Hate speech is now routine in the spaces where young people gather: group chats, gaming servers, comment threads, school corridors, and youth clubs. Youth workers meet it daily, but responses are uneven: some intervene late for fear of “making it worse”, others over-expose targeted youth by handling incidents in public, and many lack clear scripts for de-escalation, privacy, and referral. New platform rules, coded language/dog-whistles, and risks like doxxing outpace existing training. In small or rural settings, staff work with limited materials, mixed languages, and few specialists, so “big” toolkits don’t translate. Targets of hate (and sometimes the youth workers themselves) carry the burden, while teams struggle to evidence what works and to keep practice consistfent across colleagues. A seminar built as a peer tool exchange answers this gap. It gathers what already works in different contexts, stress-tests those tools against real scenarios, adapts them for low-resource and multilingual settings, and packages them to a shared, rights-and-safeguarding standard that colleagues can use the next day. The follow-up (local roll-out + clinics) makes sure the results leave the seminar room and land in everyday youth work. 'Hate-Safe Lab' will be a space where youth workers bring their own tools, test them, adapt them for new contexts, and leave with safer versions ready to use at home. For this, we will address the following specific objectives: O1 - Build a shared, usable toolkit. Gather tested tools from different contexts and package them in a common format with clear steps, “when not to use,” escalation/referral, consent/privacy, and adaptations for fewer-opportunities and multilingual settings. O2 - Strengthen core competences. Equip participants to intervene calmly and consistently through de-escalation and bystander moves, community rules and moderation macros, counterspeech/MIL activities, DM-first support, and light evidence routines. O3 - Secure transfer to daily work. Guarantee that tools leave the seminar and enter practice through local roll-out (two peer workshops + one stakeholder briefing per partner) so colleagues adopt the same safeguards and shared language. O4 - Embed inclusion and safety. Design tools and activities so they are safe for both targeted youth and youth workers themselves: FO-first review, opt-in roles, no mandatory disclosure, clear incident flow. O5 - Keep improvement alive. Run monthly online clinics and publish Toolkit v1.1 with field fixes, ensuring results continue to evolve and remain useful beyond the project.