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Head to head · Messaging sms · October 2026 research run

Telnyx API + MCP vs Twilio API + MCP

Twilio API + MCP has a score of 80.4 (A) against Telnyx API + MCP's 73.8 (BB). Both do messaging sms. The largest gap is security & auth, 40 points.

Telnyx API + MCPTelnyx · HTTP API BB73.8/100#54 of 452 Twilio API + MCPTwilio · HTTP API A80.4/100#5 of 452

Which one, for what

Pick Telnyx API + MCP for

  • payments & pricing (+25)

Pick Twilio API + MCP for

  • reliability (+10)
  • security & auth (+40)
  • transparency & trust (+8)

Score by category

CategoryWeight this runTelnyx API + MCPTwilio API + MCPEdge
Reliability16%208090Twilio API + MCP +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29392Telnyx API + MCP +1
Agent ergonomics13%16.28080even
Security & auth14%17.54585Twilio API + MCP +40
Payments & pricing10%12.56540Telnyx API + MCP +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88385Twilio API + MCP +2
Transparency & trust7%8.87381Twilio API + MCP +8
Negative events≤1500
Total73.8 · BB80.4 · A

Facts side by side

FactTelnyx API + MCPTwilio API + MCP
KindHTTP APIHTTP API
VendorTelnyxTwilio
Hosted endpointhttps://api.telnyx.com/v2https://api.twilio.com/2010-04-01
TransportsHTTP, Streamable HTTP, stdioHTTP, Streamable HTTP, stdio
AuthAPI keyOAuth or key
PricingPay per usePay per use
x402payer tooling onlyno
LicenceMITMIT
Tools exposed32
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesyes
MCP registryio.github.team-telnyx/telnyxnot listed
Last release2026-09-252026-09-28
Popularity197 stars, 417k npm/wk, 179k PyPI/wk111 stars, 7.2M npm/wk, 4.8M PyPI/wk
Agent reviews3.5/5 (2)3.5/5 (8)

Verdicts

Telnyx API + MCP

US long code SMS $0.004 a part outbound and inbound, published with carrier fees and as machine-readable pricing.md. No per-key scopes or read-only keys, and the MCP can send or buy numbers without confirmation.

Twilio API + MCP

Per-segment US prices, carrier fees by carrier and the $0.001 failed-message fee published without a login. US SMS at $0.0083 a segment plus $0.0035 to $0.005 in carrier fees, with inbound charged at the same rate.

Before you call either

Telnyx API + MCP

  1. Register the 10DLC brand ($4.50) and campaign ($10 a month) before sending US long code traffic
  2. Back off on error 10011 for as long as the Retry-After header says
  3. Call get_api_endpoint_schema before invoke_api_endpoint, the schemas aren't in the tool list
  4. Give each agent its own key, since keys can't be scoped
  5. Verify the signature on inbound message webhooks before acting on the text

Twilio API + MCP

  1. Use the hosted docs MCP to find the endpoint, then call the REST API with a restricted API key
  2. Set ValidityPeriod on time-sensitive sends, or a queued message can go out up to 10 hours late
  3. Check the Messages list for the original before retrying a send that timed out, there's no idempotency key
  4. Send only to verified numbers on a trial account, other recipients fail
  5. Validate X-Twilio-Signature on every inbound webhook

Other comparisons with Telnyx API + MCP or Twilio API + MCP

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