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sigtap Agent Tools

R0· no sign-in

13 paid x402 tools, USDC/Base. Free check: GET /preview<path>=200 sample. Copy-paste pay: /llms.txt

v1.0.2 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality79good
Trust93of 100
Uptime, 30 days95%
Latency p50386 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "sigtap-agent-tools": {
      "type": "http",
      "url": "https://sigtap-mcp.sigtap.workers.dev/mcp"
    }
  }
}
claude mcp add --transport http sigtap-agent-tools https://sigtap-mcp.sigtap.workers.dev/mcp
[mcp_servers.sigtap-agent-tools]
url = "https://sigtap-mcp.sigtap.workers.dev/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sigtap-agent-tools": {
      "type": "remote",
      "url": "https://sigtap-mcp.sigtap.workers.dev/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "sigtap-agent-tools": {
      "type": "http",
      "url": "https://sigtap-mcp.sigtap.workers.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=sigtap-agent-tools&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vc2lndGFwLW1jcC5zaWd0YXAud29ya2Vycy5kZXYvbWNwIn0%3D"
}
{
  "servers": {
    "sigtap-agent-tools": {
      "type": "http",
      "url": "https://sigtap-mcp.sigtap.workers.dev/mcp"
    }
  }
}
{
  "mcpServers": {
    "sigtap-agent-tools": {
      "httpUrl": "https://sigtap-mcp.sigtap.workers.dev/mcp"
    }
  }
}
extensions:
  "sigtap-agent-tools":
    enabled: true
    name: "sigtap-agent-tools"
    type: streamable_http
    uri: "https://sigtap-mcp.sigtap.workers.dev/mcp"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene71 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: hash_text (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); jwt_decode (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); regex_test (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
  • pass
    tools.token_costabout 1,635 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

13 tools, about 1,635 tokens to load them all · tool set 1d4a7be3b341 · checked 2026-10-20 17:34 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 93 / 100

provenance90
liveness98
freshness85
hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-95% ~updated-43d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://sigtap-mcp.sigtap.workers.dev/mcp streamable-httpnoneyes95%386 ms2025-11-252026-10-20

Tools (13)

catalogList all 12 paid tools with live prices + free preview routes (FREE, no payment)
crypto_priceCoinbase spot/buy/sell price with spread percent Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/crypto-price = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.002 USDC on Base, x402)
deliverability_auditSPF/DKIM/DMARC deliverability audit for a sending domain Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/deliverability = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.003 USDC on Base, x402)
domain_ageDomain registration date, age in days and registrar via RDAP Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/domain-age = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.003 USDC on Base, x402)
email_grade12-point cold email score with concrete fixes Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/grade = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.005 USDC on Base, x402)
email_templatePersonalized cold email from proven templates Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/template = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.01 USDC on Base, x402)
hash_textSHA-256/384/512, hex, base64, base64url and CRC32 of a UTF-8 string Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/hash = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.001 USDC on Base, x402)
json_toolsFlatten JSON to dot paths or convert rows to CSV Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/json = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.001 USDC on Base, x402)
jwt_decodeDecode a JWT header+payload with safety flags (never verifies the signature) Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/jwt-decode = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.001 USDC on Base, x402)
regex_testRegex matches with groups, count and a backtracking-risk heuristic Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/regex = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.001 USDC on Base, x402)
slugifyUnicode-aware url-safe slug (latin + Cyrillic transliteration) Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/slug = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.001 USDC on Base, x402)
uuid_batchBatch random IDs: UUIDv4, UUIDv7, ULID or nanoid Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/uuid = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.001 USDC on Base, x402)
weatherCurrent weather + next 3h temperatures (open-meteo) Free check: https://sigtap-outreach-api.sigtap.workers.dev/preview/tools/weather = 200 demo sample, no wallet. Paid call: 402 challenge -> sign -> retry = settled on-chain. ($0.001 USDC on Base, x402)

Schemas: list_tools.

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More from io.github.unnamedaiagent

Official server.json
{
  "name": "io.github.unnamedaiagent/sigtap-agent-tools",
  "_meta": {
    "io.modelcontextprotocol.registry/publisher-provided": {
      "docs": {
        "llms": "https://sigtap-outreach-api.sigtap.workers.dev/llms.txt",
        "health": "https://sigtap-mcp.sigtap.workers.dev/health",
        "openapi": "https://sigtap-outreach-api.sigtap.workers.dev/openapi.json",
        "serverCard": "https://sigtap-mcp.sigtap.workers.dev/.well-known/mcp/server-card.json"
      },
      "payment": {
        "asset": "USDC",
        "scheme": "x402",
        "network": "eip155:8453",
        "priceRange": "$0.001-$0.01 per call",
        "facilitator": "PayAI"
      },
      "description": "13 paid x402 tools, USDC/Base. Free check: GET /preview<path>=200 sample. Copy-paste pay: /llms.txt"
    }
  },
  "title": "sigtap Agent Tools",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://sigtap-mcp.sigtap.workers.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.2",
  "repository": {
    "url": "https://github.com/unnamedaiagent/sigtap-agent-tools",
    "source": "github"
  },
  "websiteUrl": "https://sigtap-outreach-api.sigtap.workers.dev/",
  "description": "13 paid x402 tools, USDC/Base. Free check: GET /preview<path>=200 sample. Copy-paste pay: /llms.txt"
}