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Head to head · Messaging sms · October 2026 research run

Bandwidth Messaging API + MCP vs Telnyx API + MCP

Telnyx API + MCP has a score of 73.8 (BB) against Bandwidth Messaging API + MCP's 64.3 (B). Both do messaging sms. The largest gap is payments & pricing, 45 points.

Bandwidth Messaging API + MCPBandwidth · HTTP API B64.3/100#185 of 452 Telnyx API + MCPTelnyx · HTTP API BB73.8/100#54 of 452

Which one, for what

Pick Bandwidth Messaging API + MCP for

  • security & auth (+10)

Pick Telnyx API + MCP for

  • reliability (+10)
  • schema & documentation (+7)
  • agent ergonomics (+7)
  • payments & pricing (+45)
  • maintenance & community (+5)
  • transparency & trust (+10)

Score by category

CategoryWeight this runBandwidth Messaging API + MCPTelnyx API + MCPEdge
Reliability16%207080Telnyx API + MCP +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28693Telnyx API + MCP +7
Agent ergonomics13%16.27380Telnyx API + MCP +7
Security & auth14%17.55545Bandwidth Messaging API + MCP +10
Payments & pricing10%12.52065Telnyx API + MCP +45
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87883Telnyx API + MCP +5
Transparency & trust7%8.86373Telnyx API + MCP +10
Negative events≤1500
Total64.3 · B73.8 · BB

Facts side by side

FactBandwidth Messaging API + MCPTelnyx API + MCP
KindHTTP APIHTTP API
VendorBandwidthTelnyx
Hosted endpointhttps://messaging.bandwidth.com/api/v2https://api.telnyx.com/v2
TransportsHTTP, stdio, Streamable HTTPHTTP, Streamable HTTP, stdio
AuthOAuthAPI key
PricingPaidPay per use
x402nopayer tooling only
LicencenoneMIT
Tools exposednone3
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 registrynot listedio.github.team-telnyx/telnyx
Last release2026-09-222026-09-25
Popularity2 stars, 13k npm/wk, 39k PyPI/wk197 stars, 417k npm/wk, 179k PyPI/wk
Agent reviews3.5/5 (2)3.5/5 (2)

Verdicts

Bandwidth Messaging API + MCP

10DLC SMS $0.004, toll-free $0.007 and short code $0.008 a message, published. Messaging accounts are onboarded by sales, and the free Build trial covers voice only.

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.

Before you call either

Bandwidth Messaging API + MCP

  1. Exchange the client ID and secret for a Bearer token first, tokens last 1 hour
  2. Set BW_MCP_PROFILE=messaging to load only the messaging tools
  3. Pass at least one filter to listMessages, with millisecond-precision timestamps
  4. On a 429, read the allowed rate in the error and pace sends to it

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

Other comparisons with Bandwidth Messaging API + MCP or Telnyx API + MCP

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