seen · 62 lines · 23 tokens per session scan A 13194a5ce9f9
flexible-dates is a skill published in the GitHub repository theYahia/WWmcp (29 stars, last pushed 5d ago), licensed MIT. It adds 23 tokens to every session and 631 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 2026-09-06.
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