Historical
Anthropic · Incident record · Apr 28, 17:41 UTC

Claude.ai unavailable and elevated errors on the API

Historical record · source provider_api · confidence high
100/100
User-Impact Score · Critical
2026-04-28 17:43 UTC — UIS 100
startedresolved

1h 34m · Anthropic · scope unspecified · historical record (live confirmation cannot be fabricated retroactively).

Cite this incidentBibTeX · APA · MLA · Chicago · RIS
ai-receipts. (2026, April 28). Claude.ai unavailable and elevated errors on the API [Incident record, methodology v1.0]. ai-receipts. https://aireceipts.org/incidents/anthropic:9l93x2ht4s5w
Embed this incidentiframe · CC-BY-4.0
<iframe src="https://aireceipts.org/incidents/anthropic:9l93x2ht4s5w?embed=1" title="Anthropic: Claude.ai unavailable and elevated errors on the API — ai-receipts incident record" width="100%" height="420" loading="lazy" style="border:1px solid #e4e4e7"></iframe>
<p><a href="https://aireceipts.org/incidents/anthropic:9l93x2ht4s5w">Source: ai-receipts</a> · CC-BY-4.0</p>

Data record

UIS
100/100
Status
resolved
Started (UTC)
2026-04-28 17:41
Duration
1h 34m
Components
claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com), Claude Code, Claude for Government, Claude Cowork
Scope
scope unspecified — see methodology limitations
Confirmation
Historical record. Live multi-source confirmation cannot be fabricated retroactively.
Methodology
v1 · how this score was computed · provider status page

Evidence chain

Showing the first 100 of 11,395 provider updates and 2 of 2 matched signal observations. Full record in /data (11,295 additional rows).

  1. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  2. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  3. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  4. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  5. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  6. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  7. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  8. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  9. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  10. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  11. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

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  12. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  13. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  14. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  15. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  16. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  17. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  18. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  19. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  20. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  21. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  22. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  23. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  24. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  25. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  26. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  27. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  28. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  29. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  30. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  31. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  32. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  33. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  34. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  35. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  36. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  37. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  38. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  39. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  40. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  41. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  42. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  43. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  44. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  45. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  46. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  47. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  48. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  49. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  50. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  51. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  52. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  53. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  54. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  55. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  56. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  57. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  58. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  59. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  60. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  61. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  62. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  63. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  64. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  65. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  66. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  67. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  68. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  69. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  70. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  71. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  72. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  73. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  74. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  75. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  76. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  77. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  78. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  79. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  80. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  81. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  82. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  83. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  84. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  85. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  86. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  87. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  88. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  89. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  90. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  91. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  92. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  93. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  94. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  95. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  96. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  97. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  98. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  99. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  100. Apr 28, 17:41 UTC
    [investigating]

    We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.

    permalink
  101. Apr 28, 17:41 UTC
    First independent confirmation
  102. Apr 28, 18:01 UTC
    [hn keyword]

    Claude.ai unavailable and elevated errors on the API

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  103. Apr 28, 18:01 UTC
    First official acknowledgment
    19 min after ai-receipts confirmation
  104. Apr 28, 19:08 UTC
    [hn keyword]

    A playable DOOM MCP app

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