{
 "schema": "diditwork.giving-plan/v1",
 "url": "https://diditwork.org/plan",
 "url_template": "https://diditwork.org/plan?cause={cause}&cause={cause}&amount={usd}",
 "title": "Plan your giving",
 "rules": [
  "For each cause, shortlist = the charities whose designation is in shortlist_designations, in the order of the cause page (identical to that cause's /questions/ page).",
  "Never re-rank, score, merge units or add figures. Lives saved (GiveWell) and wellbeing (Happier Lives Institute) are different units; say so when a plan spans both.",
  "The amount never changes the shortlist. It only switches on: a funding-gap note when amount > funding_gap.usd, and the large-gift note when amount >= large_gift_usd and the cause has a GiveWell shortlist.",
  "Always offer the evaluator funds listed for the cause as an alternative, the modeled-not-guaranteed caveat, and the questions_to_ask.",
  "A cause with an empty shortlist means no evaluator we cite has given a charity in it a top or promising designation; say that, and link the cause page. It is not a verdict on the work."
 ],
 "shortlist_designations": [
  "GiveWell Top Charity",
  "Happier Lives Institute Promising Charity",
  "Happier Lives Institute Top Charity"
 ],
 "large_gift_usd": 1000000,
 "large_gift_note": "For a gift of this size, check current funding needs: GiveWell doesn't publish a live funding gap for these charities. Its Top Charities Fund directs money to where it's needed most.",
 "caveat": "Modeled, not guaranteed. Each figure is the evaluator's best estimate of the average, built from studies and assumptions, with its own period and source. A gift could do more or less.",
 "causes": [
  {
   "slug": "saving-lives",
   "id": "cause_global_health_life_saving",
   "title": "Saving lives",
   "url": "https://diditwork.org/causes/saving-lives",
   "question_url": "https://diditwork.org/questions/most-effective-charity-to-save-lives",
   "plan_url": "https://diditwork.org/plan?cause=saving-lives",
   "units": [
    "USD_per_life_saved"
   ],
   "shortlist": [
    {
     "id": "org_against_malaria_foundation",
     "slug": "against-malaria-foundation",
     "name": "Against Malaria Foundation",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Exceptionally strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_amf__0",
      "label": "Cost per life saved",
      "display": "$5,500 per life saved",
      "value": 5500,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/amf",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Duration of protection from bed nets and insecticide resistance in GiveWell-funded locations.",
      "from": "int_itn.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/against-malaria-foundation",
     "donate_url": "https://www.againstmalaria.com/Donation.aspx",
     "handoff_url": "https://diditwork.org/give/against-malaria-foundation/from/agent"
    },
    {
     "id": "org_helen_keller_intl",
     "slug": "helen-keller-intl",
     "name": "Helen Keller Intl",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Very strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_hki__0",
      "label": "Cost per life saved",
      "display": "$3,500 per life saved",
      "value": 3500,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/helen-keller-international",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Whether vitamin A supplementation remains as effective amid improved child health since older trials; some studies find small or no effects.",
      "from": "int_vas.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/helen-keller-intl",
     "donate_url": "https://helenkellerintl.org/",
     "handoff_url": "https://diditwork.org/give/helen-keller-intl/from/agent"
    },
    {
     "id": "org_malaria_consortium",
     "slug": "malaria-consortium",
     "name": "Malaria Consortium",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Exceptionally strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_mc_smc__0",
      "label": "Cost per life saved",
      "display": "$4,000 per life saved",
      "value": 4000,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/malaria-consortium",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Level of malaria mortality in areas where GiveWell supports seasonal malaria medicine.",
      "from": "int_smc.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/malaria-consortium",
     "donate_url": "https://www.malariaconsortium.org/pages/donate.htm",
     "handoff_url": "https://diditwork.org/give/malaria-consortium/from/agent"
    },
    {
     "id": "org_new_incentives",
     "slug": "new-incentives",
     "name": "New Incentives",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Exceptionally strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_ni__0",
      "label": "Cost per life saved",
      "display": "$4,500 per life saved",
      "value": 4500,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/new-incentives",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Whether vaccine efficacy is lower in Nigeria than in other evidence settings.",
      "from": "int_cci.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/new-incentives",
     "donate_url": "https://www.newincentives.org/",
     "handoff_url": "https://diditwork.org/give/new-incentives/from/agent"
    }
   ],
   "funds": [
    "givewell-top-charities-fund"
   ],
   "compare": [
    "https://diditwork.org/compare/against-malaria-foundation-vs-helen-keller-intl",
    "https://diditwork.org/compare/against-malaria-foundation-vs-malaria-consortium",
    "https://diditwork.org/compare/against-malaria-foundation-vs-new-incentives",
    "https://diditwork.org/compare/helen-keller-intl-vs-malaria-consortium",
    "https://diditwork.org/compare/helen-keller-intl-vs-new-incentives",
    "https://diditwork.org/compare/malaria-consortium-vs-new-incentives"
   ]
  },
  {
   "slug": "wellbeing",
   "id": "cause_global_health_wellbeing",
   "title": "Improving wellbeing",
   "url": "https://diditwork.org/causes/wellbeing",
   "question_url": "https://diditwork.org/questions/best-charity-for-wellbeing",
   "plan_url": "https://diditwork.org/plan?cause=wellbeing",
   "units": [
    "WELLBY_per_1000_USD"
   ],
   "shortlist": [
    {
     "id": "org_friendship_bench",
     "slug": "friendship-bench",
     "name": "Friendship Bench",
     "designation": "Happier Lives Institute Top Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": {
      "label": "Low to moderate",
      "rated_by": "Happier Lives Institute"
     },
     "headline_figure": {
      "claim_id": "eval_hli_fb__0",
      "label": "WELLBYs per $1,000",
      "display": "48.52 WELLBYs per $1,000 donated",
      "value": 48.52,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/friendship-bench-comprehensive-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Friendship Bench's randomized trials: some or high risk of bias in half of studies; moderate imprecision and inconsistency.",
      "from": "int_friendship_bench.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 3900000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/friendship-bench",
     "donate_url": "https://www.friendshipbenchzimbabwe.org/",
     "handoff_url": "https://diditwork.org/give/friendship-bench/from/agent"
    },
    {
     "id": "org_strongminds",
     "slug": "strongminds",
     "name": "StrongMinds",
     "designation": "Happier Lives Institute Top Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": {
      "label": "Low to moderate",
      "rated_by": "Happier Lives Institute"
     },
     "headline_figure": {
      "claim_id": "eval_hli_sm__0",
      "label": "WELLBYs per $1,000",
      "display": "40.37 WELLBYs per $1,000 donated",
      "value": 40.37,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/strongminds-comprehensive-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Limited relevance of Baird et al. randomized trial to StrongMinds’ current adult partner-delivered model.",
      "from": "int_group_ipt.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 4000000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/strongminds",
     "donate_url": "https://strongminds.org/",
     "handoff_url": "https://diditwork.org/give/strongminds/from/agent"
    },
    {
     "id": "org_pure_earth",
     "slug": "pure-earth",
     "name": "Pure Earth",
     "designation": "Happier Lives Institute Promising Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": null,
     "headline_figure": {
      "claim_id": "eval_hli_pe__0",
      "label": "WELLBYs per $1,000",
      "display": "105.43 WELLBYs per $1,000 donated",
      "value": 105.43,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/pure-earth-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Higher uncertainty than Top Charities; medium depth (~200 hours / ~60% of useful research).",
      "from": "int_lead_reduction.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 1545000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/pure-earth",
     "donate_url": "https://www.pureearth.org/",
     "handoff_url": "https://diditwork.org/give/pure-earth/from/agent"
    },
    {
     "id": "org_taimaka",
     "slug": "taimaka",
     "name": "Taimaka",
     "designation": "Happier Lives Institute Promising Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": null,
     "headline_figure": {
      "claim_id": "eval_hli_taimaka__0",
      "label": "WELLBYs per $1,000",
      "display": "66 WELLBYs per $1,000 donated",
      "value": 66.0,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/taimaka-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "HLI describes cost-effectiveness estimate as extremely speculative; medium depth.",
      "from": "int_cmat.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 400000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/taimaka",
     "donate_url": "https://taimaka.org/",
     "handoff_url": "https://diditwork.org/give/taimaka/from/agent"
    }
   ],
   "funds": [
    "happier-lives-fund"
   ],
   "compare": [
    "https://diditwork.org/compare/friendship-bench-vs-strongminds",
    "https://diditwork.org/compare/friendship-bench-vs-pure-earth",
    "https://diditwork.org/compare/friendship-bench-vs-taimaka",
    "https://diditwork.org/compare/strongminds-vs-pure-earth",
    "https://diditwork.org/compare/strongminds-vs-taimaka",
    "https://diditwork.org/compare/pure-earth-vs-taimaka"
   ]
  },
  {
   "slug": "malaria",
   "id": "cause_malaria",
   "title": "Malaria",
   "url": "https://diditwork.org/causes/malaria",
   "question_url": "https://diditwork.org/questions/best-charity-for-malaria",
   "plan_url": "https://diditwork.org/plan?cause=malaria",
   "units": [
    "USD_per_life_saved"
   ],
   "shortlist": [
    {
     "id": "org_against_malaria_foundation",
     "slug": "against-malaria-foundation",
     "name": "Against Malaria Foundation",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Exceptionally strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_amf__0",
      "label": "Cost per life saved",
      "display": "$5,500 per life saved",
      "value": 5500,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/amf",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Duration of protection from bed nets and insecticide resistance in GiveWell-funded locations.",
      "from": "int_itn.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/against-malaria-foundation",
     "donate_url": "https://www.againstmalaria.com/Donation.aspx",
     "handoff_url": "https://diditwork.org/give/against-malaria-foundation/from/agent"
    },
    {
     "id": "org_malaria_consortium",
     "slug": "malaria-consortium",
     "name": "Malaria Consortium",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Exceptionally strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_mc_smc__0",
      "label": "Cost per life saved",
      "display": "$4,000 per life saved",
      "value": 4000,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/malaria-consortium",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Level of malaria mortality in areas where GiveWell supports seasonal malaria medicine.",
      "from": "int_smc.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/malaria-consortium",
     "donate_url": "https://www.malariaconsortium.org/pages/donate.htm",
     "handoff_url": "https://diditwork.org/give/malaria-consortium/from/agent"
    }
   ],
   "funds": [
    "givewell-top-charities-fund"
   ],
   "compare": [
    "https://diditwork.org/compare/against-malaria-foundation-vs-malaria-consortium"
   ]
  },
  {
   "slug": "nutrition",
   "id": "cause_nutrition",
   "title": "Nutrition",
   "url": "https://diditwork.org/causes/nutrition",
   "question_url": "https://diditwork.org/questions/best-charity-for-nutrition",
   "plan_url": "https://diditwork.org/plan?cause=nutrition",
   "units": [
    "USD_per_life_saved",
    "WELLBY_per_1000_USD"
   ],
   "shortlist": [
    {
     "id": "org_helen_keller_intl",
     "slug": "helen-keller-intl",
     "name": "Helen Keller Intl",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Very strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_hki__0",
      "label": "Cost per life saved",
      "display": "$3,500 per life saved",
      "value": 3500,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/helen-keller-international",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Whether vitamin A supplementation remains as effective amid improved child health since older trials; some studies find small or no effects.",
      "from": "int_vas.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/helen-keller-intl",
     "donate_url": "https://helenkellerintl.org/",
     "handoff_url": "https://diditwork.org/give/helen-keller-intl/from/agent"
    },
    {
     "id": "org_taimaka",
     "slug": "taimaka",
     "name": "Taimaka",
     "designation": "Happier Lives Institute Promising Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": null,
     "headline_figure": {
      "claim_id": "eval_hli_taimaka__0",
      "label": "WELLBYs per $1,000",
      "display": "66 WELLBYs per $1,000 donated",
      "value": 66.0,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/taimaka-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "HLI describes cost-effectiveness estimate as extremely speculative; medium depth.",
      "from": "int_cmat.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 400000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/taimaka",
     "donate_url": "https://taimaka.org/",
     "handoff_url": "https://diditwork.org/give/taimaka/from/agent"
    }
   ],
   "funds": [
    "givewell-top-charities-fund",
    "happier-lives-fund"
   ],
   "compare": []
  },
  {
   "slug": "vaccinations",
   "id": "cause_immunization",
   "title": "Vaccinations",
   "url": "https://diditwork.org/causes/vaccinations",
   "question_url": "https://diditwork.org/questions/best-charity-for-vaccinations",
   "plan_url": "https://diditwork.org/plan?cause=vaccinations",
   "units": [
    "USD_per_life_saved"
   ],
   "shortlist": [
    {
     "id": "org_new_incentives",
     "slug": "new-incentives",
     "name": "New Incentives",
     "designation": "GiveWell Top Charity",
     "evaluator": "GiveWell",
     "evidence_label": {
      "label": "Exceptionally strong",
      "rated_by": "GiveWell"
     },
     "headline_figure": {
      "claim_id": "eval_gw_ni__0",
      "label": "Cost per life saved",
      "display": "$4,500 per life saved",
      "value": 4500,
      "unit": "USD_per_life_saved",
      "evaluator": "GiveWell",
      "period": "2022–2024 average",
      "source_url": "https://www.givewell.org/charities/new-incentives",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Whether vaccine efficacy is lower in Nigeria than in other evidence settings.",
      "from": "int_cci.key_uncertainties.0"
     },
     "funding_gap": null,
     "profile_url": "https://diditwork.org/charities/new-incentives",
     "donate_url": "https://www.newincentives.org/",
     "handoff_url": "https://diditwork.org/give/new-incentives/from/agent"
    }
   ],
   "funds": [
    "givewell-top-charities-fund"
   ],
   "compare": []
  },
  {
   "slug": "mental-health",
   "id": "cause_mental_health_lmic",
   "title": "Mental health",
   "url": "https://diditwork.org/causes/mental-health",
   "question_url": "https://diditwork.org/questions/best-charity-for-mental-health",
   "plan_url": "https://diditwork.org/plan?cause=mental-health",
   "units": [
    "WELLBY_per_1000_USD"
   ],
   "shortlist": [
    {
     "id": "org_friendship_bench",
     "slug": "friendship-bench",
     "name": "Friendship Bench",
     "designation": "Happier Lives Institute Top Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": {
      "label": "Low to moderate",
      "rated_by": "Happier Lives Institute"
     },
     "headline_figure": {
      "claim_id": "eval_hli_fb__0",
      "label": "WELLBYs per $1,000",
      "display": "48.52 WELLBYs per $1,000 donated",
      "value": 48.52,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/friendship-bench-comprehensive-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Friendship Bench's randomized trials: some or high risk of bias in half of studies; moderate imprecision and inconsistency.",
      "from": "int_friendship_bench.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 3900000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/friendship-bench",
     "donate_url": "https://www.friendshipbenchzimbabwe.org/",
     "handoff_url": "https://diditwork.org/give/friendship-bench/from/agent"
    },
    {
     "id": "org_strongminds",
     "slug": "strongminds",
     "name": "StrongMinds",
     "designation": "Happier Lives Institute Top Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": {
      "label": "Low to moderate",
      "rated_by": "Happier Lives Institute"
     },
     "headline_figure": {
      "claim_id": "eval_hli_sm__0",
      "label": "WELLBYs per $1,000",
      "display": "40.37 WELLBYs per $1,000 donated",
      "value": 40.37,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/strongminds-comprehensive-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Limited relevance of Baird et al. randomized trial to StrongMinds’ current adult partner-delivered model.",
      "from": "int_group_ipt.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 4000000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/strongminds",
     "donate_url": "https://strongminds.org/",
     "handoff_url": "https://diditwork.org/give/strongminds/from/agent"
    }
   ],
   "funds": [
    "happier-lives-fund"
   ],
   "compare": [
    "https://diditwork.org/compare/friendship-bench-vs-strongminds"
   ]
  },
  {
   "slug": "safe-water",
   "id": "cause_safe_water",
   "title": "Safe water",
   "url": "https://diditwork.org/causes/safe-water",
   "question_url": null,
   "plan_url": "https://diditwork.org/plan?cause=safe-water",
   "units": [],
   "shortlist": [],
   "funds": [],
   "compare": []
  },
  {
   "slug": "deworming",
   "id": "cause_deworming",
   "title": "Deworming",
   "url": "https://diditwork.org/causes/deworming",
   "question_url": null,
   "plan_url": "https://diditwork.org/plan?cause=deworming",
   "units": [],
   "shortlist": [],
   "funds": [],
   "compare": []
  },
  {
   "slug": "lead-poisoning",
   "id": "cause_lead_pollution",
   "title": "Lead poisoning",
   "url": "https://diditwork.org/causes/lead-poisoning",
   "question_url": "https://diditwork.org/questions/best-charity-for-lead-poisoning",
   "plan_url": "https://diditwork.org/plan?cause=lead-poisoning",
   "units": [
    "WELLBY_per_1000_USD"
   ],
   "shortlist": [
    {
     "id": "org_pure_earth",
     "slug": "pure-earth",
     "name": "Pure Earth",
     "designation": "Happier Lives Institute Promising Charity",
     "evaluator": "Happier Lives Institute",
     "evidence_label": null,
     "headline_figure": {
      "claim_id": "eval_hli_pe__0",
      "label": "WELLBYs per $1,000",
      "display": "105.43 WELLBYs per $1,000 donated",
      "value": 105.43,
      "unit": "WELLBY_per_1000_USD",
      "evaluator": "Happier Lives Institute",
      "period": "published table",
      "source_url": "https://www.happierlivesinstitute.org/pure-earth-summary/",
      "modeled": true,
      "guaranteed": false
     },
     "open_question": {
      "text": "Higher uncertainty than Top Charities; medium depth (~200 hours / ~60% of useful research).",
      "from": "int_lead_reduction.key_uncertainties.0"
     },
     "funding_gap": {
      "usd": 1545000,
      "evaluator": "Happier Lives Institute",
      "as_of": "2026-10-01",
      "source_url": "https://www.happierlivesinstitute.org/charities/"
     },
     "profile_url": "https://diditwork.org/charities/pure-earth",
     "donate_url": "https://www.pureearth.org/",
     "handoff_url": "https://diditwork.org/give/pure-earth/from/agent"
    }
   ],
   "funds": [
    "happier-lives-fund"
   ],
   "compare": []
  },
  {
   "slug": "cash-transfers",
   "id": "cause_cash_transfers",
   "title": "Cash transfers",
   "url": "https://diditwork.org/causes/cash-transfers",
   "question_url": null,
   "plan_url": "https://diditwork.org/plan?cause=cash-transfers",
   "units": [],
   "shortlist": [],
   "funds": [],
   "compare": []
  }
 ],
 "funds": [
  {
   "slug": "givewell-top-charities-fund",
   "id": "org_givewell_top_charities_fund",
   "name": "GiveWell Top Charities Fund",
   "evaluator": "GiveWell",
   "plain": "Pools donations and grants them to GiveWell's Top Charities wherever GiveWell judges the money is needed most.",
   "profile_url": "https://diditwork.org/charities/givewell-top-charities-fund",
   "donate_url": "https://www.givewell.org/top-charities-fund",
   "handoff_url": "https://diditwork.org/give/givewell-top-charities-fund/from/agent"
  },
  {
   "slug": "happier-lives-fund",
   "id": "org_happier_lives_fund",
   "name": "Happier Lives Fund",
   "evaluator": "Happier Lives Institute",
   "plain": "Pools donations for the Happier Lives Institute's recommended wellbeing charities, with a smaller share supporting the Institute's research.",
   "profile_url": "https://diditwork.org/charities/happier-lives-fund",
   "donate_url": "https://www.happierlivesinstitute.org/charities/",
   "handoff_url": "https://diditwork.org/give/happier-lives-fund/from/agent"
  }
 ],
 "questions_to_ask": [
  {
   "question": "Compared with what?",
   "good_sign": "A group that didn’t get the help, chosen the same way, ideally by lottery.",
   "watch_for": "Only a before-and-after, or people who joined compared with people who chose not to.",
   "rule": "No counterfactual, no claim.",
   "method_url": "https://diditwork.org/how-we-know#counterfactual"
  },
  {
   "question": "Would it have happened without my gift?",
   "good_sign": "An honest account of what other funders would have paid for anyway.",
   "watch_for": "Every funder claiming the whole result.",
   "rule": "Credit can’t add up to more than the result.",
   "method_url": "https://diditwork.org/how-we-know#credit"
  },
  {
   "question": "Will we know in a year?",
   "good_sign": "A promise to report back, bad news included, and your own note of what you expected.",
   "watch_for": "No plan to look again.",
   "rule": "Write it down, then check.",
   "method_url": "https://diditwork.org/how-we-know#cost"
  }
 ],
 "agent_recipe": {
  "note": "Two equivalent ways to build the same plan from live endpoints. CI checks that both give exactly this file's shortlists.",
  "mcp": [
   "tools/call list_charities {\"cause\": \"<slug>\"} on https://api.diditwork.org/mcp",
   "keep entries whose designation is in shortlist_designations, in the returned order",
   "tools/call get_org {\"org_id\": \"<id>\"} for figures, or read https://diditwork.org/agents/site-index.json charities[].figures[0] (the headline figure)"
  ],
  "rest": [
   "GET https://api.diditwork.org/v1/charities?cause=<slug> (same list as https://diditwork.org/charities/index.json?cause=<slug>)",
   "keep entries whose designation is in shortlist_designations, in the returned order",
   "figures: https://diditwork.org/agents/site-index.json charities[] matched by url (figures[0] is the headline figure shown in the plan)"
  ],
  "hand_off": "Give donors https://diditwork.org/give/<slug>/from/agent (counted as one anonymous click, 302 to donate_url) or donate_url itself.",
  "share": "Hand donors the plan_url (or url_template filled in) so they see the same plan with sources."
 },
 "how_to_quote": "Name the evaluator and period with every figure, say 'modeled, not guaranteed', and link the charity's profile_url. Do not call any charity 'the best'; say which evaluator designates it and how.",
 "source": "https://diditwork.org/agents/site-index.json"
}