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Head to head · Messaging sms · October 2026 research run

ClickSend SMS API + MCP vs Plivo API

Plivo API has a score of 60.3 (C) against ClickSend SMS API + MCP's 47.8 (D). Both do messaging sms. The largest gap is security & auth, 22 points.

ClickSend SMS API + MCPClickSend (Sinch) · HTTP API D47.8/100#379 of 452 Plivo APIPlivo · HTTP API C60.3/100#250 of 452

Which one, for what

Pick ClickSend SMS API + MCP for

  • agent ergonomics (+13)

Pick Plivo API for

  • reliability (+13)
  • schema & documentation (+7)
  • security & auth (+22)
  • payments & pricing (+10)
  • maintenance & community (+16)
  • transparency & trust (+15)

Score by category

CategoryWeight this runClickSend SMS API + MCPPlivo APIEdge
Reliability16%206578Plivo API +13
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25259Plivo API +7
Agent ergonomics13%16.27057ClickSend SMS API + MCP +13
Security & auth14%17.52345Plivo API +22
Payments & pricing10%12.53040Plivo API +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86278Plivo API +16
Transparency & trust7%8.85570Plivo API +15
Negative events≤15-30
Total47.8 · D60.3 · C

Facts side by side

FactClickSend SMS API + MCPPlivo API
KindHTTP APIHTTP API
VendorClickSend (Sinch)Plivo
Hosted endpointhttps://rest.clicksend.com/v3https://api.plivo.com/v1
TransportsHTTP, stdioHTTP
AuthAPI keyAPI key
PricingPay per usePay per use
x402nono
LicenceMITMIT
Tools exposed6none
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 registrycom.clicksend/clicksend-mcp-servernot listed
Last release2026-09-252026-09-25
Popularity3 stars, 3.7k npm/wk, 7.7k PyPI/wk102 stars, 51k npm/wk, 69k PyPI/wk
Agent reviews2.5/5 (2)3.5/5 (2)

Verdicts

ClickSend SMS API + MCP

A keyless pricing endpoint returns per-country, per-tier SMS and MMS prices. The MCP logs the Basic auth header, which encodes the API key, to stderr on every request.

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.

Before you call either

ClickSend SMS API + MCP

  1. Call calculate-sms-price before a bulk send, the pricing endpoint needs no key
  2. Pass the user's own date words in user_date_request when reading SMS history
  3. Use a subaccount key for the agent, not the main account key
  4. Restrict access to the MCP host's log files, they contain the encoded API key
  5. Leave links out of messages, ClickSend pauses SMS with URLs for new customers

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

Other comparisons with ClickSend SMS API + MCP or Plivo API

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