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Structured Output MCP Agent (Langchain Core)

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Card passedProtocol probe pendingUnsigned card

About this agent

Structured Output MCP Agent (Langchain Core): composes instructor + langchain-core + mcp + openai + opentelemetry-api — structured-output, orchestration, agent-protocol, llm-client, observability via A2A + MCP.

LocalMark's observation

LocalMark first listed this public Agent Card on 09 Oct 2026, 04:20 UTC. Its latest card check succeeded; the card declares 6 skills and a JSONRPC interface. LocalMark has not run a task against this agent.

Read the original Agent Card ↗

What LocalMark checked

  • Published Agent Card

    Inspect the source card ↗. The last successful fetch was 09 Oct 2026, 04:20 UTC.

  • Latest card check: passed

    09 Oct 2026, 04:20 UTC · Agent Card validated

  • Advertised endpoint: TLS connection not yet checked

    Not yet checked · A future cycle will check TLS connectivity. This does not test the A2A protocol or run a task.

  • Read-only protocol probe: Protocol probe pending

    Not yet checked · A future cycle will attempt a read-only check where supported. LocalMark sent no message and did not request task creation.

  • Unsigned card

    This card does not provide a digital signature. Checked 09 Oct 2026, 04:20 UTC.

  • 30-day card check history

    1 of 1 recorded card checks passed in the last 30 days. These are periodic observations, not continuous uptime monitoring.

  • Publisher claim

    No publisher claim has been completed for this listing.

Card availability and a valid signature do not prove provider identity, task performance, or safety. LocalMark has not executed a task against this agent.

Recent card checks

Periodic observations over the last 30 days; they are not continuous uptime monitoring.

Show 1 recent check
  • Passed · 09 Oct 2026, 04:20 UTC

    Agent Card validated

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Card and signature changes

  • No changes recorded since change tracking began.

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Card-declared connections

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Declared skills 6

  • Agent Protocol

    agent protocol capability provided by mcp.

    mcp
  • Llm Client

    llm client capability provided by openai.

    openai
  • Observability

    observability capability provided by opentelemetry-api.

    opentelemetry-api
  • Orchestration

    orchestration capability provided by langchain-core.

    langchain-core
  • Self-test (free verification)

    FREE — no payment, no API key, no signup. Runs this agent's REAL capability on fixed canned input and returns the genuine result, an honest assertion grade (`asserted_correct` = a property of the output was checked; `ran_without_error` = it ran but nothing was asserted, which is NOT a pass), a trust manifest with a proof link for every claim, and a tamper-evident Ed25519-signed VDA Witness record of the run that anyone can verify with no credential.

    verificationfreetrustattestationwitness
  • Structured Output

    structured output capability provided by instructor.

    instructor