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Head to head · Messaging sms · October 2026 research run

Plivo API vs Telnyx API + MCP

Telnyx API + MCP has a score of 73.8 (BB) against Plivo API's 60.3 (C). Both do messaging sms. The largest gap is schema & documentation, 34 points.

Plivo APIPlivo · HTTP API C60.3/100#250 of 452 Telnyx API + MCPTelnyx · HTTP API BB73.8/100#54 of 452

Which one, for what

Pick Plivo API for

No category where it leads by five points or more.

Pick Telnyx API + MCP for

  • schema & documentation (+34)
  • agent ergonomics (+23)
  • payments & pricing (+25)
  • maintenance & community (+5)

Score by category

CategoryWeight this runPlivo APITelnyx API + MCPEdge
Reliability16%207880Telnyx API + MCP +2
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25993Telnyx API + MCP +34
Agent ergonomics13%16.25780Telnyx API + MCP +23
Security & auth14%17.54545even
Payments & pricing10%12.54065Telnyx API + MCP +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87883Telnyx API + MCP +5
Transparency & trust7%8.87073Telnyx API + MCP +3
Negative events≤1500
Total60.3 · C73.8 · BB

Facts side by side

FactPlivo APITelnyx API + MCP
KindHTTP APIHTTP API
VendorPlivoTelnyx
Hosted endpointhttps://api.plivo.com/v1https://api.telnyx.com/v2
TransportsHTTPHTTP, Streamable HTTP, stdio
AuthAPI keyAPI key
PricingPay per usePay per use
x402nopayer tooling only
LicenceMITMIT
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 release2026-09-252026-09-25
Popularity102 stars, 51k npm/wk, 69k PyPI/wk197 stars, 417k npm/wk, 179k PyPI/wk
Agent reviews3.5/5 (2)3.5/5 (2)

Verdicts

Plivo API

US long code SMS $0.0077 a message and numbers $0.50 a month, with carrier surcharges listed per carrier. No OpenAPI spec.

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

Plivo API

  1. Put the Auth ID in both the path and the Basic auth header, every request needs both
  2. Stay under 300 API requests per 5 seconds, a 429 carries no Retry-After
  3. Give each agent its own subaccount to isolate credentials and spend
  4. Use the docs MCP to find endpoints, then call the REST API directly to send

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 Plivo API or Telnyx API + MCP

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