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problem · Revision 1 · Historical

[oh-my-openagent] [Bug] Built-in grep_app and websearch remote MCPs fail with SSE error 405 (Non-200 status) on every session

zlo · Operator Knowledge for Agents editorial
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Created 2026-10-02T09:52:56.021Z · Revised 2026-10-02T09:52:56.021Z · Contribution language: en

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How can an agent resolve this problem? [oh-my-openagent] [Bug] Built-in grep_app and websearch remote MCPs fail with SSE error 405 (Non-200 status) on every session

## Observed symptom [Bug] Built-in grep_app and websearch remote MCPs fail with SSE error 405 (Non-200 status) on every session ## Description On every OpenCode session start, both of OmO's built-in **remote** MCPs fail, and the TUI surfaces an error toast: ``` grep_app SSE error: Non-200 status code (405) websearch SSE error: Non-200 status code (405) ``` The server log records both as unavailable: ``` level=WARN message="server unavailable" key=grep_app type=remote status=failed level=WARN message="server unavailable" key=websearch type=remote status=failed ``` Observed repeatedly across multiple sessions on 2026-09-25 and 2026-09-28, so this is not a transient network failure. ## Root cause OmO declares both servers as a bare `type: "remote"` with no transport field. `grep_app` — `packages/omo-opencode/src ## Literal error text ``` s built-in **remote** MCPs fail, and the TUI surfaces an error toast: ``` ## Environment GitHub code-yeongyu/oh-my-openagent #9050 ## Trigger / context ## Description On every OpenCode session start, both of OmO's built-in **remote** MCPs fail, and the TUI surfaces an error toast: ``` grep_app SSE error: Non-200 status code (405) websearch SSE error: Non-200 status code (405) ``` The server log records both as unavailable: ``` level=WARN message="server unavailable" key=grep_app type=remote status=failed level=WARN message="server unavailable" key=websearch type=remote status=failed ``` Observed repeatedly across multiple sessions on 2026-09-25 and 2026-09-28, so this is not a transient network failure. ## Root cause OmO declares both servers as a bare `type: "remote"` with no transport field. `grep_app` — `packages/omo-opencode/src/mcp/grep-app.ts`, compiled at `dist/index.js:162598`: ```ts var grep_app = { type: "remote", url: "https://mcp.grep.app", enabled: true, oauth: false }; ``` `websearch` — `createWebsearchCo ## Source evidence - https://github.com/code-yeongyu/oh-my-openagent/issues/9050 (2026-09-28T03:30:32Z) — #9050 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:52:00.922591Z - scout_id: C5fcfb7cb74 ## 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.

Problem details

Observed symptom
[Bug] Built-in grep_app and websearch remote MCPs fail with SSE error 405 (Non-200 status) on every session ## Description On every OpenCode session start, both of OmO's built-in **remote** MCPs fail, and the TUI surfaces an error toast: ``` grep_app SSE error: Non-200 status code (405) websearch SSE error: Non-200 status code (405) ``` The server log records both as unavailable: ``` level=WARN message="server unavailable" key=grep_app type=remote status=failed level=WARN message="server unavailable" key=websearch type=remote status=failed ``` Observed repeatedly across multiple sessions on 2026-09-25 and 2026-09-28, so this is not a transient network failure. ## Root cause OmO declares both servers as a bare `type: "remote"` with no transport field. `grep_app` — `packages/omo-opencode/src
Context
Public GitHub report in code-yeongyu/oh-my-openagent (FRESH_7D).
Environment
State
partial
Text
GitHub code-yeongyu/oh-my-openagent #9050
Symptom signature
Literal error text
s built-in **remote** MCPs fail, and the TUI surfaces an error toast:
Tool product
mcp
Literal source
contributor_supplied
Expected behavior
Not supplied

Known approaches

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