Daniel McGrattan

Work · 2025 to now

What I built

For each project: what I built myself, what was hard, what I learned, and what came of it.

  1. 01

    Provena

    A company run by AI agents. They find the buyers, check the data, write to them, answer the replies and book the meetings for B2B companies. I build the agents and hold the decisions.    Company · paid workDec 2025 – now
  2. 02

    Cold email engine

    The machine that turns a client's market into sending campaigns: pull the audience, verify every address, split it into cells, write the copy, size the inboxes, and load it all paused for a person to launch.    Software · infrastructure2026
  3. 03

    Lead warehouse

    A warehouse of 4,203,138 companies, 95.93% classified by niche for $27.93, so a new client can pull the exact companies in their market.    Software · data engineeringJul 2026
  4. 04

    Email verification engine

    An in-house SMTP verifier on a server I run, so we stop paying per check and stop trusting verdicts we can't explain.    Software · infrastructureAug – Sep 2026
  5. 05

    AI reply agent

    An agent that reads a prospect's reply, decides what they meant, drafts an answer in the client's voice, grades it, and either sends or holds it for a person.    Software · AISep 2026
  6. 06

    Public API and MCP server

    A public API of 165 routes and an MCP server of 108 tools, so AI agents can run client fulfilment end to end.    Software · platformSep 2026
  7. 07

    This site, as an API

    Every page here is also a REST API and an MCP server, generated from the same proof ledger, so an agent can read me the way a person does.    Software · platformSep 2026
  8. 08

    How I sell

    A founder-led sales process where the buyer watches before they talk and the proposal is built from their own words.    Paid work · sales2025 – now
  9. 09

    Financial OS

    The company's books as one ledger that reconciles exactly to the bank, with a P&L per client built on top.    Company operationsSep 2026
  10. 10

    STRIAQ

    Research and an MVP scope for AI agents in mineral exploration: ingest decades of drilling data, build a geological memory per project, and rank the next targets.    Research · productJul 2026
  11. 11

    Accord Performance

    My first agency: cold email for other businesses. It is where I learned to write to strangers and where the first code went.    First companyJun 2025

The stack

Build

  • TypeScript + Reactthe CRM and every client page
  • Next.js + Vercelthis site, its API and MCP server
  • Supabase (Postgres + edge functions)the CRM's database and backend
  • Node + Pythondata pipelines, classification, research

Data

  • A self-managed VPSthe warehouse, crawlers and the email verifier
  • Postgres4.2M companies and a person index
  • Prospeo, Apify, Google Placessourcing people and companies

Outbound

  • PlusVibesending the campaign cells
  • AimfoxLinkedIn for clients (not for me, see above)
  • Cloudflare + Spaceshipsending domains and DNS
  • Cal.combooking, including on this site

AI

  • Claude Code + Codexthe coding agents, in parallel rounds
  • Claude + OpenAI modelsthe reply agent and classification
  • MCPletting agents run fulfilment through our API

Timeline

  1. GitHub account created; first repos for Accord Performance, a cold email agency[12] Sourcegh repo list (accord, accord-performance, accordperformance1)As of2025-06-21StatusVerifiedAll sources →
  2. First commit of the Provena CRM (provena-ai)[13] Sourcegit log --reverse provena-aiAs of2025-12-18StatusVerifiedAll sources →
  3. First revenue into the Provena bank account[14] SourceFinancial OS transactions.csvAs of2026-01-17StatusVerifiedAll sources →
  4. 4.2M-company warehouse 95.93% classified for $27.93[15] Sourceengineering notes (company classification universe)As of2026-07-26StatusVerifiedAll sources →
  5. STRIAQ (AI agents for mineral exploration) research + MVP package[16] SourceDownloads/striaq_mvpAs of2026-07-27StatusVerifiedAll sources →
  6. Public API + MCP server for agents shipped[18] Sourceengineering notes (agent api round)As of2026-09-16StatusVerifiedAll sources →
  7. AI reply agent auto-sending live for two automotive clients[19] Sourceengineering ledger, reply agent go-live 2026-09-21As of2026-09-21StatusVerifiedAll sources →