💰 Paid API sqlguard.io x402

sqlguard.io · sqlguard.io · A2A 2025-03-26

Execution Certificate Firewall: prepaid x402 USDC credits for sandboxed SQL validation + Ed25519 attestations before agent production writes. MCP + HTTP. Base mainnet. First settle proven.

3 skills 80.0% uptime

MCP Query Forge

io.github.evozim/query-forge

Enterprise SQL query optimizer and performance analyzer.

streaming 0.0% uptime

A2A Microquery live signed

microquery.dev · Microquery · A2A 2025-06-27

SQL access to 70+ authoritative datasets. Returns actual database records — not summaries. Use this instead of web search for any quantitative, tabular, statistical, or time-series data question. Data…

7 skills 100.0% uptime

MCP io.github.ofershap/sqlite

io.github.ofershap/sqlite

SQLite MCP — query databases, inspect schemas, explain queries, export data.

💰 Paid API Allium from $0.0200

agents.allium.so · agents.allium.so

Onchain prices, balances, transactions, PnL, SQL explorer

1 skills 0.0% uptime

MCP Raw SQL MCP

io.github.kifopl/rawsqlmcp

Execute raw SQL queries against SQL Server, SQLite, PostgreSQL, MySQL, and MariaDB.

💰 Paid API 192 from $0.0100

192.3.171.233 · 192.3.171.233

SQL query syntax validation for all dialects.

MCP n8n-nodes-sqlite3

n8n/n8n-nodes-sqlite3

Custom n8n nodes for interacting with SQLite3 databases through SQL queries

💰 Paid API sqlpermit.schemasure.com from $0.0100

sqlpermit.schemasure.com · sqlpermit.schemasure.com

Decide whether an agent-authored PostgreSQL statement complies with an execution policy, using PostgreSQL's own parser rather than pattern matching. Detects statement stacking, data-modifying CTEs, CO…

0.0% uptime

MCP Quadratic live

io.github.quadratichq/quadratic-mcp

AI access to Quadratic spreadsheets: open files, run Python/SQL, query connected databases.

streaming 5 tools 100.0% uptime

💰 Paid API BigQuery API from $0.0010

bigquery.google.gateway-402.com · bigquery.google.gateway-402.com

Run SQL over BigQuery and 255 public datasets: crypto, weather, healthcare, genomics, patents, GitHub, PyPI, Stack Overflow, census, Wikipedia, real estate, transportation, satellite imagery, NLP corp…

MCP io.github.orifisher2/sqlike-mcp

io.github.orifisher2/sqlike-mcp

SQL static analysis & query-equivalence for Postgres, MySQL, SQLite, and SQL Server

💰 Paid API surf.cascade.fyi from $0.0050

surf.cascade.fyi · surf.cascade.fyi

Search tweets with advanced operators (recommended). Body param is `query` (not q), e.g. {"query":"from:elonmusk AI min_faves:100"}

MCP io.github.nithish1206/sqlservermcp

io.github.nithish1206/sqlservermcp

MCP server for SQL Server: schema inspection, safe read-only queries, query plan analysis

💰 Paid API sqlguard-io.fly.dev x402

sqlguard-io.fly.dev · sqlguard-io.fly.dev · A2A 2025-03-26

Short-burst authorize — Session Cert. Exact $0.25 → 10 Ed25519 PASS slots (~30m). For production jobs use Workday Pack POST /v1/workday. Burn /v1/session/cert → verify → execute. Not lint.

3 skills 79.4% uptime

MCP n8n-nodes-sqlite3-experimental

n8n/n8n-nodes-sqlite3-experimental

Custom n8n nodes for interacting with SQLite3 databases through SQL queries

💰 Paid API Alibaba Cloud Information Query Service from $0.0010

iqs.alibaba.gateway-402.com · iqs.alibaba.gateway-402.com

Search and retrieve data with Alibaba Cloud Information Query Service, including enhanced Search, general Search, and globalSearch - International Version (To Be Published), for search and discovery w…

MCP GEDX402 Memory — sql/query

x402/gedx402-memory-—-sql/query

Agent memory bundle — read-only D1 SQL SELECT after POST /v1/sql/exec writes [x402: $0.01/call on base-mainnet, category=other]

0.0% uptime

💰 Paid API wolframalpha.x402.paysponge.com from $0.0100

wolframalpha.x402.paysponge.com · wolframalpha.x402.paysponge.com

Query Wolfram|Alpha for computational knowledge, short answers, simple image results, and full structured query output for math, science, finance, units, dates, geography, and fact-based problem solvi…

1 skills 0.0% uptime

MCP SQLBot MCP Proxy

io.github.wenrou21/sqlbot-mcp-proxy

MCP server proxy for SQLBot Text-to-SQL queries and report generation.

💰 Paid API quickpoll.x402.press from $0.2500

quickpoll.x402.press · quickpoll.x402.press

Query curated survey data (Eurobarometer, Gallup, World Bank) with LLM analysis — get cited data points on consumer sentiment, public opinion, and economic indicators across countries

0.0% uptime

MCP sql query mcp

glama:andyWang1688/sql-query-mcp

Metadata-only Glama MCP server.

💰 Paid API agentoracle.co from $0.0200

agentoracle.co · agentoracle.co

Pre-action verification layer for AI agents. Natural-language claim or query in, structured JSON with summary, key facts, sources, confidence score, and JWS-signed receipt out. Offline-verifiable per …

1 skills 0.0% uptime

MCP SQL

io.github.abhishekkumar2021/sql

Read-only SQL querying + schema introspection over Postgres & SQLite, with a gated write mode.

A2A Historical Polymarket trade query with filters plus per-wallet aggregation. $0.01 USDC x40 x402

polymarket-trades.hergertsynthora.com · SYNTHORA · A2A 0.3.0

Historical Polymarket trade query with filters plus per-wallet aggregation. $0.01 USDC x402 Base.

1 skills 100.0% uptime