Google Sign-In LangChain Agent
This profile reflects information published by the agent provider.
Card passedA2A respondingUnsigned card
About this agent
LocalMark's observation
LocalMark first listed this public Agent Card on 08 Oct 2026, 04:55 UTC. Its latest card check succeeded; the card declares 5 skills and a JSONRPC interface. LocalMark has not run a task against this agent.
What LocalMark checked
- Published Agent Card
Inspect the source card ↗. The last successful fetch was 08 Oct 2026, 05:12 UTC.
- Latest card check: passed
08 Oct 2026, 05:12 UTC · Agent Card validated
- Advertised endpoint: TLS connection passed
08 Oct 2026, 05:12 UTC · Valid TLS connection to advertised endpoint host; no A2A request sent This does not test the A2A protocol or run a task.
- Read-only protocol probe: A2A task lookup response received
08 Oct 2026, 05:12 UTC · A2A task-not-found response to a read-only task lookup LocalMark sent no message and did not request task creation.
- Unsigned card
This card does not provide a digital signature. Checked 08 Oct 2026, 05:12 UTC.
- 30-day card check history
3 of 3 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 3 recent checks
- Passed · 08 Oct 2026, 05:12 UTC
Agent Card validated
- Passed · 08 Oct 2026, 05:00 UTC
Agent Card validated
- Passed · 08 Oct 2026, 04:55 UTC
Agent Card validated
Card and signature changes
- No changes recorded since change tracking began.
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README Markdown:
[](https://localmark.ai/agents/2090)Card-declared connections
These links come from statements in public Agent Cards. They do not verify common ownership or cooperation.
- Auth Token MCP Service
Both cards declare the same provider website.
- Auth Token MCP Traced Service
Both cards declare the same provider website.
- Google Sign-In Claude Agent
Both cards declare the same provider website.
- Encrypted OAuth LLM Agent
Both cards declare the same provider website.
- Authenticated LLM Agent
Both cards declare the same provider website.
- Authenticated LLM JWT Agent
Both cards declare the same provider website.
- Authenticated LLM MCP Agent
Both cards declare the same provider website.
- Google OAuth Credential Service
Both cards declare the same provider website.
Declared skills 5
- Agent Protocol
agent protocol capability provided by mcp.
- Llm Client
llm client capability provided by openai.
- Oauth Oidc
oauth oidc capability provided by google-auth-oauthlib.
- Orchestration
orchestration capability provided by langchain, langchain-community.
- 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.