Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24

Closed
#39
Closed
Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
#39

Description

@AndresL230
AndresL230
opened on May 13, 2026

Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment

Severity: Low
Affected repos:middleware-node, middleware-python
Component boundary: middleware provider registry

Symptom

Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:

  • SMS: 0.79¢ per request
  • Voice: 1.3¢ per request

No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.

Evidence

  • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
  • middleware-python/recost/_provider_registry.py — same numbers.

Impact

  • Cost estimates drift from Twilio's actual pricing over time.
  • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.

Fix recommendation

Two-part:

  1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
  2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.

Until (2) is in place, at least do (1).

Verification

  • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.

Related

Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.

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      Skip to content
      Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24
      Closed
      #39
      Closed
      Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
      #39
      Description
      @AndresL230
      AndresL230
      opened on May 13, 2026
      Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment
      Severity: Low
      Affected repos:middleware-node, middleware-python
      Component boundary: middleware provider registry
      Symptom
      Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:
      • SMS: 0.79¢ per request
      • Voice: 1.3¢ per request
      No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.
      Evidence
      • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
      • middleware-python/recost/_provider_registry.py — same numbers.
      Impact
      • Cost estimates drift from Twilio's actual pricing over time.
      • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.
      Fix recommendation
      Two-part:
      1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
      2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.
      Until (2) is in place, at least do (1).
      Verification
      • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.
      Related
      Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.
      Metadata
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          Skip to content
          Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24
          Closed
          #39
          Closed
          Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
          #39
          Description
          @AndresL230
          AndresL230
          opened on May 13, 2026
          Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment
          Severity: Low
          Affected repos:middleware-node, middleware-python
          Component boundary: middleware provider registry
          Symptom
          Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:
          • SMS: 0.79¢ per request
          • Voice: 1.3¢ per request
          No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.
          Evidence
          • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
          • middleware-python/recost/_provider_registry.py — same numbers.
          Impact
          • Cost estimates drift from Twilio's actual pricing over time.
          • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.
          Fix recommendation
          Two-part:
          1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
          2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.
          Until (2) is in place, at least do (1).
          Verification
          • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.
          Related
          Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24
              Closed
              #39
              Closed
              Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
              #39
              Description
              @AndresL230
              AndresL230
              opened on May 13, 2026
              Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment
              Severity: Low
              Affected repos:middleware-node, middleware-python
              Component boundary: middleware provider registry
              Symptom
              Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:
              • SMS: 0.79¢ per request
              • Voice: 1.3¢ per request
              No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.
              Evidence
              • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
              • middleware-python/recost/_provider_registry.py — same numbers.
              Impact
              • Cost estimates drift from Twilio's actual pricing over time.
              • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.
              Fix recommendation
              Two-part:
              1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
              2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.
              Until (2) is in place, at least do (1).
              Verification
              • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.
              Related
              Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.
              Metadata
              Metadata
              Assignees
              No one assigned
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                No labels
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                No type
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                No projects
                  Milestone
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var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24
                  Closed
                  #39
                  Closed
                  Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
                  #39
                  Description
                  @AndresL230
                  AndresL230
                  opened on May 13, 2026
                  Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment
                  Severity: Low
                  Affected repos:middleware-node, middleware-python
                  Component boundary: middleware provider registry
                  Symptom
                  Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:
                  • SMS: 0.79¢ per request
                  • Voice: 1.3¢ per request
                  No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.
                  Evidence
                  • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
                  • middleware-python/recost/_provider_registry.py — same numbers.
                  Impact
                  • Cost estimates drift from Twilio's actual pricing over time.
                  • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.
                  Fix recommendation
                  Two-part:
                  1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
                  2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.
                  Until (2) is in place, at least do (1).
                  Verification
                  • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.
                  Related
                  Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24
                      Closed
                      #39
                      Closed
                      Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
                      #39
                      Description
                      @AndresL230
                      AndresL230
                      opened on May 13, 2026
                      Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment
                      Severity: Low
                      Affected repos:middleware-node, middleware-python
                      Component boundary: middleware provider registry
                      Symptom
                      Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:
                      • SMS: 0.79¢ per request
                      • Voice: 1.3¢ per request
                      No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.
                      Evidence
                      • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
                      • middleware-python/recost/_provider_registry.py — same numbers.
                      Impact
                      • Cost estimates drift from Twilio's actual pricing over time.
                      • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.
                      Fix recommendation
                      Two-part:
                      1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
                      2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.
                      Until (2) is in place, at least do (1).
                      Verification
                      • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.
                      Related
                      Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
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                        No labels
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                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
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                          No branches or pull requests
                          Issue actions
                          
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24
                          Closed
                          #39
                          Closed
                          Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
                          #39
                          Description
                          @AndresL230
                          AndresL230
                          opened on May 13, 2026
                          Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment
                          Severity: Low
                          Affected repos:middleware-node, middleware-python
                          Component boundary: middleware provider registry
                          Symptom
                          Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:
                          • SMS: 0.79¢ per request
                          • Voice: 1.3¢ per request
                          No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.
                          Evidence
                          • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
                          • middleware-python/recost/_provider_registry.py — same numbers.
                          Impact
                          • Cost estimates drift from Twilio's actual pricing over time.
                          • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.
                          Fix recommendation
                          Two-part:
                          1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
                          2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.
                          Until (2) is in place, at least do (1).
                          Verification
                          • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.
                          Related
                          Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
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                              Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment #24
                              Closed
                              #39
                              Closed
                              Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment#24
                              #39
                              Description
                              @AndresL230
                              AndresL230
                              opened on May 13, 2026
                              Twilio pricing constants (0.79¢, 1.3¢) have no source-of-truth comment
                              Severity: Low
                              Affected repos:middleware-node, middleware-python
                              Component boundary: middleware provider registry
                              Symptom
                              Both SDKs hard-code Twilio pricing in provider-registry.ts / _provider_registry.py:
                              • SMS: 0.79¢ per request
                              • Voice: 1.3¢ per request
                              No comment explains the source or date. Twilio pricing has changed over the years; nobody knows when these numbers were last reviewed. If they're outdated, the SDK reports stale cost estimates for every Twilio user.
                              Evidence
                              • middleware-node/src/core/provider-registry.ts — Twilio rules with magic numbers.
                              • middleware-python/recost/_provider_registry.py — same numbers.
                              Impact
                              • Cost estimates drift from Twilio's actual pricing over time.
                              • Same concern applies to other hard-coded fingerprint values for OpenAI, Anthropic, Stripe, etc.
                              Fix recommendation
                              Two-part:
                              1. Document the source and date at each price constant: // Twilio SMS $0.0079/msg as of https://www.twilio.com/sms/pricing, last reviewed 2026-05-01.
                              2. Replace with a sync to GET /pricing — same feed the extension uses (high/05). The SDKs can sync provider pricing once at init and cache it. Then there's one place to update prices, not five.
                              Until (2) is in place, at least do (1).
                              Verification
                              • Grep for cost-per-request numbers in both registries returns zero hits without a corresponding // source: ... as of YYYY-MM-DD comment.
                              Related
                              Parity with recost-dev/middleware-node#21. Whatever long-term fix lands (sync from /pricing) should be applied symmetrically.
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