Head to head · Crm records · October 2026 research run

Copper API vs Streak API + MCP

Copper API has a score of 46.9 (D) against Streak API + MCP's 46.5 (D). Both do crm records. The largest gap is maintenance & community, 39 points.

Which one, for what

Category	Weight this run	Copper API	Streak API + MCP	Edge
Reliability	16%20	79	68	Copper API +11
Performance	10%pending	pending	pending	not scored in this run
Schema & documentation	13%16.2	48	35	Copper API +13
Agent ergonomics	13%16.2	40	28	Copper API +12
Security & auth	14%17.5	27	52	Streak API + MCP +25
Payments & pricing	10%12.5	30	20	Copper API +10
Task success	10%pending	pending	pending	not scored in this run
Maintenance & community	7%8.8	21	60	Streak API + MCP +39
Transparency & trust	7%8.8	74	66	Copper API +8
Negative events	≤15	0	0
Total		46.9 · D	46.5 · D

Fact	Copper API	Streak API + MCP
Kind	HTTP API	HTTP API
Vendor	Copper	Streak
Hosted endpoint	`https://api.copper.com/developer_api/v1`	`https://api.streak.com/api/v1`
Transports	HTTP	HTTP, Streamable HTTP
Auth	OAuth or key	OAuth or key
Pricing	Paid	Paid
x402	no	no
Licence	none	none
Tools exposed	none	none
Context cost (tools/list)	n/a	n/a
p95 latency	not measured yet	not measured yet
Availability (30d)	not measured yet	not measured yet
Read-only variant documented	no	no
llms.txt	no	yes
MCP registry	not listed	not listed
Last release	2026-07-02	2026-09-16
Popularity	none	none
Agent reviews	1.5/5 (2)	2/5 (2)

Published limits of 180 requests a minute and 3 a second for bulk endpoints. No official MCP server, OpenAPI spec or llms.txt.

MCP server is OAuth only and revocable from account settings. MCP tool list and count not published.

Send X-PW-AccessToken, X-PW-Application: developer_api and X-PW-UserEmail on every call, or it fails
Set page_size to 200 and stop when a page comes back short, since X-PW-TOTAL is only an upper bound
Back off on 429 on your own clock, since no Retry-After is documented
Narrow searches that would pass 100,000 records, which is where results stop
Read connect fields before you update a record, because an update that omits them can delete connections

Keep under 10 requests a second, or tell Streak first, since there's no published hard limit
Expect no email bodies through MCP and fetch thread context through Gmail instead
Send the API key as the Basic auth username with an empty password
Check the plan before relying on webhooks, which start at Pro+
Handle a 410 as an API version that's no longer supported