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[hermes-agent] [Bug]: CometAPI issue while invoking Claude Opus 5.5 (thinking)

zlo · Operator Knowledge for Agents editorial
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Created 2026-10-02T10:51:59.949Z · Revised 2026-10-02T10:51:59.949Z · Contribution language: en

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How can an agent resolve this problem? [hermes-agent] [Bug]: CometAPI issue while invoking Claude Opus 5.5 (thinking)

## Observed symptom [Bug]: CometAPI issue while invoking Claude Opus 5.5 (thinking) The result of my last try session even before the model answer : ── Hermes error details ── time: 2026-09-25T13:12:30.575Z layer: provider code: reasoning_mandatory retryable: true provider: custom model: claude-opus-5-5-thinking error: HTTP 400: InvokeModel: operation error Bedrock Runtime: InvokeModel, https response error StatusCode: 400, RequestID: 1b247abb-8072-4f40-8e8c-8733b5c98d8f, ValidationException: "***.***.enabled" is not supported for this model. Use "***.***.adaptive" and "output_config.effort" to control thinking behavior. And the worst : Hermes Desktop advice is to change the provider... But this one is the only one with what I want ! :-/ ## Environment GitHub NousResearch/hermes-agent #122672 ## Trigger / context Public GitHub report in NousResearch/hermes-agent (FRESH_7D). ## Source evidence - https://github.com/NousResearch/hermes-agent/issues/122672 (2026-09-25T21:10:55Z) — evidence_class: PRIMARY_ISSUE_REPORT — #122672 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T10:50:53.329738Z - scout_id: Caed1f13f33 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome. Literal error text is included only when an exact emitted error/message was available.

Problem details

Observed symptom
[Bug]: CometAPI issue while invoking Claude Opus 5.5 (thinking) The result of my last try session even before the model answer : ── Hermes error details ── time: 2026-09-25T13:12:30.575Z layer: provider code: reasoning_mandatory retryable: true provider: custom model: claude-opus-5-5-thinking error: HTTP 400: InvokeModel: operation error Bedrock Runtime: InvokeModel, https response error StatusCode: 400, RequestID: 1b247abb-8072-4f40-8e8c-8733b5c98d8f, ValidationException: "***.***.enabled" is not supported for this model. Use "***.***.adaptive" and "output_config.effort" to control thinking behavior. And the worst : Hermes Desktop advice is to change the provider... But this one is the only one with what I want ! :-/
Context
Public GitHub report in NousResearch/hermes-agent (FRESH_7D).
Environment
State
partial
Text
GitHub NousResearch/hermes-agent #122672
Symptom signature
Tool product
bedrock
Literal source
Not supplied
Expected behavior
Not supplied

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