[DEPRECATED] This project was rebranded and superseded by sigtap-agent-tools (live endpoints: https://sigtap-outreach-api.sigtap.workers.dev , https://sigtap-mcp.sigtap.workers.dev/mcp ). The legacy *.pitchpilot-agents.workers.dev workers are retired. This repo is kept read-only for history.

sigtap Agent Tools

12 paid micro-tools for AI agents over x402 (HTTP 402, USDC on Base mainnet) plus a runnable MCP server. Pay per call ($0.001-$0.01), no signup, no API keys - the signed payment IS the credential.

HTTP API: https://sigtap-outreach-api.sigtap.workers.dev
MCP (Streamable HTTP): https://sigtap-mcp.sigtap.workers.dev/mcp (13 tools)
Facilitator: PayAI (eip155:8453, asset USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913)
Kit tier (humans): https://unnamedaiagent.github.io/sigtap-kit/ - AI Outreach Kit, $19, crypto (BTC/ETH/USDT), instant email delivery - free sampler PDF (no email needed)
Sibling origin - sigtap Agent Tools (same 12-tool catalog, second deployment): HTTP https://sigtap-outreach-api.sigtap.workers.dev - MCP https://sigtap-mcp.sigtap.workers.dev/mcp - paid x402 calls settle over MCP end-to-end (verified on-chain). Free catalog: GET / on either origin. Listed on 402index (21 records), x402scan (15 resources), Official MCP Registry (io.github.unnamedaiagent/sigtap-agent-tools) and Smithery. Repo: unnamedaiagent/sigtap-agent-tools

Free touch (no wallet needed)

Route	What it returns
`GET /`	Free catalog: every tool with price, params, live URL
`GET /score-preview?subject=...`	Subject-line-only preview of the email grader
`GET /hash-preview?text=...`	sha256 + crc32 of the first 1000 chars
`GET /openapi.json`	Full OpenAPI with `x-payment-info` prices
`GET /llms.txt`	Agent-readable endpoint digest

Paid endpoints (price live-verified from `/openapi.json`)

Outreach intelligence (the money tools):

Endpoint	Price	Output
`GET /deliverability?domain=`	$0.003	SPF/DKIM/DMARC audit for a sending domain
`GET /grade?to=&subject=&body=`	$0.005	12-point cold-email score with concrete fixes
`GET /template?...`	$0.010	Personalized cold email from proven templates

Micro-tools ($0.001-$0.003):

Endpoint	Price	Output
`GET /tools/crypto-price?from=BTC&to=USD`	$0.002	Coinbase spot/buy/sell + spread %
`GET /tools/domain-age?domain=`	$0.003	Registration date, age, registrar (RDAP)
`GET /tools/hash?text=`	$0.001	SHA-256/384/512, hex, base64(url), CRC32
`GET /tools/json?data=`	$0.001	Flatten to dot paths / rows to CSV
`GET /tools/jwt-decode?token=`	$0.001	JWT header+payload with safety flags
`GET /tools/regex?pattern=&text=`	$0.001	Matches, groups, count, ReDoS-risk heuristic
`GET /tools/slug?text=`	$0.001	Unicode-safe slug (incl. Cyrillic translit)
`GET /tools/uuid?type=&count=`	$0.001	UUIDv4/v7, ULID, nanoid - batched
`GET /tools/weather?lat=&lon=`	$0.001	Current + next-3h temps (open-meteo)

x402 payment flow (one round-trip)

GET /tools/hash?text=hello without payment -> HTTP 402 with a PAYMENT-REQUIRED header (base64 JSON: resource, amount in USDC units, network eip155:8453, payTo, 300s timeout).
Any x402-aware client signs the exact USDC transfer and retries with an X-PAYMENT header.
200 + result. First settled call also activates the listing on the PayAI facilitator's Bazaar discovery catalog.

Heads-up: the API is behind Cloudflare. Python's default Python-urllib User-Agent is blocked (403 error 1010). Any real UA works (requests, httpx, curl, axios pass as-is). Details in SKILL.md.

MCP server

Hosted: https://sigtap-mcp.sigtap.workers.dev/mcp - Streamable HTTP, 13 tools, x402 v2 payment settled in-band. Health: /health, card: /.well-known/mcp/server-card.json.
This repo (mcp_server.py, Dockerfile): zero-dependency stdio server, Python 3 stdlib only. catalog, score_preview, hash_preview are free; paid tools proxy the live API and surface the real 402 block until settled. See SERVER.md. Registered in the Official MCP Registry as io.github.unnamedaiagent/sigtap-agent-tools.

If your client's x402 middleware does not settle on this server's paid tools, use the sibling sigtap origin above - MCP settlement there is verified working.

Agent integration

Skill for Claude Code / any SKILL.md-aware agent: see SKILL.md (indexed on skills.sh).
Claude Desktop / MCP clients: hosted URL above, or docker stdio: docker run -i --rm sigtap-agent-tools.

Health: GET /health. Pricing may be adjusted upward; /openapi.json is always live.