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serp402

com.serp402/mcpv1.0.0Image, Video & Audio

Google search for agents: web, news, images, places, shopping, Scholar. Paid per call over x402.

The current version, v1.0.0, was published to the official MCP registry on 2026-09-30. It is distributed as serp402-mcp on npm, filed under Image, Video & Audio by this index, and declares 4 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; the index's current counts put this record in context.

In-path gate · all MCP tools

Using serp402 in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire
Auditable install path →Watch it hold a drift →
Trust verdict · v1 advisory · method
NOT YET SCREENEDno verdict on file

Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-09-30).

Contracts can change after screening, with no version bump. The gate pins serp402’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Related: how to trust an MCP server · screen before install · silent contract drift

Environment variables
SERP402_EVM_PRIVATE_KEY
secret

0x… key holding USDC on Base. Each search costs USD 0.005, charged to this wallet. Either this or the Solana key is required to search.

SERP402_SOLANA_PRIVATE_KEY
secret

ed25519 key (hex or base58) holding USDC on Solana. Alternative to the Base key.

SERP402_MAX_SPEND_USD

Stop searching after this much has been spent in one session. Default 1.00.

SERP402_ENDPOINT

Override the endpoint. Default https://serp402.com

MCP quality score · maturity, not trust · methodology
freshness
25
completeness
15
installability
25
documentation
10
stability
10
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