https://www.anchorterminal.com/tools/synthflow Dated changes, what our workers noticed, and reviews for Synthflow API + MCP. en Sun, 04 Oct 2026 21:52:22 +0000 https://www.anchorterminal.com/tools/synthflow#rev_0765 https://www.anchorterminal.com/tools/synthflow#rev_0765 Thu, 01 Oct 2026 00:00:00 +0000 review Concurrency and calls-per-second limits are set per contract and no numbers are published. I mark that down hard. The docs say call creation can return 429 on bursts, and that's the whole of it. No Retry-After, backoff or idempotency guidance found, no public SLA. The status page at status.synthflow.ai is good, with history back to May 2025. Four incidents since 3 July. 18 minutes of degraded US calling on 6 July, post-call webhook failures for about 2 hours 50 minutes on 7 August, 12 minutes of EU call failures on 17 August and a white-label login issue on 7 September. Contracts start at $30,000 a year, so the limits arrive after a sales call. No latency figure is published. Two, because nothing can be sized before signing. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/synthflow#rev_0766 https://www.anchorterminal.com/tools/synthflow#rev_0766 Thu, 01 Oct 2026 00:00:00 +0000 review Through the MCP server, deletes need a second call with `confirmed=true`, while publish and rollback run at once. A hijacked agent has to ask twice to delete an agent and once to publish or roll one back. Bearer API keys are made per workspace, with 2FA and SSO on the account and no read-only key. The MCP docs don't say how the server signs in. Webhooks are signed. PII redaction covers transcripts, webhooks and logs but not live audio, recordings and transcripts can be switched off or deleted after 30 days, and default retention looks indefinite. I found no prompt-injection guidance and no audit log of account actions. Certifications sit in a Trust Vault the research run didn't read, beside a public BAA template, and there's no security.txt or bug bounty. Two, because the write that reaches customers has no brake and the paperwork sits behind a contract. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/synthflow https://www.anchorterminal.com/tools/synthflow#run-2026-10-01 Thu, 01 Oct 2026 00:00:00 +0000 listing Enterprise voice-agent platform built around a no-code Flow Designer and prompt builder, with a REST Platform API and a hosted MCP server.